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HATS9-b and HATS10-b: Two compact hot Jupiters in field 7 of the K2 mission

Date

2015

Authors

Brahm, R.
Jordán, A.
Hartman, J. D.
Bakos, G. A.
Bayliss, Daniel
Penev, K.
Zhou, Guyin (George)
Ciceri, Simona
Rabus, M.
Espinoza, N.

Journal Title

Journal ISSN

Volume Title

Publisher

University of Chicago Press

Abstract

We report the discovery of two transiting extrasolar planets by the HATSouth survey. HATS-9b orbits an old (10.8 ± 1.5 Gyr) V = 13.3 G dwarf star with a period days. The host star has a mass of 1.03 M⊙, radius of 1.503 R⊙, and effective temperature 5366 ± 70 K. The planetary companion has a mass of 0.837 <inf>Mj</inf> and radius of 1.065 R<inf>j</inf>, yielding a mean density of 0.85g cm-3. HATS-10b orbits a V = 13.1 G dwarf star with a period days. The host star has a mass of 1.1 M⊙, radius of 1.11 R⊙, and effective temperature 5880 ± 120 K. The planetary companion has a mass of 0.53 and radius of 0.97 , yielding a mean density of 0.7 g cm-3. Both planets are compact in comparison with planets receiving similar irradiation from their host stars and lie in the nominal coordinates of Field 7 of K2, but only HATS-9b falls on working silicon. Future characterization of HATS-9b with the exquisite photometric precision of the Kepler telescope may provide measurements of its reflected light signature.

Description

Keywords

Citation

Source

Astronomical Journal

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1088/0004-6256/150/1/33

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