Reference : π Earth: A 3.14 day Earth-sized Planet from K2's Kitchen Served Warm by the SPECULOOS Team
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/249338
π Earth: A 3.14 day Earth-sized Planet from K2's Kitchen Served Warm by the SPECULOOS Team
English
Niraula, Prajwal [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
de Wit, Julien [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
Rackham, Benjamin V. [51 Pegasi b Fellow.; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
Ducrot, Elsa mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Burdanov, Artem [Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA]
Crossfield, Ian J. M. [Kansas University, Department of Physics and Astronomy, 1082 Malott, 1251 Wescoe Hall Drive, Lawrence, KS 66045, USA]
Van Grootel, Valérie mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
Murray, Catriona [Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK]
Garcia, Lionel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Alonso, Roi [Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain; Dpto. de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain]
Beard, Corey [Department of Physics & Astronomy, University of California, Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697, USA]
Maqueo Chew, Yilen Gómez [Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad Universitaria, CDMX, C.P. 04510, Mexico]
Delrez, Laetitia mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Demory, Brice-Olivier [University of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, Switzerland]
Fulton, Benjamin J. [NASA Exoplanet Science Institute/Caltech-IPAC, Pasadena, CA, USA]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Günther, Maximilian N. [Juan Carlos Torres Fellow.; Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA]
Howard, Andrew W. [California Institute of Technology, Pasadena, CA, USA]
Issacson, Howard [Department of Astronomy, University of California, Berkeley, Berkeley, CA 94720, USA]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Pedersen, Peter P. [Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK]
Pozuelos Romero, Francisco José mailto [Astrobiology Research Unit, University of Liège, Allée du 6 Août, 19, B-4000 Liège (Sart-Tilman), Belgium; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, University of Liège, Allée du 6 Août 19C, B-4000 Liége, Belgium]
Queloz, Didier [Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK]
Rebolo-López, Rafael [Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain; Dpto. de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain]
Lalitha, Sairam [School of Physics & Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK]
Sebastian, Daniel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Thompson, Samantha [Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK]
Triaud, Amaury H. M. J. [School of Physics & Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK)]
1-Oct-2020
Astronomical Journal
American Astronomical Society
160
172
Yes (verified by ORBi)
International
0004-6256
1538-3881
United States
[en] Exoplanet detection methods ; Transit photometry ; 489 ; 1709 ; Astrophysics - Earth and Planetary Astrophysics
[en] We report on the discovery of a transiting Earth-sized (0.95R[SUB]⊕[/SUB]) planet around an M3.5 dwarf star at 57 pc, EPIC 249631677. The planet has a period of ∼3.14 days, i.e., ∼π, with an installation of 7.45 S[SUB]⊕[/SUB]. The detection was made using publicly available data from K2's Campaign 15. We observed three additional transits with SPECULOOS Southern and Northern Observatories, and a stellar spectrum from Keck/HIRES, which allowed us to validate the planetary nature of the signal. The confirmed planet is well suited for comparative terrestrial exoplanetology. While exoplanets transiting ultracool dwarfs present the best opportunity for atmospheric studies of terrestrial exoplanets with the James Webb Space Telescope, those orbiting mid-M dwarfs within 100 pc such as EPIC 249631677b will become increasingly accessible with the next generation of observatories.
EU - European Union
Professionals
http://hdl.handle.net/2268/249338
also: http://hdl.handle.net/2268/252004
10.3847/1538-3881/aba95f
https://ui.adsabs.harvard.edu/abs/2020AJ....160..172N
FP7 ; 336480 - SPECULOOS - SPECULOOS: searching for habitable planets amenable for biosignatures detection around the nearest ultra-cool stars

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