期刊
ASTROPHYSICAL JOURNAL
卷 704, 期 2, 页码 1107-1119出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/704/2/1107
关键词
planetary systems; stars: individual (HAT-P-8, GSC 02757-01152); techniques: spectroscopic
资金
- NASA [NNG04GN74G, NNX08AF23G, HST-HF-01170.01-A, NNG04LG89G]
- SAO IR D
- NSF Astronomy and Astrophysics Program
- Kepler Mission under NASA Cooperative Agreement [NCC2-1390]
- Hungarian Scientific Research Foundation ( OTKA) [K-60750]
- STFC [ST/G002622/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G002622/1] Funding Source: researchfish
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0908870] Funding Source: National Science Foundation
We report the discovery of HAT-P-8b, a transiting planet with mass M-p = 1.52(-0.16)(+0.18) M-J, radius R-p = 1.50(-0.06)(+0.08) R-J, and photometric period P = 3.076 days. HAT-P-8b has a somewhat inflated radius for its mass, and a somewhat large mass for its period. The host star is a solar-metallicity F dwarf, with mass M-* = 1.28 +/- 0.04 M-circle dot and R-* = 1.52(-006)(+0.18) R-circle dot. HAT-P-8b was initially identified as one of the 32 transiting-planet candidates in HATNet field G205. We describe the procedures that we have used to follow up these candidates with spectroscopic and photometric observations, and we present a status report on our interpretation for 28 of the candidates. Eight are eclipsing binaries with orbital solutions whose periods are consistent with their photometric ephemerides; two of these spectroscopic orbits are single-lined and six are double-lined.
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