## HATS-71b: A Giant Planet Transiting an M3 Dwarf Star in TESS Sector 1

### Description

We report the discovery of HATS-71b, a transiting gas giant planet on a $P=3.7955$ day orbit around a $G=15.35$ 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...[Show more]

dc.contributor.author Bakos, G. A. Bento, Joao Bhatti, Waqas Brahm, R. Csubry, Z. Espinoza, N. Hartman, J. D. Henning, T. Jordan, A. Mancini, L. Penev, Kaloyan 2022-07-15T00:58:42Z 2022-07-15T00:58:42Z 0004-6256 http://hdl.handle.net/1885/268860 We report the discovery of HATS-71b, a transiting gas giant planet on a $P=3.7955$ day orbit around a $G=15.35$ 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 $1.024\pm 0.018$ ${R}_{{\rm{J}}}$ and mass of $0.37\,\pm 0.24$ ${M}_{{\rm{J}}}$ (95% confidence upper limit of $\lt 0.80$ ${M}_{{\rm{J}}}$), while the star has a mass of $0.4861\pm 0.0060$ ${M}_{\odot }$ and a radius of $0.4783\pm 0.0060$ ${R}_{\odot }$. application/pdf en_AU University of Chicago Press © 2020 The American Astronomical Society Astronomical Journal HATS-71b: A Giant Planet Transiting an M3 Dwarf Star in TESS Sector 1 Journal article Imported from ARIES 159 2020-03-31 2020-05-18 510109 - Stellar astronomy and planetary systems a383154xPUB13533 https://iopscience.iop.org/ Published Version Bakos, G. A., Princeton University Bayliss, D., University of Warwick Bento (Da Silva Bento), Joao, College of Science, ANU Bhatti, Waqas, Princeton University Brahm, R., Pontificia Universidad Catolica de Chile Csubry, Z., Princeton University Espinoza, N., Max Planck Institute for Astronomy Hartman, J. D., Princeton University Henning, T., Max Planck Institute for Astronomy Jordan, A., Pontificia Universidad Catolica de Chile Mancini, L., Max Planck Institute for Astronomy Penev, Kaloyan, The University of Texas at Dallas 6 1 13 10.3847/1538-3881/ab8ad1 2021-08-01T08:22:39Z 2-s2.0-85087181798 Open Access https://v2.sherpa.ac.uk/id/publication/11250..."Publisher's version can be made open access on institutional repository" from SHERPA/RoMEO site (as at 15.7.2022) ANU Research Publications