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Currie T, Brandt GM, Brandt TD, Lacy B, Burrows A, Guyon O, Tamura M, Liu RY, Sagynbayeva S, Tobin T, Chilcote J, Groff T, Marois C, Thompson W, Murphy SJ, Kuzuhara M, Lawson K, Lozi J, Deo V, Vievard S, Skaf N, Uyama T, Jovanovic N, Martinache F, Kasdin NJ, Kudo T, McElwain M, Janson M, Wisniewski J, Hodapp K, Nishikawa J, Hełminiak K, Kwon J, Hayashi M. Direct imaging and astrometric detection of a gas giant planet orbiting an accelerating star. Science 2023; 380:198-203. [PMID: 37053312 DOI: 10.1126/science.abo6192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Direct imaging of gas giant exoplanets provides information on their atmospheres and the architectures of planetary systems. However, few planets have been detected in blind surveys with direct imaging. Using astrometry from the Gaia and Hipparcos spacecraft, we identified dynamical evidence for a gas giant planet around the nearby star HIP 99770. We confirmed the detection of this planet with direct imaging using the Subaru Coronagraphic Extreme Adaptive Optics instrument. The planet, HIP 99770 b, orbits 17 astronomical units from its host star, receiving an amount of light similar to that reaching Jupiter. Its dynamical mass is 13.9 to 16.1 Jupiter masses. The planet-to-star mass ratio [(7 to 8) × 10-3] is similar to that of other directly imaged planets. The planet's atmospheric spectrum indicates an older, less cloudy analog of the previously imaged exoplanets around HR 8799.
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Affiliation(s)
- Thayne Currie
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
- University of Texas-San Antonio, San Antonio, TX 78006, USA
- Eureka Scientific, Oakland, CA 94602, USA
| | - G Mirek Brandt
- Department of Physics, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Timothy D Brandt
- Department of Physics, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Brianna Lacy
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
- Department of Astronomy, University of Texas-Austin, Austin, TX 78712, USA
| | - Adam Burrows
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
| | - Olivier Guyon
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
- Astrobiology Center, Osawa, Mitaka, Tokyo 181-8588, Japan
- Steward Observatory, The University of Arizona, Tucson, AZ 85721, USA
| | - Motohide Tamura
- Astrobiology Center, Osawa, Mitaka, Tokyo 181-8588, Japan
- National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
- Department of Astronomy, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Ranger Y Liu
- Department of Astronomy, Columbia University, New York, NY 10027, USA
| | - Sabina Sagynbayeva
- Department of Physics and Astronomy, State University of New York-Stony Brook, Stony Brook, NY 11790, USA
| | - Taylor Tobin
- Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jeffrey Chilcote
- Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Tyler Groff
- NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | - Christian Marois
- National Research Council-Herzberg, Victoria, BC V9E 2E7, Canada
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - William Thompson
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Simon J Murphy
- Sydney Institute for Astronomy, School of Physics, University of Sydney, Sydney, Australia
- Centre for Astrophysics, University of Southern Queensland, Toowoomba, QLD 4350, Australia
| | - Masayuki Kuzuhara
- Astrobiology Center, Osawa, Mitaka, Tokyo 181-8588, Japan
- National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
| | - Kellen Lawson
- NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | - Julien Lozi
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
| | - Vincent Deo
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
| | - Sebastien Vievard
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
| | - Nour Skaf
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
| | - Taichi Uyama
- National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
- Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA
| | - Nemanja Jovanovic
- Department of Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
| | - Frantz Martinache
- Universite Cote d'Azur, Observatoire de la Cote d'Azur, Laboratoire Lagrange, Nice 06000, France
| | - N Jeremy Kasdin
- Department of Mechanical Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Tomoyuki Kudo
- Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720, USA
| | | | - Markus Janson
- Department of Astronomy, Stockholm University, Stockholm 114 19, Sweden
| | - John Wisniewski
- Department of Physics and Astronomy, George Mason University, Fairfax, VA 22030, USA
| | - Klaus Hodapp
- Institute for Astronomy, University of Hawai'i, Hilo, HI 96720, USA
| | - Jun Nishikawa
- National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
- Department of Astronomy, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Krzysztof Hełminiak
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Torun 87-100, Poland
| | - Jungmi Kwon
- Department of Astronomy, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Masahiko Hayashi
- National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
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Abstract
Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968. This review traces the binary stars observed and the scientific results obtained from the early days of ultraviolet missions (OAO-2, Voyager, ANS, IUE), through a period of diversification (Hipparcos, WIRE, MOST, BRITE), to the current era of large planetary transit surveys (CoRoT, Kepler, TESS). In this time observations have been obtained of detached, semi-detached and contact binaries containing dwarfs, sub-giants, giants, supergiants, white dwarfs, planets, neutron stars and accretion discs. Recent missions have found a huge variety of objects such as pulsating stars in eclipsing binaries, multi-eclipsers, heartbeat stars and binaries hosting transiting planets. Particular attention is paid to eclipsing binaries, because they are staggeringly useful, and to the NASA Transiting Exoplanet Survey Satellite (TESS) because its huge sky coverage enables a wide range of scientific investigations with unprecedented ease. These results are placed into context, future missions are discussed, and a list of important science goals is presented.
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