HATS-15b and HATS-16b: Two massive planets transiting old G Dwarf Stars

S. Ciceri, L. Mancini, T. Henning, G. Bakos, K. Penev, R. Brahm, G. Zhou, J. D. Hartman, D. Bayliss, A. Jordán, Z. Csubry, M. de Val-Borro, W. Bhatti, M. Rabus, N. Espinoza, V. Suc, B. Schmidt, R. Noyes, A. W. Howard, B. J. FultonH. Isaacson, G. W. Marcy, R. P. Butler, P. Arriagada, J. D. Crane, S. Shectman, I. Thompson, T. G. Tan, J. Lázár, I. Papp, P. Sari

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7 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Número de artículo074401
PublicaciónPublications of the Astronomical Society of the Pacific
Volumen128
N.º965
DOI
EstadoPublicada - jul. 2016
Publicado de forma externa

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