Reference : Seven temperate terrestrial planets around the nearby ultracool dwarf star
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/207683
Seven temperate terrestrial planets around the nearby ultracool dwarf star
English
Gillon, Michaël mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Triaud, Amaury [2Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK > > > >]
Demory, Brice-Olivier [University of Bern, Center for Space and Habitability, Sidlerstrasse 5, CH-3012, Bern, Switzerland > > > >]
Jehin, Emmanuel mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Agol, Eric [Astronomy Department, University of Washington, Seattle, WA, 98195, USA > > > >]
Deck, Katherine [Department of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA > > > >]
Lederer, Susan [NASA Johnson Space Center, 2101 NASA Parkway, Houston, Texas, 77058, USA > > > >]
de Wit, Julien [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts > > > >]
Burdanov, Artem [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Ingalls, James [Spitzer Science Center, California Institute of Technology, 1200 E California Boulevard, Mail Code 314-6, Pasadena, CA > > > >]
Bolmont, Emeline [NaXys, Department of Mathematics, University of Namur, 8 Rempart de la Vierge, 5000 Namur, Belgium > > > >]
Leconte, Jeremy [Laboratoire d'astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, Allée Geoffroy Saint-Hilaire, F-33615 Pessac, > > > >]
Raymond, Sean [Laboratoire d'astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, Allée Geoffroy Saint-Hilaire, F-33615 Pessac, > > > >]
Selsis, Franck [Laboratoire d'astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, Allée Geoffroy Saint-Hilaire, F-33615 Pessac, > > > >]
Turbet, Martin [Laboratoire de Météorologie Dynamique, Sorbonne Universités, UPMC Univ Paris 06, CNRS, 4 place Jussieu, 75005 > > > >]
Barkaoui, Khalid [Laboratoire LPHEA, Oukaimeden Observatory, Cadi Ayyad University/FSSM, BP 2390, Marrakesh, Morocco > > > >]
Burgasser, Adam [Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA, 92093, USA > > > >]
Burleigh, Matthew [Leicester Institute for Space and Earth Observation, Dept. of Physics and Astronomy, University of Leicester, Leicester > > > >]
Carey, Sean [Spitzer Science Center, California Institute of Technology, 1200 E California Boulevard, Mail Code 314-6, Pasadena, CA > > > >]
Chaushev, Aleksander [South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, South Africa > > > >]
Copperwheat, Chris [Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 5RF, UK > > > >]
Delrez, Laetitia [Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, UK > > > >]
Silva Fernandes, Catarina mailto [Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, Bat. > > > >]
Holdsworth, Daniel [Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK > > > >]
Kotze, Enrico [South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, South Africa > > > >]
Van Grootel, Valérie [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
Almleaky, Yaseen [Space and Astronomy Department, Faculty of Science, King Abdulaziz University, 21589 Jeddah, Saudi Arabia. > > > >]
Benkhaldoun, Zouhair [Laboratoire LPHEA, Oukaimeden Observatory, Cadi Ayyad University/FSSM, BP 2390, Marrakesh, Morocco > > > >]
Magain, Pierre [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Queloz, Didier [Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, UK > > > >]
23-Feb-2017
Nature
Nature Publishing Group
542
456-460
Yes (verified by ORBi)
International
0028-0836
1476-4687
Basingstoke
United Kingdom
[en] exoplanets ; astrobiology
[en] One focus of modern astronomy is to detect temperate terrestrial exoplanets well-suited
for atmospheric characterisation. A milestone was recently achieved with the detection
of three Earth-sized planets transiting (i.e. passing in front of) a star just 8% the mass of
the Sun 12 parsecs away. Indeed, the transiting configuration of these planets combined
with the Jupiter-like size of their host star - named TRAPPIST-1 - makes possible indepth
studies of their atmospheric properties with current and future astronomical
facilities. Here we report the results of an intensive photometric monitoring
campaign of that star from the ground and with the Spitzer Space Telescope. Our
observations reveal that at least seven planets with sizes and masses similar to the 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, 9.21, 12.35 days) are near ratios of small
integers. This architecture suggests that the planets formed farther from the star and
migrated inward. The seven planets have equilibrium temperatures low enough to
make possible liquid water on their surfaces.
Professionals
http://hdl.handle.net/2268/207683
10.1038/nature21360
http://www.trappist.one/
FP7 ; 336480 - SPECULOOS - SPECULOOS: searching for habitable planets amenable for biosignatures detection around the nearest ultra-cool stars

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
trappist1_sevenwonders.pdfPublisher postprint9.17 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.