Direct imaging and astrometric detection of a gas giant planet orbiting an accelerating star

被引：23

作者：

Currie, Thayne ^{[1
,2
,3
]}

Brandt, Mirek ^{[4
]}

Brandt, Timothy D. ^{[4
]}

Lacy, Brianna ^{[5
,6
]}

Burrows, Adam ^{[5
]}

Guyon, Olivier ^{[1
,7
,8
]}

Tamura, Motohide ^{[7
,9
,10
]}

Liu, Ranger Y. ^{[11
,27
]}

Sagynbayeva, Sabina ^{[12
]}

Tobin, Taylor ^{[13
,28
]}

Chilcote, Jeffrey ^{[13
]}

Groff, Tyler ^{[14
]}

Marois, Christian ^{[15
,16
]}

Thompson, William ^{[16
]}

Murphy, Simon J. ^{[17
,18
]}

Kuzuhara, Masayuki ^{[7
,9
]}

Lawson, Kellen ^{[14
]}

Lozi, Julien ^{[1
]}

Deo, Vincent ^{[1
]}

Vievard, Sebastien ^{[1
]}

Skaf, Nour ^{[1
]}

Uyama, Taichi ^{[9
,19
]}

Jovanovic, Nemanja ^{[20
]}

Martinache, Frantz ^{[21
]}

Kasdin, N. Jeremy ^{[22
]}

Kudo, Tomoyuki ^{[1
]}

McElwain, Michael ^{[14
]}

Janson, Markus ^{[23
]}

Wisniewski, John ^{[24
]}

Hodapp, Klaus ^{[25
]}

Nishikawa, Jun ^{[9
,10
]}

Helminiak, Krzysztof ^{[26
]}

Kwon, Jungmi ^{[10
]}

Hayashi, Masahiko ^{[9
]}

机构：

[1] Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA

[2] Univ Texas San Antonio, San Antonio, TX 78006 USA

[3] Eureka Sci, Oakland, CA 94602 USA

[4] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[5] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[6] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[7] Astrobiol Ctr, Mitaka, Tokyo 1818588, Japan

[8] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[9] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[10] Univ Tokyo, Grad Sch Sci, Dept Astron, Tokyo 1130033, Japan

[11] Columbia Univ, Dept Astron, New York, NY 10027 USA

[12] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11790 USA

[13] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[14] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[15] Natl Res Council Herzberg, Victoria, BC V9E 2Y7, Canada

[16] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 2Y2, Canada

[17] Univ Sydney, Sydney Inst Astron, Sch Phys, Sydney, NSW, Australia

[18] Univ Southern Queensland, Ctr Astrophys, Toowoomba, Qld 4350, Australia

[19] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA

[20] CALTECH, Dept Astron, Pasadena, CA 91125 USA

[21] Univ Cote Azur, Observ Cote Azur, Lab Lagrange, F-06000 Nice, France

[22] Princeton Univ, Dept Mech Engn, Princeton, NJ 08544 USA

[23] Stockholm Univ, Dept Astron, S-11419 Stockholm, Sweden

[24] George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA

[25] Univ Hawaii, Inst Astron, Hilo, HI 96720 USA

[26] Polish Acad Sci, Nicolaus Copernicus Astron Ctr, PL-87100 Torun, Poland

[27] Parsons Sch Design, New York, NY 10011 USA

[28] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

来源：

SCIENCE | 2023年 / 380卷 / 6641期

基金：

加拿大自然科学与工程研究理事会; 澳大利亚研究理事会;

关键词：

VERY-LOW-MASS; MU-M; DYNAMICAL MASSES; BROWN DWARFS; YOUNG; DISCOVERY; SPECTROSCOPY; COMPANIONS; HIPPARCOS; TEMPERATURE;

D O I：

10.1126/science.abo6192

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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) x 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.

引用

页码：198 / 203

页数：5

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