HAT-P-16b: A 4 M {sub J} PLANET TRANSITING A BRIGHT STAR ON AN ECCENTRIC ORBIT ,
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)
- Konkoly Observatory, Budapest (Hungary)
- Department of Astronomy, University of California, Berkeley, CA 94720 (United States)
- Department of Astronomy, Yale University, New Haven, CT 06511 (United States)
- Department of Astrophysics, California Institute of Technology, MC 249-17, Pasadena, CA 91125 (United States)
- Niels Bohr Institute, Copenhagen University (Denmark)
- Hungarian Astronomical Association, Budapest (Hungary)
We report the discovery of HAT-P-16b, a transiting extrasolar planet orbiting the V = 10.8 mag F8 dwarf GSC 2792-01700, with a period P = 2.775960 {+-} 0.000003 days, transit epoch T{sub c} = 2455027.59293 {+-} 0.00031 (BJD{sup 10}), and transit duration 0.1276 {+-} 0.0013 days. The host star has a mass of 1.22 {+-} 0.04 M{sub sun}, radius of 1.24 {+-} 0.05 R{sub sun}, effective temperature 6158 {+-} 80 K, and metallicity [Fe/H] = +0.17 {+-} 0.08. The planetary companion has a mass of 4.193 {+-} 0.094 M{sub J} and radius of 1.289 {+-} 0.066 R {sub J}, yielding a mean density of 2.42 {+-} 0.35 g cm{sup -3}. Comparing these observed characteristics with recent theoretical models, we find that HAT-P-16b is consistent with a 1 Gyr H/He-dominated gas giant planet. HAT-P-16b resides in a sparsely populated region of the mass-radius diagram and has a non-zero eccentricity of e = 0.036 with a significance of 10{sigma}.
- OSTI ID:
- 21460071
- Journal Information:
- Astrophysical Journal, Vol. 720, Issue 2; Other Information: DOI: 10.1088/0004-637X/720/2/1118; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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