## Hats-11B and Hats-12B: Two Transiting Hot Jupiters Orbiting Subsolar Metallicity Stars Selected for the K2 Campaign 7

### Description

We report the discovery of two transiting extrasolar planets from the HATSouth survey. HATS-11, a V = 14.1 G0-star shows a periodic $12.9$ mmag dip in its light curve every 3.6192 days and a radial velocity variation consistent with a Keplerian orbit. HATS-11 has a mass of $1.000\pm 0.060$ ${M}_{\odot }$, a radius of $1.444\pm 0.057$ ${R}_{\odot }$ and an effective temperature of $6060\pm 150$ K, while its companion is a $0.85\pm 0.12$ ${M}_{{\rm{J}}}$, $1.510\pm 0.078$ ${R}_{{\rm{J}}}$ planet...[Show more]

dc.contributor.author Rabus, M Jordán, A Hartman, J D Bakos, G A Espinoza, N Brahm, R Penev, K. Ciceri, Simona Zhou, Guyin (George) Bayliss, Daniel Mancini, L Tan, T.G. Schmidt, Brian Bento (Da Silva Bento), Joao Noyes, R W Lazar, J. Papp, I. Sari, P. 2018-11-29T22:51:52Z 2018-11-29T22:51:52Z 0004-6256 http://hdl.handle.net/1885/152012 We report the discovery of two transiting extrasolar planets from the HATSouth survey. HATS-11, a V = 14.1 G0-star shows a periodic $12.9$ mmag dip in its light curve every 3.6192 days and a radial velocity variation consistent with a Keplerian orbit. HATS-11 has a mass of $1.000\pm 0.060$ ${M}_{\odot }$, a radius of $1.444\pm 0.057$ ${R}_{\odot }$ and an effective temperature of $6060\pm 150$ K, while its companion is a $0.85\pm 0.12$ ${M}_{{\rm{J}}}$, $1.510\pm 0.078$ ${R}_{{\rm{J}}}$ planet in a circular orbit. HATS-12 shows a periodic 5.1 mmag flux decrease every 3.1428 days and Keplerian RV variations around a V = 12.8 F-star. HATS-12 has a mass of $1.489\pm 0.071$ ${M}_{\odot }$, a radius of $2.21\pm 0.21$ ${R}_{\odot }$, and an effective temperature of $6408\pm 75$ K. For HATS-12b, our measurements indicate that this is a $2.38\pm 0.11$ ${M}_{{\rm{J}}}$, $1.35\pm 0.17$ ${R}_{{\rm{J}}}$ planet in a circular orbit. Both host stars show subsolar metallicities of $-0.390\pm 0.060$ dex and $-0.100\pm 0.040$ dex, respectively, and are (slightly) evolved stars. In fact, HATS-11 is among the most metal-poor and, HATS-12, with a $\mathrm{log}{g}_{\star }$ of $3.923\pm 0.065$, is among the most evolved stars hosting a hot-Jupiter planet. Importantly, HATS-11 and HATS-12 have been observed in long cadence by Kepler as part of K2 campaign 7 (EPIC216414930 and EPIC218131080 respectively). application/pdf University of Chicago Press Astronomical Journal Hats-11B and Hats-12B: Two Transiting Hot Jupiters Orbiting Subsolar Metallicity Stars Selected for the K2 Campaign 7 Journal article Imported from ARIES 152 2016 020100 - ASTRONOMICAL AND SPACE SCIENCES a383154xPUB4495 Published Version Rabus, M, Pontificia Universidad Catolica de Chile Jordán, A, Pontificia Universidad Católica de Chile Hartman, J D, Princeton University Bakos, G A, Princeton University Espinoza, N, Pontificia Universidad Catolica de Chile Brahm, R, Pontificia Universidad Catolica de Chile Penev, K., Princeton University Ciceri, Simona, Max Planck Institut fur Astronomie Zhou, Guyin (George), College of Science, ANU Bayliss, Daniel, College of Science, ANU Mancini, L, Max Planck Institute for Astronomy Tan, T.G., Perth Exoplanet Survey Telescope Schmidt, Brian, College of Science, ANU Bento (Da Silva Bento), Joao, College of Science, ANU Noyes, R W, Harvard-Smithsonian Center for Astrophysics Lazar, J., Hungarian Astronomical Association Papp, I., Hungarian Astronomical Association Sari, P., Hungarian Astronomical Association 4 10.3847/0004-6256/152/4/88 970102 - Expanding Knowledge in the Physical Sciences 2018-11-29T07:41:39Z 2-s2.0-84991672217 000383805000010 Open Access ANU Research Publications