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Title:
The Transit Light Curve Project. VII. The Not-So-Bloated Exoplanet HAT-P-1b [ Erratum: 2008AJ....136.1753W ]
Authors:
Winn, Joshua N.; Holman, Matthew J.; Bakos, Gaspar Á.; Pál, András; Johnson, John Asher; Williams, Peter K. G.; Shporer, Avi; Mazeh, Tsevi; Fernandez, José; Latham, David W.; Gillon, Michael
Affiliation:
AA(Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ), AB(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AC(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ; Hubble Fellow ), AD(Department of Astronomy, Eötvös Loránd University, Pf. 32, H-1518 Budapest, Hungary ), AE(Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720, USA ), AF(Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720, USA ), AG(Wise Observatory, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel ), AH(Wise Observatory, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel ), AI(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ; Department of Astronomy, Pontificia Universidad Católica, Casilla 306, Santiago 22, Chile ), AJ(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AK(Observatoire de l'Université de Genève, 1290 Sauverny, Switzerland ; Institut d'Astrophysique et de Géophysique, Université de Liège, 4000 Liège, Belgium)
Publication:
The Astronomical Journal, Volume 134, Issue 4, pp. 1707-1712 (2007). (AJ Homepage)
Publication Date:
10/2007
Origin:
IOP
DOI:
10.1086/521599
Bibliographic Code:
2007AJ....134.1707W

Abstract

We present photometry of the G0 star HAT-P-1 during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 ± 0.05 times larger, and its surface gravity is 2.7 ± 0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 minute and do not depart significantly from a constant period.

Associated Articles

Part 1     Part  2     Part  5     Main Paper     Part  4     Part  3     Part  4     Part  8     Erratum    


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