1
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Shappee BJ, Simon JD, Drout MR, Piro AL, Morrell N, Prieto JL, Kasen D, Holoien TWS, Kollmeier JA, Kelson DD, Coulter DA, Foley RJ, Kilpatrick CD, Siebert MR, Madore BF, Murguia-Berthier A, Pan YC, Prochaska JX, Ramirez-Ruiz E, Rest A, Adams C, Alatalo K, Bañados E, Baughman J, Bernstein RA, Bitsakis T, Boutsia K, Bravo JR, Di Mille F, Higgs CR, Ji AP, Maravelias G, Marshall JL, Placco VM, Prieto G, Wan Z. Early spectra of the gravitational wave source GW170817: Evolution of a neutron star merger. Science 2017; 358:1574-1578. [PMID: 29038374 DOI: 10.1126/science.aaq0186] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/11/2017] [Indexed: 11/02/2022]
Abstract
On 17 August 2017, Swope Supernova Survey 2017a (SSS17a) was discovered as the optical counterpart of the binary neutron star gravitational wave event GW170817. We report time-series spectroscopy of SSS17a from 11.75 hours until 8.5 days after the merger. Over the first hour of observations, the ejecta rapidly expanded and cooled. Applying blackbody fits to the spectra, we measured the photosphere cooling from [Formula: see text] to [Formula: see text] kelvin, and determined a photospheric velocity of roughly 30% of the speed of light. The spectra of SSS17a began displaying broad features after 1.46 days and evolved qualitatively over each subsequent day, with distinct blue (early-time) and red (late-time) components. The late-time component is consistent with theoretical models of r-process-enriched neutron star ejecta, whereas the blue component requires high-velocity, lanthanide-free material.
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Affiliation(s)
- B J Shappee
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA. .,Institute for Astronomy, University of Hawai'i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - J D Simon
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - M R Drout
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - A L Piro
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - N Morrell
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - J L Prieto
- Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Avenida Ejército 441, Santiago, Chile.,Millennium Institute of Astrophysics, Santiago, Chile
| | - D Kasen
- Departments of Physics and Astronomy, 366 LeConte Hall, University of California---Berkeley, Berkeley, CA 94720, USA.,Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - T W-S Holoien
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - J A Kollmeier
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - D D Kelson
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - D A Coulter
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - R J Foley
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - C D Kilpatrick
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - M R Siebert
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - B F Madore
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - A Murguia-Berthier
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - Y-C Pan
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - J X Prochaska
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA
| | - E Ramirez-Ruiz
- Department of Astronomy and Astrophysics, University of California-Santa Cruz, Santa Cruz, CA 95064, USA.,Dark Cosmology Center, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark
| | - A Rest
- Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA.,Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - C Adams
- Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
| | - K Alatalo
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
| | - E Bañados
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - J Baughman
- Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Avenida Ejército 441, Santiago, Chile.,Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - R A Bernstein
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - T Bitsakis
- Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, C.P. 58190, Morelia, Mexico
| | - K Boutsia
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - J R Bravo
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - F Di Mille
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - C R Higgs
- University of Victoria, Victoria, BC V8P 5C2, Canada.,National Research Council (NRC) Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
| | - A P Ji
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - G Maravelias
- Instituto de Física y Astronomía, Universidad de Valparaíso, Valparaíso, Chile
| | - J L Marshall
- George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
| | - V M Placco
- Department of Physics and Joint Institute for Nuclear Astrophysics (JINA) Center for the Evolution of the Elements, University of Notre Dame, Notre Dame, IN 46556, USA
| | - G Prieto
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - Z Wan
- Sydney Institute for Astronomy, School of Physics, A28, University of Sydney, NSW 2006, Australia
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2
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Drout MR, Piro AL, Shappee BJ, Kilpatrick CD, Simon JD, Contreras C, Coulter DA, Foley RJ, Siebert MR, Morrell N, Boutsia K, Di Mille F, Holoien TWS, Kasen D, Kollmeier JA, Madore BF, Monson AJ, Murguia-Berthier A, Pan YC, Prochaska JX, Ramirez-Ruiz E, Rest A, Adams C, Alatalo K, Bañados E, Baughman J, Beers TC, Bernstein RA, Bitsakis T, Campillay A, Hansen TT, Higgs CR, Ji AP, Maravelias G, Marshall JL, Bidin CM, Prieto JL, Rasmussen KC, Rojas-Bravo C, Strom AL, Ulloa N, Vargas-González J, Wan Z, Whitten DD. Light curves of the neutron star merger GW170817/SSS17a: Implications for r-process nucleosynthesis. Science 2017; 358:1570-1574. [PMID: 29038375 DOI: 10.1126/science.aaq0049] [Citation(s) in RCA: 384] [Impact Index Per Article: 54.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/11/2017] [Indexed: 11/02/2022]
Abstract
On 17 August 2017, gravitational waves (GWs) were detected from a binary neutron star merger, GW170817, along with a coincident short gamma-ray burst, GRB 170817A. An optical transient source, Swope Supernova Survey 17a (SSS17a), was subsequently identified as the counterpart of this event. We present ultraviolet, optical, and infrared light curves of SSS17a extending from 10.9 hours to 18 days postmerger. We constrain the radioactively powered transient resulting from the ejection of neutron-rich material. The fast rise of the light curves, subsequent decay, and rapid color evolution are consistent with multiple ejecta components of differing lanthanide abundance. The late-time light curve indicates that SSS17a produced at least ~0.05 solar masses of heavy elements, demonstrating that neutron star mergers play a role in rapid neutron capture (r-process) nucleosynthesis in the universe.
