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

Michaël Gillon; Amaury H.M.J. Triaud; Brice Olivier Demory; Emmanuël Jehin; Eric Agol; Katherine M. Deck; Susan M. Lederer; Julien De Wit; Artem Burdanov; James G. Ingalls; Emeline Bolmont; Jeremy Leconte; Sean N. Raymond; Franck Selsis; Martin Turbet; Khalid Barkaoui; Adam Burgasser; Matthew R. Burleigh; Sean J. Carey; Aleksander Chaushev; Chris M. Copperwheat; Laetitia Delrez; Catarina S. Fernandes; Daniel L. Holdsworth; Enrico J. Kotze; Valérie Van Grootel; Yaseen Almleaky; Zouhair Benkhaldoun; Pierre Magain; Didier Queloz

doi:10.1038/nature21360

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

Michaël Gillon
, Amaury H.M.J. Triaud
, Brice Olivier Demory
, Emmanuël Jehin
, Eric Agol
, Katherine M. Deck
, Susan M. Lederer
, Julien De Wit
, Artem Burdanov
, James G. Ingalls
, Emeline Bolmont
, Jeremy Leconte
, Sean N. Raymond
, Franck Selsis
, Martin Turbet
, Khalid Barkaoui
, Adam Burgasser
, Matthew R. Burleigh
, Sean J. Carey
, Aleksander Chaushev

Chris M. Copperwheat, Laetitia Delrez, Catarina S. Fernandes, Daniel L. Holdsworth, Enrico J. Kotze, Valérie Van Grootel, Yaseen Almleaky, Zouhair Benkhaldoun, Pierre Magain, Didier Queloz

University of Liège
Institute of Astronomy
University of Bern
University of Cambridge
University of Washington
NASA Astrobiology Institute's Virtual Planetary Laboratory
California Institute of Technology
NASA Johnson Space Center
Massachusetts Institute of Technology
Spitzer Science Center
University of Namur
Universite Paris-Saclay
Univ. Bordeaux
Cadi Ayyad University
University of California at San Diego
University of Leicester
Liverpool John Moores University
Lancashire Polytechnic
South African Astronomical Observatory
Faculty of Sciences, King Abdulaziz University
King Abdullah Centre for Crescent Observations and Astronomy
Université de Genève

Research output: Contribution to journal › Article › peer-review

Abstract

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. 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. 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. Moreover, the seven planets have equilibrium temperatures low enough to make possible the presence of liquid water on their surfaces.

Original language	English
Pages (from-to)	456-460
Number of pages	5
Journal	Nature
Volume	542
Issue number	7642
DOIs	https://doi.org/10.1038/nature21360
Publication status	Published - 22 Feb 2017

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Gillon, M., Triaud, A. H. M. J., Demory, B. O., Jehin, E., Agol, E., Deck, K. M., Lederer, S. M., De Wit, J., Burdanov, A., Ingalls, J. G., Bolmont, E., Leconte, J., Raymond, S. N., Selsis, F., Turbet, M., Barkaoui, K., Burgasser, A., Burleigh, M. R., Carey, S. J., ... Queloz, D. (2017). Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1. Nature, 542(7642), 456-460. https://doi.org/10.1038/nature21360

@article{9d1a5a7cc31c4ee68e38a107426fa54e,

title = "Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1",

abstract = "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. 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. 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. Moreover, the seven planets have equilibrium temperatures low enough to make possible the presence of liquid water on their surfaces.",

author = "Micha{\"e}l Gillon and Triaud, \{Amaury H.M.J.\} and Demory, \{Brice Olivier\} and Emmanu{\"e}l Jehin and Eric Agol and Deck, \{Katherine M.\} and Lederer, \{Susan M.\} and \{De Wit\}, Julien and Artem Burdanov and Ingalls, \{James G.\} and Emeline Bolmont and Jeremy Leconte and Raymond, \{Sean N.\} and Franck Selsis and Martin Turbet and Khalid Barkaoui and Adam Burgasser and Burleigh, \{Matthew R.\} and Carey, \{Sean J.\} and Aleksander Chaushev and Copperwheat, \{Chris M.\} and Laetitia Delrez and Fernandes, \{Catarina S.\} and Holdsworth, \{Daniel L.\} and Kotze, \{Enrico J.\} and \{Van Grootel\}, Val{\'e}rie and Yaseen Almleaky and Zouhair Benkhaldoun and Pierre Magain and Didier Queloz",

year = "2017",

month = feb,

day = "22",

doi = "10.1038/nature21360",

language = "English",

volume = "542",

pages = "456--460",

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Gillon, M, Triaud, AHMJ, Demory, BO, Jehin, E, Agol, E, Deck, KM, Lederer, SM, De Wit, J, Burdanov, A, Ingalls, JG, Bolmont, E, Leconte, J, Raymond, SN, Selsis, F, Turbet, M, Barkaoui, K, Burgasser, A, Burleigh, MR, Carey, SJ, Chaushev, A, Copperwheat, CM, Delrez, L, Fernandes, CS, Holdsworth, DL, Kotze, EJ, Van Grootel, V, Almleaky, Y, Benkhaldoun, Z, Magain, P & Queloz, D 2017, 'Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1', Nature, vol. 542, no. 7642, pp. 456-460. https://doi.org/10.1038/nature21360

TY - JOUR

T1 - Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1

AU - Gillon, Michaël

AU - Triaud, Amaury H.M.J.

AU - Demory, Brice Olivier

AU - Jehin, Emmanuël

AU - Agol, Eric

AU - Deck, Katherine M.

AU - Lederer, Susan M.

AU - De Wit, Julien

AU - Burdanov, Artem

AU - Ingalls, James G.

AU - Bolmont, Emeline

AU - Leconte, Jeremy

AU - Raymond, Sean N.

AU - Selsis, Franck

AU - Turbet, Martin

AU - Barkaoui, Khalid

AU - Burgasser, Adam

AU - Burleigh, Matthew R.

AU - Carey, Sean J.

AU - Chaushev, Aleksander

AU - Copperwheat, Chris M.

AU - Delrez, Laetitia

AU - Fernandes, Catarina S.

AU - Holdsworth, Daniel L.

AU - Kotze, Enrico J.

AU - Van Grootel, Valérie

AU - Almleaky, Yaseen

AU - Benkhaldoun, Zouhair

AU - Magain, Pierre

AU - Queloz, Didier

PY - 2017/2/22

Y1 - 2017/2/22

N2 - 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. 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. 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. Moreover, the seven planets have equilibrium temperatures low enough to make possible the presence of liquid water on their surfaces.

AB - 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. 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. 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. Moreover, the seven planets have equilibrium temperatures low enough to make possible the presence of liquid water on their surfaces.

U2 - 10.1038/nature21360

DO - 10.1038/nature21360

M3 - Article

C2 - 28230125

AN - SCOPUS:85015982352

SN - 0028-0836

VL - 542

SP - 456

EP - 460

JO - Nature

JF - Nature

IS - 7642

ER -

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

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