publication . Preprint . Article . Other literature type . 2017

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

Franck Selsis; Emeline Bolmont; Catarina Silva Fernandes; Valérie Van Grootel; Amaury H. M. J. Triaud; Sean Carey; Pierre Magain; Eric Agol; Artem Burdanov; Emmanuel Jehin; ...
Open Access English
  • Published: 22 Feb 2017
Abstract
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 with the Jupiter-like size of their host star - named TRAPPIST-1 - makes possible in-depth 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. ...
Subjects
arXiv: Astrophysics::Earth and Planetary AstrophysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: Astrophysics - Earth and Planetary Astrophysics, QB, QC, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], F500, Article, Planetary mass, Exoplanet, Astrobiology, Planetary mnemonic, Planet, Terrestrial planet, Kepler-47, Planetary system, Astronomy, Kepler-62, Physics
Funded by
SNSF| Discovering and probing the atmospheres of rocky exoplanets
Project
  • Funder: Swiss National Science Foundation (SNSF)
  • Project Code: PP00P2_163967
  • Funding stream: Careers | SNSF Professorships
,
EC| SPECULOOS
Project
SPECULOOS
SPECULOOS: searching for habitable planets amenable for biosignatures detection around the nearest ultra-cool stars
  • Funder: European Commission (EC)
  • Project Code: 336480
  • Funding stream: FP7 | SP2 | ERC
,
ANR| MOJO
Project
MOJO
MODELING JOVIAN PLANET GROWTH
  • Funder: French National Research Agency (ANR) (ANR)
  • Project Code: ANR-13-BS05-0003
,
EC| SPIRE
Project
SPIRE
Stars: dynamical Processes driving tidal Interactions, Rotation and Evolution
  • Funder: European Commission (EC)
  • Project Code: 647383
  • Funding stream: H2020 | ERC | ERC-COG
,
EC| WHIPLASH
Project
WHIPLASH
WHat next? an Integrated PLanetary Atmosphere Simulator: from Habitable worlds to Hot jupiters
  • Funder: European Commission (EC)
  • Project Code: 679030
  • Funding stream: H2020 | ERC | ERC-STG
40 references, page 1 of 3

1. Gillon, M. et al. Temperate Earth-sized planets transiting a nearby ultracool dwarf star. Nature 533, 221-224 (2016).

2. de Wit, J. et al. A combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c. Nature 537, 69-72 (2016).

3. Barstow, J. K. & Irwin P. G. J. Habitable worlds with JWST: transit spectroscopy of the TRAPPIST-1 system? Mon. Not. R. Astron. Soc. 461, L92-L96 (2016).

4. Cresswell, P. & Nelson, R. P. On the evolution of multiple protoplanets embedded in a protostellar disc. Astron. Astrophys. 450, 833-853 (2006). 6. Kopparapu, R. K. et al. Habitable zones around main-sequence stars: new estimates. Astrophys. J. 765, 131 (2013). 7. Leconte, J. et al. 3D climate modelling of close-in land planets: Circulation patterns, climate moist instability, and habitability. Astron. & Astrophys. 554, A69 (2013). 8. Stevenson, D. J. Life-sustaining planets in interstellar space? Nature 400, 32 (1999).

9. Gillon, M. et al. The TRAPPIST survey of southern transiting planets. I. Thirty eclipses of the ultrashort period planet WASP-43 b. Astron.& Astrophys. 542, A4 (2012).

10. Agol, E., Steffen, J., Sari, R. & Clarkson, W. On detecting terrestrial planets with timing of giant planet transits. Mon. Not. R. Astron. Soc. 359, 567-579 (2005).

11. Holman, M. J. & Murray, N. W. The use of transit timing to detect terrestrial-mass extrasolar planets. Science 307, 1288-1291 (2005).

12. Fabrycky, D. C. Non-Keplerian dynamics of exoplanets, in Exoplanets, edited by S. Seager, University of Arizona Press, Tucson, AZ USA (2010). [OpenAIRE]

13. Winn, J. N. Exoplanets transits and occultations, in Exoplanets, edited by S. Seager, University of Arizona Press, Tucson, AZ USA (2010).

14. Zeng, L., Sasselov, D. D. & Jacobsen, S. B. Mass-radius relation for rocky planets based on PREM, Astrophys. J. 819, 127 (2016). [OpenAIRE]

15. Chiang, E. & Laughlin, G. The minimum-mass extrasolar nebula: in situ formation of close-in superEarths. Mon. Not. R. Astron. Soc. 431, 3444-3455 (2013).

16. Kane, S. R., Hinkel, N. R. & Raymond, S. N. Solar system moons as analogs for compact exoplanetary systems. Astron. J. 146, 122 (2013). [OpenAIRE]

17. Mac Donald, M. G. et al. A dynamical analysis of the Kepler-80 system of five transiting planets. Astron. J. 152, 105 (2016).

18. Papaloizou, J. C. B. & Szuszkiewicz, E. On the migration-induced resonances in a system of two planets with masses in the Earth mass range. Mon. Not. R. Astron. Soc. 363, 153-176 (2005). [OpenAIRE]

19. Terquem, C. & Papaloizou, J. C. B. Migration and the formation of systems of hot super-Earths and Neptunes. Astrophys. J. 654, 1110-1120 (2007).

