HATS-71b: A Giant Planet Transiting an M3 Dwarf Star in TESS Sector 1
/ Authors
G. Bakos, D. Bayliss, J. Bento, W. Bhatti, R. Brahm, Z. Csubry, N. Espinoza, J. Hartman, T. Henning, A. Jord'an
and 34 more authors
L. Mancini, K. Penev, M. Rabus, P. Sarkis, V. Suc, Miguel de Val-Borro, G. Zhou, R. P. Butler, J. Crane, S. Durkan, S. Shectman, J. Kim, J. L'az'ar, I. Papp, P. S'ari, G. Ricker, R. Vanderspek, D. Latham, S. Seager, J. Winn, J. Jenkins, A. D. Chacon, G. FHur'esz, B. Goeke, J. Li, S. Quinn, E. Quintana, P. Tenenbaum, J. Teske, M. Vezie, L. Yu, C. Stockdale, P. Evans, H. Relles
/ Abstract
We report the discovery of HATS-71b, a transiting gas giant planet on a day orbit around a mag M3 dwarf star. HATS-71 is the coolest M dwarf star known to host a hot Jupiter. The loss of light during transits is 4.7%, more than in any other confirmed transiting planet system. The planet was identified as a candidate by the ground-based HATSouth transit survey. It was confirmed using ground-based photometry, spectroscopy, and imaging, as well as space-based photometry from the NASA Transiting Exoplanet Survey Satellite mission (TIC 234523599). Combining all of these data, and utilizing Gaia DR2, we find that the planet has a radius of and mass of (95% confidence upper limit of ), while the star has a mass of and a radius of .
Journal: The Astronomical Journal