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Affiliation(s)
- M R Drout
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.
| | - A L Piro
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - B J Shappee
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Institute for Astronomy, University of Hawai'i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - C D Kilpatrick
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - J D Simon
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - C Contreras
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - D A Coulter
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - R J Foley
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - M R Siebert
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - N Morrell
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - K Boutsia
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - F Di Mille
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - T W-S Holoien
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - D Kasen
- Departments of Physics and Astronomy, 366 LeConte Hall, University of California, Berkeley, CA 94720, USA.,Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - J A Kollmeier
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - B F Madore
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - A J Monson
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA
| | - A Murguia-Berthier
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - Y-C Pan
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - J X Prochaska
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - E Ramirez-Ruiz
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA.,Dark Cosmology Center, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark
| | - A Rest
- Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA.,Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - C Adams
- Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
| | - K Alatalo
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
| | - E Bañados
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - J Baughman
- Massachusetts Institute of Technology, Cambridge, MA, USA.,Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Avenida Ejército 441, Santiago, Chile
| | - T C Beers
- Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA.,Joint Institute for Nuclear Astrophysics, Center for the Evolution of the Elements, East Lansing, MI 48824, USA
| | - R A Bernstein
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - T Bitsakis
- Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, C.P. 58190, Morelia, Mexico
| | - A Campillay
- Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de La Serena, Cisternas 1200, La Serena, Chile
| | - T T Hansen
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - C R Higgs
- University of Victoria, Victoria, British Columbia, Canada.,National Research Council Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, British Columbia V9E 2E7, Canada
| | - A P Ji
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - G Maravelias
- Instituto de Física y Astronomía, Universidad de Valparaíso, Avenida Gran Bretaña 1111, Casilla 5030, Valparaíso, Chile
| | - J L Marshall
- George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
| | - C Moni Bidin
- Instituto de Astronomía, Universidad Católica del Norte, Avenida Angamos 0610, Antofagasta, Chile
| | - J L Prieto
- Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Avenida Ejército 441, Santiago, Chile.,Millennium Institute of Astrophysics, Santiago, Chile
| | - K C Rasmussen
- Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA.,Joint Institute for Nuclear Astrophysics, Center for the Evolution of the Elements, East Lansing, MI 48824, USA
| | - C Rojas-Bravo
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - A L Strom
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - N Ulloa
- Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de La Serena, Cisternas 1200, La Serena, Chile
| | - J Vargas-González
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - Z Wan
- Sydney Institute for Astronomy, School of Physics, A28, University of Sydney, NSW 2006, Australia
| | - D D Whitten
- Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA.,Joint Institute for Nuclear Astrophysics, Center for the Evolution of the Elements, East Lansing, MI 48824, USA
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3
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Coulter DA, Foley RJ, Kilpatrick CD, Drout MR, Piro AL, Shappee BJ, Siebert MR, Simon JD, Ulloa N, Kasen D, Madore BF, Murguia-Berthier A, Pan YC, Prochaska JX, Ramirez-Ruiz E, Rest A, Rojas-Bravo C. Swope Supernova Survey 2017a (SSS17a), the optical counterpart to a gravitational wave source. Science 2017; 358:1556-1558. [PMID: 29038368 DOI: 10.1126/science.aap9811] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 10/10/2017] [Indexed: 11/02/2022]
Abstract
On 17 August 2017, the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Virgo interferometer detected gravitational waves (GWs) emanating from a binary neutron star merger, GW170817. Nearly simultaneously, the Fermi and INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory) telescopes detected a gamma-ray transient, GRB 170817A. At 10.9 hours after the GW trigger, we discovered a transient and fading optical source, Swope Supernova Survey 2017a (SSS17a), coincident with GW170817. SSS17a is located in NGC 4993, an S0 galaxy at a distance of 40 megaparsecs. The precise location of GW170817 provides an opportunity to probe the nature of these cataclysmic events by combining electromagnetic and GW observations.
