TESS discovery of a super-Earth orbiting the M-dwarf star TOI-1680

DOI: 
10.1051/0004-6361/202347040
Publication date: 
11/09/2023
Main author: 
Ghachoui, M.
IAA authors: 
Pozuelos, F. J.
Authors: 
Ghachoui, M.;Soubkiou, A.;Wells, R. D.;Rackham, B. V.;Triaud, A. H. M. J.;Sebastian, D.;Giacalone, S.;Stassun, K. G.;Ciardi, D. R.;Collins, K. A.;Liu, A.;Gómez Maqueo Chew, Y.;Gillon, M.;Benkhaldoun, Z.;Delrez, L.;Eastman, J. D.;Demangeon, O.;Barkaoui, K.;Burdanov, A.;Demory, B. -O.;de Wit, J.;Dransfield, G.;Ducrot, E.;Garcia, L.;Gómez-Muñoz, M. A.;Hooton, M. J.;Jehin, E.;Murray, C. A.;Pedersen, P. P.;Pozuelos, F. J.;Queloz, D.;Sabin, L.;Schanche, N.;Timmermans, M.;Gonzales, E. J.;Dressing, C. D.;Aganze, C.;Burgasser, A. J.;Gerasimov, R.;Hsu, C.;Theissen, C. A.;Charbonneau, D.;Jenkins, J. M.;Latham, D. W.;Ricker, G.;Seager, S.;Shporer, A.;Twicken, J. D.;Vanderspek, R.;Winn, J. N.;Collins, K. I.;Fukui, A.;Gan, T.;Narita, N.;Schwarz, R. P.
Journal: 
Astronomy and Astrophysics
Publication type: 
Article
Volume: 
677
Pages: 
A31
Abstract: 
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).
Database: 
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/2023A&A...677A..31G/abstract
ADS Bibcode: 
2023A&A...677A..31G
Keywords: 
techniques: photometric;planets and satellites: detection;Astrophysics - Earth and Planetary Astrophysics