[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Winn, Joshua N; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Holman, Matthew J; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Bakos, Gaspar Á; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ; Hubble Fellow
Pál, András; Department of Astronomy, Eötvös Loránd University, Pf. 32, H-1518 Budapest, Hungary
Johnson, John Asher; Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720, USA
Williams, Peter K G; Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720, USA
Shporer, Avi; Wise Observatory, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
Mazeh, Tsevi; Wise Observatory, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
Fernandez, José; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ; Department of Astronomy, Pontificia Universidad Católica, Casilla 306, Santiago 22, Chile
Latham, David W; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Language :
English
Title :
The Transit Light Curve Project. VII. The Not-So-Bloated Exoplanet HAT-P-1b
Publication date :
01 October 2007
Journal title :
Astronomical Journal
ISSN :
0004-6256
eISSN :
1538-3881
Publisher :
Univ Chicago Press, Chicago, United States - Illinois
Baines, E. K., van Belle, G. T., ten Brummelaar, T. A., McAlister, H. A., Swain, M., Turner, N. H., Sturmann, L., & Sturmann, J. 2007, ApJ, 661, L195
Bakos, G. Á.,et al. 2007, ApJ, 656, 552
Bodenheimer, P., Laughlin, G., & Lin, D. N. C 2003, ApJ, 592, 555
Burke, C. J., et al. 2007, ApJ, submitted (arXiv: 0705.0003)
Burrows, A., Hubeny, I., Budaj, J., & Hubbard, W. B. 2007, ApJ, 661, 502
Burrows, A., Sudarsky, D., & Hubbard, W. B. 2003, ApJ, 594, 545
Butler, R. P., Marcy, G. W., Williams, E., Hauser, H., & Shirts, P. 1997, ApJ, 474, L115
Butler, R. P., et al. 2006, ApJ, 646, 505
Chabrier, G., & Baraffe, I. 2007, ApJ, 661, L81
Charbonneau, D., Brown, T. M., Burrows, A., & Laughlin, G. 2007, in Protostars and Planets V, ed. B. Reipurth, D. Jewitt, & K. Keil (Tucson: Univ. Arizona Press), 701
Charbonneau, D., Brown, T. M., Latham, D. W., & Mayor, M. 2000, ApJ, 529, L45
Charbonneau, D., Winn, J. N., Everett, M. E., Latham, D. W., Holman, M. J., Esquerdo, G. A., & O'Donovan, F. T. 2007, ApJ, 658, 1322
Claret, A. 2000, A&A, 363, 1081
_. 2004, A&A, 428, 1001
Collier Cameron, A. C., et al. 2007, MNRAS, 375, 951
Fabrycky, D. C., Johnson, E. T., & Goodman, J. 2007, ApJ, 665, 754
Ford, E. B. 2005, AJ, 129, 1706
Fortney, J. J., Marley, M. S., & Barnes, J. W. 2007, ApJ, 659, 1661
Gelman, A., & Rubin, D. B. 1992, Statis. Sci., 7, 457
Gillon, M., Pont, F., Moutou, C., Bouchy, F., Courbin, F., Sohy, S., & Magain, P. 2006, A&A, 459, 249
Grillmair, C. J., Charbonneau, D., Burrows, A., Armus, L., Stauffer, J., Meadows, V., Van Cleve, J., & Levine, D. 2007, ApJ, 658, L115
Guillot, T., Santos, N. C., Pont, F., Iro, N., Melo, C., & Ribas, I. 2006, A&A, 453, L21
Guillot, T., & Showman, A. P. 2002, A&A, 385, 156
Henry, G. W., Marcy, G. W., Butler, R. P., & Vogt, S. S. 2000, ApJ, 529, L41
Holman, M. J., et al. 2006, ApJ, 652, 1715
_. 2007, ApJ, 664, 1185
Knutson, H. A., Charbonneau, D., Noyes, R. W., Brown, T. M., & Gilliland, R. L. 2007a, ApJ, 655, 564
Knutson, H., et al. 2007b, Nature, 447, 183
Laughlin, G., Marcy, G. W., Vogt, S. S., Fischer, D. A., & Butler, R. P. 2005, ApJ, 629, L121
Levrard, B., Correia, A. C. M., Chabrier, G., Baraffe, I., Selsis, F., & Laskar, J. 2007, A&A, 462, L5
Mandel, K., & Agol, E. 2002, ApJ, 580, L171
Mayor, M., & Queloz, D. 1995, Nature, 378, 355
Pinfield, D. J., Hodgkin, S. T., Jameson, R. F., Cossbum, M. R., & von Hippel, T. 1997, MNRAS, 287, 180
Pont, F., et al. 2007, A&A, 465, 1069
Richardson, L. J., Doming, D., Horning, K., Seager, S., & Harrington, J. 2007, Nature, 445, 892
Seager, S., & Mallén-Ornelas, G. 2003, ApJ, 585, 1038
Showman, A. P., & Guillot, T. 2002, A&A, 385, 166
Shporer, A., Tamuz, O., Zucker, S., & Mazeh, T. 2007, MNRAS, 376, 1296
Southworth, J., Wheatley, P. J., & Sams, G. 2007, MNRAS, 379, L11
Sozzetti, A., Torres, G., Charbonneau, D., Latham, D. W., Holman, M. J., Winn, J. N., Laird, J. B., & O'Donovan, F. T. 2007, ApJ, 664, 1190
Tegmark, M., et al. 2004, Phys. Rev. D, 69, 103501
