HAT-P-16b: A 4 M J planet transiting a bright star on an eccentric orbit
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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 Tc = 2455027.59293 ± 0.00031 (BJD10), and transit duration 0.1276 ± 0.0013 days. The host star has a mass of 1.22 ± 0.04 M , radius of 1.24 ± 0.05 R , 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 J and radius of 1.289 ± 0.066 R J, yielding a mean density of 2.42 ± 0.35 g cm–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 10s.
Originalsprog | Engelsk |
---|---|
Tidsskrift | Astrophysical Journal |
Vol/bind | 720 |
Udgave nummer | 2 |
Sider (fra-til) | 1118-1125 |
Antal sider | 8 |
ISSN | 0004-637X |
DOI | |
Status | Udgivet - 17 aug. 2010 |
ID: 32930028