40 references, page 1 of 3
Abstract
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 with the Jupiter-like size of their host star - named TRAPPIST-1 - makes possible in-depth 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. ...
Subjects
arXiv: Astrophysics::Earth and Planetary AstrophysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: Astrophysics - Earth and Planetary Astrophysics, QB, QC, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], F500, Article, Planetary mass, Exoplanet, Astrobiology, Planetary mnemonic, Planet, Terrestrial planet, Kepler-47, Planetary system, Astronomy, Kepler-62, Physics
Funded by
SNSF| Discovering and probing the atmospheres of rocky exoplanets
Project
  • Funder: Swiss National Science Foundation (SNSF)
  • Project Code: PP00P2_163967
  • Funding stream: Careers | SNSF Professorships
,
EC| SPECULOOS
Project
SPECULOOS
SPECULOOS: searching for habitable planets amenable for biosignatures detection around the nearest ultra-cool stars
  • Funder: European Commission (EC)
  • Project Code: 336480
  • Funding stream: FP7 | SP2 | ERC
,
ANR| MOJO
Project
MOJO
MODELING JOVIAN PLANET GROWTH
  • Funder: French National Research Agency (ANR) (ANR)
  • Project Code: ANR-13-BS05-0003
,
EC| SPIRE
Project
SPIRE
Stars: dynamical Processes driving tidal Interactions, Rotation and Evolution
  • Funder: European Commission (EC)
  • Project Code: 647383
  • Funding stream: H2020 | ERC | ERC-COG
,
EC| WHIPLASH
Project
WHIPLASH
WHat next? an Integrated PLanetary Atmosphere Simulator: from Habitable worlds to Hot jupiters
  • Funder: European Commission (EC)
  • Project Code: 679030
  • Funding stream: H2020 | ERC | ERC-STG
40 references, page 1 of 3

1. Gillon, M. et al. Temperate Earth-sized planets transiting a nearby ultracool dwarf star. Nature 533, 221-224 (2016).

2. de Wit, J. et al. A combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c. Nature 537, 69-72 (2016).

3. Barstow, J. K. & Irwin P. G. J. Habitable worlds with JWST: transit spectroscopy of the TRAPPIST-1 system? Mon. Not. R. Astron. Soc. 461, L92-L96 (2016).

4. Cresswell, P. & Nelson, R. P. On the evolution of multiple protoplanets embedded in a protostellar disc. Astron. Astrophys. 450, 833-853 (2006). 6. Kopparapu, R. K. et al. Habitable zones around main-sequence stars: new estimates. Astrophys. J. 765, 131 (2013). 7. Leconte, J. et al. 3D climate modelling of close-in land planets: Circulation patterns, climate moist instability, and habitability. Astron. & Astrophys. 554, A69 (2013). 8. Stevenson, D. J. Life-sustaining planets in interstellar space? Nature 400, 32 (1999).

9. Gillon, M. et al. The TRAPPIST survey of southern transiting planets. I. Thirty eclipses of the ultrashort period planet WASP-43 b. Astron.& Astrophys. 542, A4 (2012).

10. Agol, E., Steffen, J., Sari, R. & Clarkson, W. On detecting terrestrial planets with timing of giant planet transits. Mon. Not. R. Astron. Soc. 359, 567-579 (2005).

11. Holman, M. J. & Murray, N. W. The use of transit timing to detect terrestrial-mass extrasolar planets. Science 307, 1288-1291 (2005).

12. Fabrycky, D. C. Non-Keplerian dynamics of exoplanets, in Exoplanets, edited by S. Seager, University of Arizona Press, Tucson, AZ USA (2010). [OpenAIRE]

13. Winn, J. N. Exoplanets transits and occultations, in Exoplanets, edited by S. Seager, University of Arizona Press, Tucson, AZ USA (2010).

14. Zeng, L., Sasselov, D. D. & Jacobsen, S. B. Mass-radius relation for rocky planets based on PREM, Astrophys. J. 819, 127 (2016). [OpenAIRE]

15. Chiang, E. & Laughlin, G. The minimum-mass extrasolar nebula: in situ formation of close-in superEarths. Mon. Not. R. Astron. Soc. 431, 3444-3455 (2013).

16. Kane, S. R., Hinkel, N. R. & Raymond, S. N. Solar system moons as analogs for compact exoplanetary systems. Astron. J. 146, 122 (2013). [OpenAIRE]

17. Mac Donald, M. G. et al. A dynamical analysis of the Kepler-80 system of five transiting planets. Astron. J. 152, 105 (2016).

18. Papaloizou, J. C. B. & Szuszkiewicz, E. On the migration-induced resonances in a system of two planets with masses in the Earth mass range. Mon. Not. R. Astron. Soc. 363, 153-176 (2005). [OpenAIRE]

19. Terquem, C. & Papaloizou, J. C. B. Migration and the formation of systems of hot super-Earths and Neptunes. Astrophys. J. 654, 1110-1120 (2007).

40 references, page 1 of 3
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