TESS discovery of a super-Earth orbiting the M dwarf star TOI-1680
| Autor: | 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., Chew, Y. Gómez Maqueo, 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. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | A&A 677, A31 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/0004-6361/202347040 |
| Popis: | We report the discovery by the TESS mission of a super-Earth on a 4.8-d 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_sun, mass of 0.1800+/-0.0044 M_sun 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+0.063/-0.049 R_earth 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). Comment: Accepted in A&A |
| Databáze: | arXiv |
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