techniques: photometric; planets and satellites: detection; Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] We report the discovery by the TESS mission of a super-Earth on a 4.8-days orbit around an inactive M4.5 dwarf (TOI-1680), validated by ground-based facilities. The host star is located 37.14 pc away, with a radius of 0.2100 ± 0.0064 R<SUB>⊙</SUB>, mass of 0.1800 ± 0.0044 M<SUB>⊙</SUB>, and an effective temperature of 3211 ±100 K. We validated and characterized the planet using TESS data, ground-based multi-wavelength photometry from TRAPPIST, SPECULOOS, and LCO, as well as high-resolution AO observations from Keck/NIRC2 and Shane. Our analyses have determined the following parameters for the planet: a radius of 1.466<SUB>−0.049</SUB><SUP>+0.063</SUP> R<SUB>⊕</SUB> and an equilibrium temperature of 404 ± 14 K, assuming no albedo and perfect heat redistribution. Assuming a mass based on mass-radius relations, this planet is a promising target for atmospheric characterization with the James Webb Space Telescope (JWST).
Soubkiou, A.; University Cadi Ayyad, Morocco, University of Porto, Center for Astrophysics, -
Wells, R. D.; University of Bern, Switzerland
Rackham, B. V.; MIT, Department of Earth and Planetary Science, MIT, Center for Space Research/Kavli Institute
Triaud, A. H. M. J.; University of Birmingham, School of Physics and Astronomy
Sebastian, D.; University of Birmingham, School of Physics and Astronomy
Giacalone, S.; University of California, Berkeley, Department of Astronomy
Stassun, K. G.; Vanderbilt University, Department of Physics and Astronomy
Ciardi, D. R.; Infrared Processing and Analysis Center
Collins, K. A.; Harvard Smithsonian Center for Astrophysics
Liu, A.; MIT, Department of Earth and Planetary Science
Gómez Maqueo Chew, Y.; Universidad Nacional Autónoma de México, Instituto de Astronomía, AP 70-264, Ciudad de México, 04510, Mexico
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Benkhaldoun, Z.; University Cadi Ayyad, Morocco
Delrez, Laetitia ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Exoplanets in Transit: Identification and Characterization
Eastman, J. D.; Harvard Smithsonian Center for Astrophysics
Demangeon, O.; University of Porto, Center for Astrophysics, -
Barkaoui, Khalid ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Exoplanets in Transit: Identification and Characterization
Burdanov, A.; MIT, Department of Earth and Planetary Science
Demory, B. -O.; University of Bern, Switzerland
de Wit, J.; MIT, Department of Earth and Planetary Science
Dransfield, G.; University of Birmingham, School of Physics and Astronomy
Ducrot, E.; AIM, CEA, CNRS, Université Paris-Saclay, Université de Paris, F91191, Gif-sur-Yvette, France,
Garcia, Lionel ; Université de Liège - ULiège > Astrobiology
Gómez-Muñoz, M. A.; UNAM, Institute of Astronomy
Hooton, M. J.; University of Cambridge, Institute of Astronomy
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Murray, C. A.; University of Cambridge, Institute of Astronomy
Pedersen, P. P.; University of Cambridge, Institute of Astronomy
Pozuelos, F. J.; Institute of Astrophysics of Andalusia
Queloz, D.; University of Cambridge, Institute of Astronomy