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Affiliation(s)
- D A Coulter
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA.
| | - R J Foley
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - C D Kilpatrick
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - M R Drout
- Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - A L Piro
- Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - B J Shappee
- Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Institute for Astronomy, University of Hawai'i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - M R Siebert
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - J D Simon
- Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - N Ulloa
- Departamento de Física y Astronomía, Universidad de La Serena, La Serena, Chile
| | - D Kasen
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.,Departments of Physics and Astronomy, University of California, Berkeley, CA 94720, USA
| | - B F Madore
- Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Department of Astronomy and Astrophysics, The University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
| | - A Murguia-Berthier
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - Y-C Pan
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - J X Prochaska
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - E Ramirez-Ruiz
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA.,Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark
| | - A Rest
- Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA.,Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - C Rojas-Bravo
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
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4
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Kilpatrick CD, Foley RJ, Kasen D, Murguia-Berthier A, Ramirez-Ruiz E, Coulter DA, Drout MR, Piro AL, Shappee BJ, Boutsia K, Contreras C, Di Mille F, Madore BF, Morrell N, Pan YC, Prochaska JX, Rest A, Rojas-Bravo C, Siebert MR, Simon JD, Ulloa N. Electromagnetic evidence that SSS17a is the result of a binary neutron star merger. Science 2017; 358:1583-1587. [PMID: 29038369 DOI: 10.1126/science.aaq0073] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/12/2017] [Indexed: 11/02/2022]
Abstract
Eleven hours after the detection of gravitational wave source GW170817 by the Laser Interferometer Gravitational-Wave Observatory and Virgo Interferometers, an associated optical transient, SSS17a, was identified in the galaxy NGC 4993. Although the gravitational wave data indicate that GW170817 is consistent with the merger of two compact objects, the electromagnetic observations provide independent constraints on the nature of that system. We synthesize the optical to near-infrared photometry and spectroscopy of SSS17a collected by the One-Meter Two-Hemisphere collaboration, finding that SSS17a is unlike other known transients. The source is best described by theoretical models of a kilonova consisting of radioactive elements produced by rapid neutron capture (the r-process). We conclude that SSS17a was the result of a binary neutron star merger, reinforcing the gravitational wave result.
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Affiliation(s)
- C D Kilpatrick
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA.
| | - R J Foley
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - D Kasen
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.,Departments of Physics and Astronomy, University of California, Berkeley, CA 94720, USA
| | - A Murguia-Berthier
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - E Ramirez-Ruiz
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA.,DARK, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark
| | - D A Coulter
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - M R Drout
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - A L Piro
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - B J Shappee
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA.,Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - K Boutsia
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - C Contreras
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - F Di Mille
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - B F Madore
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - N Morrell
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - Y-C Pan
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - J X Prochaska
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - A Rest
- Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA.,Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - C Rojas-Bravo
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - M R Siebert
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
| | - J D Simon
- The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - N Ulloa
- Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de La Serena, Cisternas 1200, La Serena, Chile
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5
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Negrello M, Hopwood R, De Zotti G, Cooray A, Verma A, Bock J, Frayer DT, Gurwell MA, Omont A, Neri R, Dannerbauer H, Leeuw LL, Barton E, Cooke J, Kim S, da Cunha E, Rodighiero G, Cox P, Bonfield DG, Jarvis MJ, Serjeant S, Ivison RJ, Dye S, Aretxaga I, Hughes DH, Ibar E, Bertoldi F, Valtchanov I, Eales S, Dunne L, Driver SP, Auld R, Buttiglione S, Cava A, Grady CA, Clements DL, Dariush A, Fritz J, Hill D, Hornbeck JB, Kelvin L, Lagache G, Lopez-Caniego M, Gonzalez-Nuevo J, Maddox S, Pascale E, Pohlen M, Rigby EE, Robotham A, Simpson C, Smith DJB, Temi P, Thompson MA, Woodgate BE, York DG, Aguirre JE, Beelen A, Blain A, Baker AJ, Birkinshaw M, Blundell R, Bradford CM, Burgarella D, Danese L, Dunlop JS, Fleuren S, Glenn J, Harris AI, Kamenetzky J, Lupu RE, Maddalena RJ, Madore BF, Maloney PR, Matsuhara H, Michaowski MJ, Murphy EJ, Naylor BJ, Nguyen H, Popescu C, Rawlings S, Rigopoulou D, Scott D, Scott KS, Seibert M, Smail I, Tuffs RJ, Vieira JD, van der Werf PP, Zmuidzinas J. The Detection of a Population of Submillimeter-Bright, Strongly Lensed Galaxies. Science 2010; 330:800-4. [DOI: 10.1126/science.1193420] [Citation(s) in RCA: 294] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Mattia Negrello
- Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
| | - R. Hopwood
- Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
| | - G. De Zotti
- Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Vicolo Osservatorio 5, I-35122 Padova, Italy
- Scuola Internazionale Superiore di Studi Avanzati, Via Bonomea 265, I-34136 Trieste, Italy
| | - A. Cooray
- Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA
| | - A. Verma
- Oxford Astrophysics, Denys Wilkinson Building, University of Oxford, Keble Road, Oxford OX1 3RH, UK
| | - J. Bock
- Jet Propulsion Laboratory (JPL), Pasadena, CA 91009, USA
- California Institute of Technology, Pasadena, CA 91125, USA
| | - D. T. Frayer
- National Radio Astronomy Observatory, Post Office Box 2, Green Bank, WV 24944, USA
| | - M. A. Gurwell
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
| | - A. Omont
- Institut d’Astrophysique de Paris, Universitte Pierre et Marie Curie and CNRS, 98 bis boulevard Arago, 75014 Paris, France
| | - R. Neri
- Institut de Radioastronomie Millimétrique (IRAM), 300 rue de la piscine, 38406 Saint-Martin d'Hères, France
| | - H. Dannerbauer
- Laboratoire Astrophysique, Instrumentation et Modélisation Paris Sarclay, Commissariat à l’Énergie Atomique (CEA)/Direction des Sciences de la Matière–CNRS–Université Paris Diderot, Institut de Recherche sur les lois fondamentales d l’Universe/Service d’Astrophysique, CEA Saclay, Orme des Merisiers, F-91191 Gif-sur-Yvette Cedex, France
| | - L. L. Leeuw
- Physics Department, University of Johannesburg, Post Office Box 524, Auckland Park 2006, South Africa
- SETI Institute, 515 North Whisman Avenue, Mountain View, CA 94043, USA
| | - E. Barton
- Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA
| | - J. Cooke
- Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA
- California Institute of Technology, Pasadena, CA 91125, USA
| | - S. Kim
- Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA
| | - E. da Cunha
- Department of Physics, University of Crete, 71003 Heraklion, Greece
| | - G. Rodighiero
- Dipartimento di Astronomia, Universitá di Padova, Vicolo Osservatorio 2, I-35122 Padova, Italy
| | - P. Cox
- Institut de Radioastronomie Millimétrique (IRAM), 300 rue de la piscine, 38406 Saint-Martin d'Hères, France
| | - D. G. Bonfield
- Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Herts AL10 9AB, UK
| | - M. J. Jarvis
- Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Herts AL10 9AB, UK
| | - S. Serjeant
- Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
| | - R. J. Ivison
- UK Astronomy Technology Center, Royal Observatory Edinburgh, Edinburgh EH9 3HJ, UK
- Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK
| | - S. Dye
- School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - I. Aretxaga
- Instituto Nacional de Astrofísica, Óptica y Electrónica, Apartado Postal 51 y 216, 72000 Puebla, Mexico
| | - D. H. Hughes
- Instituto Nacional de Astrofísica, Óptica y Electrónica, Apartado Postal 51 y 216, 72000 Puebla, Mexico
| | - E. Ibar
- UK Astronomy Technology Center, Royal Observatory Edinburgh, Edinburgh EH9 3HJ, UK
| | - F. Bertoldi
- Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
| | - I. Valtchanov
- Herschel Science Centre, European Space Astronomy Centre, European Space Agency (ESA), Post Office Box 78, 28691 Villanueva de la Cañada, Madrid, Spain
| | - S. Eales
- School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - L. Dunne
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - S. P. Driver
- Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK
| | - R. Auld
- School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - S. Buttiglione
- Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Vicolo Osservatorio 5, I-35122 Padova, Italy
| | - A. Cava
- Instituto de Astrofísica de Canarias, C/Vía Láctea s/n, E-38200 La Laguna, Spain
- Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38205 La Laguna, Tenerife, Spain
| | - C. A. Grady
- Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602, USA
- Goddard Space Flight Center, Code 667, Greenbelt Road, Greenbelt, MD 20771, USA
| | - D. L. Clements
- Astrophysics Group, Physics Department, Blackett Lab, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - A. Dariush
- School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - J. Fritz
- Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
| | - D. Hill
- Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK
| | - J. B. Hornbeck
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA
| | - L. Kelvin
- Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK
| | - G. Lagache
- Institut d’Astrophysique Spatiale (IAS), Bâtiment 121, F-91405 Orsa, France
- Université Paris–Sud 11 and CNRS (UMR 8617), 91400 Orsay, France
| | - M. Lopez-Caniego
- Instituto de Fisica de Cantabria, Consejo Superior de Investigaciones Científicas–Universidad de Cantabria, Avenue de Los Castros s/n, Santander 39005, Spain
| | - J. Gonzalez-Nuevo
- Scuola Internazionale Superiore di Studi Avanzati, Via Bonomea 265, I-34136 Trieste, Italy
| | - S. Maddox
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - E. Pascale
- School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - M. Pohlen
- School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - E. E. Rigby
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - A. Robotham
- Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK
| | - C. Simpson
- Astrophysics Research Institute, Liverpool John Moores University Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, UK
| | - D. J. B. Smith
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - P. Temi
- Astrophysics Branch, NASA Ames Research Center, Mail Stop 245-6, Moffett Field, CA 94035, USA
| | - M. A. Thompson
- Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Herts AL10 9AB, UK
| | - B. E. Woodgate
- NASA Goddard Space Flight Center, Code 667, Greenbelt Road, Greenbelt, MD 20771, USA
| | - D. G. York
- Department of Astrophysics and The Enrico Fermi Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
| | - J. E. Aguirre
- Department of Physics and Astronomy, University of Pennsylvania, Philadephia, PA 19104, USA
| | - A. Beelen
- Université Paris–Sud 11 and CNRS (UMR 8617), 91400 Orsay, France
| | - A. Blain
- California Institute of Technology, Pasadena, CA 91125, USA
| | - A. J. Baker
- Rutgers University, Department of Physics and Astronomy, 136 Frelinghuysen Road, Piscataway, NJ 08854–8019, USA
| | - M. Birkinshaw
- H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK
| | - R. Blundell
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
| | - C. M. Bradford
- Jet Propulsion Laboratory (JPL), Pasadena, CA 91009, USA
- California Institute of Technology, Pasadena, CA 91125, USA
| | - D. Burgarella
- Laboratoire d’Astrophysique de Marseille, UMR6110 CNRS, and Aix-Marseille Université, 38 rue F. Joliot-Curie, F-13388 Marseille, France
| | - L. Danese
- Scuola Internazionale Superiore di Studi Avanzati, Via Bonomea 265, I-34136 Trieste, Italy
| | - J. S. Dunlop
- UK Astronomy Technology Center, Royal Observatory Edinburgh, Edinburgh EH9 3HJ, UK
| | - S. Fleuren
- School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
| | - J. Glenn
- University of Colorado, Center for Astrophysics and Space Astronomy, 389-UCB, Boulder, CO 80303, USA
| | - A. I. Harris
- Department of Astronomy, University of Maryland, College Park, MD 20742, USA
| | - J. Kamenetzky
- University of Colorado, Center for Astrophysics and Space Astronomy, 389-UCB, Boulder, CO 80303, USA
| | - R. E. Lupu
- Department of Physics and Astronomy, University of Pennsylvania, Philadephia, PA 19104, USA
| | - R. J. Maddalena
- National Radio Astronomy Observatory, Post Office Box 2, Green Bank, WV 24944, USA
| | - B. F. Madore
- Observatories of the Carnegie Institution, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - P. R. Maloney
- University of Colorado, Center for Astrophysics and Space Astronomy, 389-UCB, Boulder, CO 80303, USA
| | - H. Matsuhara
- Institute for Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210, Japan
| | - M. J. Michaowski
- Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK
| | - E. J. Murphy
- Infrared Processing and Analysis Center, Pasadena, CA 91125, USA
| | - B. J. Naylor
- Jet Propulsion Laboratory (JPL), Pasadena, CA 91009, USA
| | - H. Nguyen
- Jet Propulsion Laboratory (JPL), Pasadena, CA 91009, USA
| | - C. Popescu
- Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK
| | - S. Rawlings
- Oxford Astrophysics, Denys Wilkinson Building, University of Oxford, Keble Road, Oxford OX1 3RH, UK
| | - D. Rigopoulou
- Oxford Astrophysics, Denys Wilkinson Building, University of Oxford, Keble Road, Oxford OX1 3RH, UK
- Space Science and Technology Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK
| | - D. Scott
- University of British Columbia, 6224 Agricultural Road, Vancouver BC V6T 1Z1, Canada
| | - K. S. Scott
- Department of Physics and Astronomy, University of Pennsylvania, Philadephia, PA 19104, USA
| | - M. Seibert
- Observatories of the Carnegie Institution, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - I. Smail
- Institute for Computational Cosmology, Durham University, Durham DH1 3LE, UK
| | - R. J. Tuffs
- Max-Planck-Institut f¨r Kernphysik (MPIK), Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - J. D. Vieira
- California Institute of Technology, Pasadena, CA 91125, USA
| | - P. P. van der Werf
- Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK
- Leiden Observatory, Leiden University, Post Office Box 9513, NL-2300 RA Leiden, Netherlands
| | - J. Zmuidzinas
- Jet Propulsion Laboratory (JPL), Pasadena, CA 91009, USA
- California Institute of Technology, Pasadena, CA 91125, USA
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6
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Swaters RA, Madore BF, Trewhella M. High-Resolution Rotation Curves of Low Surface Brightness Galaxies. Astrophys J 2000; 531:L107-L110. [PMID: 10688764 DOI: 10.1086/312540] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
High-resolution Halpha rotation curves are presented for five low surface brightness galaxies. These Halpha rotation curves have shapes different from those previously derived from H i observations, probably because of the higher spatial resolution of the Halpha observations. The Halpha rotation curves rise more steeply in the inner parts than the H i rotation curves, and they reach a flat part beyond about two disk scale lengths. With radii expressed in optical disk scale lengths, the rotation curves of the low surface brightness galaxies presented here and those of the high surface brightness galaxies have almost identical shapes. Mass modeling shows that the contribution of the stellar component to the rotation curves may be scaled to explain most of the inner parts of the rotation curves, albeit with high stellar mass-to-light ratios. On the other hand, well-fitting mass models can also be obtained with lower contributions of the stellar disk. These observations suggest that the luminous mass density and the total mass density are coupled in the inner parts of these galaxies.
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Maoz E, Newman JA, Ferrarese L, Stetson PB, Zepf SE, Davis M, Freedman WL, Madore BF. A distance to the galaxy NGC4258 from observations of Cepheid variable stars. Nature 1999; 401:351-4. [PMID: 16862105 DOI: 10.1038/43838] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/1999] [Accepted: 08/12/1999] [Indexed: 11/08/2022]
Abstract
Cepheid variable stars pulsate in a way that is correlated with their intrinsic luminosity, making them useful as 'standard candles' for determining distances to galaxies; the potential systematic uncertainties in the resulting distances have been estimated to be only 8-10%. They have played a crucial role in establishing the extragalactic distance scale and hence the value of the Hubble constant. Here we report observations of Cepheids in the nearby galaxy NGC4258; the distance calculated from the Cepheids is 8.1 +/- 0.4 Mpc, where the uncertainty does not include possible systematic errors. There is an independently determined geometric distance to this galaxy of 7.2 +/- 0.5 Mpc, based on the observed proper motions of water masers orbiting the central black hole; the distances differ by 1.3sigma. If the maser-based distance is adopted and the Cepheid distance scale revised accordingly, the derived value of the Hubble constant would increase by 12 +/- 9%, while the expansion age of the Universe would decrease by the same amount.
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Affiliation(s)
- E Maoz
- NASA Ames Research Center, MS 245-3, Moffett Field, California 94035-1000, USA.
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8
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Abstract
Morphological features of the two-dimensional Belousov-Zhabotinsky reaction were modeled with an algorithm involving only two simple parameters, one describing the productivity of the reaction on a local scale length and the other characterizing the delay or quiescent time after the localized reaction. Self-organizing wavelike structures, including single-and multiarmed spirals, were most easily generated.
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