Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1

被引：1008

作者：

Gillon, Michael ^{[1
]}

Triaud, Amaury H. M. J. ^{[2
]}

Demory, Brice-Olivier ^{[3
,4
]}

Jehin, Emmanuel ^{[1
]}

Agol, Eric ^{[5
,6
]}

Deck, Katherine M. ^{[7
]}

Lederer, Susan M. ^{[8
]}

de Wit, Julien ^{[9
]}

Burdanov, Artem ^{[1
]}

Ingalls, James G. ^{[10
]}

Bolmont, Emeline ^{[11
,12
]}

Leconte, Jeremy ^{[13
]}

Raymond, Sean N. ^{[13
]}

Selsis, Franck ^{[13
]}

Turbet, Martin ^{[14
]}

Barkaoui, Khalid ^{[15
]}

Burgasser, Adam ^{[16
]}

Burleigh, Matthew R. ^{[17
]}

Carey, Sean J. ^{[10
]}

Chaushev, Aleksander ^{[17
]}

Copperwheat, Chris M. ^{[18
]}

Delrez, Laetitia ^{[14
]}

Fernandes, Catarina S.

Holdsworth, Daniel L. ^{[19
]}

Kotze, Enrico J. ^{[20
]}

Van Grootel, Valerie

Almleaky, Yaseen ^{[21
,22
]}

Benkhaldoun, Zouhair ^{[15
]}

Magain, Pierre ^{[1
]}

Queloz, Didier ^{[23
]}

机构：

[1] Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee 6 Auot 19C,Bat B5C, B-4000 Liege, Belgium

[2] Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[3] Univ Bern, Ctr Space & Habitabil, Sidlerstr 5, CH-3012 Bern, Switzerland

[4] Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

[5] Univ Washington, Dept Astron, Seattle, WA 98195 USA

[6] NASA, Astrobiol Inst, Virtual Planetary Lab, Seattle, WA 98195 USA

[7] CALTECH, Dept Geol & Planetary Sci, Pasadena, CA 91125 USA

[8] NASA, Johnson Space Ctr, 2101 NASA Pkwy, Houston, TX 77058 USA

[9] MIT, Dept Earth Atmospher & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[10] CALTECH, Spitzer Sci Ctr, 1200 E Calif Blvd,Mail Code 314-6, Pasadena, CA 91125 USA

[11] Univ Namur, Dept Math, NaXys, 8 Rempart La Vierge, B-5000 Namur, Belgium

[12] Univ Paris Diderot, CNRS, Ctr Saclay, IRFU,SAp,DRF,CEA,Lab AIM Paris Saclay, F-91191 Gif Sur Yvette, France

[13] Univ Bordeaux, CNRS, Lab Astrophys Bordeaux, B18N Allee Geoffroy St Hilaire, F-33615 Pessac, France

[14] Univ Paris 06, Sorbonne Univ, CNRS, Lab Meteorol Dynam, 4 Pl Jussieu, F-75005 Paris, France

[15] Cadi Ayyad Univ, FSSM, Lab LPHEA, Oukaimeden Observ, BP 2390, Marrakech, Morocco

[16] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA

[17] Univ Leicester, Dept Phys & Astron, Leicester Inst Space & Earth Observ, Leicester LE1 7RH, Leics, England

[18] Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England

[19] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England

[20] South African Astron Observ, Observ, POB 9, ZA-7935 Cape Town, South Africa

[21] King Abdulaziz Univ, Fac Sci, Space & Astron Dept, Jeddah 21589, Saudi Arabia

[22] King Abdullah Ctr Crescent Observat & Astron, Makkah Clock, Mecca 24231, Saudi Arabia

[23] Univ Geneva, Observ Geneva, 51 Chemin Maillettes, CH-1290 Sauverny, Switzerland

来源：

NATURE | 2017年 / 542卷 / 7642期

基金：

英国科学技术设施理事会; 欧洲研究理事会; 瑞士国家科学基金会; 美国国家科学基金会;

关键词：

MAIN-SEQUENCE STARS; TRANSITING PLANETS; HABITABLE ZONES; SUPER-EARTHS; SYSTEMS; STELLAR; MODELS; ECCENTRICITY; RESONANCES; INVERSION;

D O I：

10.1038/nature21360

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：

One aim of modern astronomy is to detect temperate, Earth-like exoplanets that are well suited for atmospheric characterization. Recently, three Earth-sized planets were detected that transit (that is, pass in front of) a star with a mass just eight per cent that of the Sun, located 12 parsecs away(1). The transiting configuration of these planets, combined with the Jupiter-like size of their host star-named TRAPPIST-1-makes possible in-depth studies of their atmospheric properties with present-day and future astronomical facilities(1-3). Here we report the results of a photometric monitoring campaign of that star from the ground and space. Our observations reveal that at least seven planets with sizes and masses similar to those of Earth revolve around TRAPPIST-1. The six inner planets form a near-resonant chain, such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.1 and 12.35 days) are near-ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inwards(4,5). Moreover, the seven planets have equilibrium temperatures low enough to make possible the presence of liquid water on their surfaces(6-8).

引用

页码：456 / +

页数：12

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