HATS-15b and HATS-16b: Two Massive Planets Transiting Old G Dwarf Stars

Ciceri, S. and Mancini, L. and Henning, T. and Bakos, G. and Penev, K. and Brahm, R. and Zhou, G. ORCID: https://orcid.org/0000-0002-4891-3517 and Hartman, J. D. and Bayliss, D. and Jordan, A. and Csubry, Z. and de Val-Borro, M. and Bhatti, W. and Rabus, M. and Espinoza, N. and Suc, V. and Schmidt, B. and Noyes, R. and Howard, A. W. and Fulton, B. J. and Isaacson, H. and Marcy, G. W. and Butler, R. P. and Arriagada, P. and Crane, J. D. and Shectman, S. and Thompson, I. and Tan, T. G. and Lazar, J. and Papp, I. and Sari, P. (2016) HATS-15b and HATS-16b: Two Massive Planets Transiting Old G Dwarf Stars. Publications of the Astronomical Society of the Pacific, 128 (965):074401. pp. 1-16. ISSN 0004-6280

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We report the discovery of HATS-15 b and HATS-16 b, two massive transiting extrasolar planets orbiting evolved (∼10 Gyr) main-sequence stars. The planet HATS-15 b, which is hosted by a G9 V star (V = 14.8 mag), is a hot Jupiter with mass of 2.17 ± 0.15 MJ and radius of 1.105 ± 0.040 RJ, and it completes its orbit in about 1.7 days. HATS-16 b is a very massive hot Jupiter with mass of 3.27 ± 0.19 MJ and radius of 1.30 ± 0.15 RJ; it orbits around its G3 V parent star (V = 13.8 mag) in ∼2.7 days. HATS-16 is slightly active and shows a periodic photometric modulation, implying a rotational period of 12 days, which is unexpectedly short given its isochronal age. This fast rotation might be the result of the tidal interaction between the star and its planet.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 01 Feb 2022 03:58
Last Modified: 02 Feb 2022 04:54
Uncontrolled Keywords: Planets and satellites: Detection; Stars: Fundamental parameters; Astrophysics - Earth and Planetary Astrophysics
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280120 Expanding knowledge in the physical sciences
Identification Number or DOI: https://doi.org/10.1088/1538-3873/128/965/074401
URI: http://eprints.usq.edu.au/id/eprint/44979

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