Discovery of a transiting planet and eight eclipsing binaries in HATNet field G205

David W. Latham, Gaspar A. Bakos, Guillermo Torres, Robert P. Stefanik, Robert W. Noyes, Geza Kovacs, A. Pál, Geoffrey W. Marcy, Debra A. Fischer, R. Paul Butler, Brigitta Sipocz, Dimitar D. Sasselov, Gilbert A. Esquerdo, Steven S. Vogt, Joel D. Hartman, Gabor Kovacs, J. Lázár, I. Papp, P. Sári

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Abstract

We report the discovery of HAT-P-8b, a transiting planet with mass Mp = 1.52+0.18 -0.16 MJ, radius Rp = 1.50+0.08 -0.06 RJ, 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 = 1.280.04 M and R = 1.58+0.08 -0.06 R. HAT-P-8b was initially identified as one of the 32 transitingplanet 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.

Original languageEnglish
Pages (from-to)1107-1119
Number of pages13
JournalAstrophysical Journal
Volume704
Issue number2
DOIs
Publication statusPublished - Oct 20 2009

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Keywords

  • Color figure
  • GSC 02757-01152)
  • Individual (HAT-P-8
  • Machine-readable tables
  • Planetary systems
  • Spectroscopic Online-only material
  • Stars
  • Techniques

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Latham, D. W., Bakos, G. A., Torres, G., Stefanik, R. P., Noyes, R. W., Kovacs, G., Pál, A., Marcy, G. W., Fischer, D. A., Butler, R. P., Sipocz, B., Sasselov, D. D., Esquerdo, G. A., Vogt, S. S., Hartman, J. D., Kovacs, G., Lázár, J., Papp, I., & Sári, P. (2009). Discovery of a transiting planet and eight eclipsing binaries in HATNet field G205. Astrophysical Journal, 704(2), 1107-1119. https://doi.org/10.1088/0004-637X/704/2/1107