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

Author(s): Ciceri, S; Mancini, L; Henning, T; Bakos, Gaspar Aron; Penev, K; et al

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Abstract: 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.
Publication Date: Jul-2016
Electronic Publication Date: 10-Jun-2016
Citation: Ciceri, S, Mancini, L, Henning, T, Bakos, G, Penev, K, Brahm, R, Zhou, G, Hartman, JD, Bayliss, D, Jordán, A, Csubry, Z, de Val-Borro, M, Bhatti, W, Rabus, M, Espinoza, N, Suc, V, Schmidt, B, Noyes, R, Howard, AW, Fulton, BJ, Isaacson, H, Marcy, GW, Butler, RP, Arriagada, P, Crane, JD, Shectman, S, Thompson, I, Tan, TG, Lázár, J, Papp, I, 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 (074401 - 074401. doi:10.1088/1538-3873/128/965/074401
DOI: doi:10.1088/1538-3873/128/965/074401
Type of Material: Journal Article
Journal/Proceeding Title: Publications of the Astronomical Society of the Pacific
Version: Final published version. This is an open access article.

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