[en] We report the detection of a 0.6 M-J extrasolar planet by WASP-South, WASP-25b, transiting its solar-type host star every 3.76d. A simultaneous analysis of the WASP, FTS and Euler photometry and CORALIE spectroscopy yields a planet of R[SUB]p[/SUB] = 1.22 R[SUB]J[/SUB] and M[SUB]p[/SUB] = 0.58 M[SUB]J[/SUB] around a slightly metal-poor solar-type host star, [Fe/H] = - 0.05 +/- 0.10, of R[SUB]*[/SUB] = 0.92 R[SUB]solar[/SUB] and M[SUB]*[/SUB] = 1.00 M[SUB]solar[/SUB]. WASP-25b is found to have a density of ρ[SUB]p[/SUB] = 0.32 ρ[SUB]J[/SUB], a low value for a sub-Jupiter mass planet. We investigate the relationship of planetary radius to planetary equilibrium temperature and host star metallicity for transiting exoplanets with a similar mass to WASP-25b, finding that these two parameters explain the radii of most low-mass planets well.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Enoch, B.; School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS
Cameron, A Collier; School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS
Anderson, D. R.; Astrophysics Group, Keele University, Staffordshire ST5 5BG
Lister, T. A.; Las Cumbres Observatory, 6740 Cortona Drive Suite 102, Goleta, CA 93117, USA
Hellier, C.; Astrophysics Group, Keele University, Staffordshire ST5 5BG
Maxted, P. F. L.; Astrophysics Group, Keele University, Staffordshire ST5 5BG
Queloz, D.; Observatoire astronomique de l'Universitén de Genéve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Smalley, B.; Astrophysics Group, Keele University, Staffordshire ST5 5BG
Triaud, A H M J; Observatoire astronomique de l'Universitén de Genéve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
West, R. G.; Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH
Brown, D. J. A.; School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Hebb, L.; Vanderbilt University, Department of Physics and Astronomy, Nashville, TN 37235, USA
Lendl, M.; Observatoire astronomique de l'Universitén de Genéve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Parley, N.; School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS
Pepe, F.; Observatoire astronomique de l'Universitén de Genéve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Pollacco, D.; Astrophysics Research Centre, School of Mathematics & Physics, Queen's University, University Road, Belfast BT7 1NN
Segransan, D.; Observatoire astronomique de l'Universitén de Genéve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
Simpson, E.; Astrophysics Research Centre, School of Mathematics & Physics, Queen's University, University Road, Belfast BT7 1NN
Street, R. A.; Las Cumbres Observatory, 6740 Cortona Drive Suite 102, Goleta, CA 93117, USA
Udry, S.; Observatoire astronomique de l'Universitén de Genéve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland
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Bibliography
Anderson D. R. et al., 2010, ApJ, 709, 159
Bakos G. Á. et al., 2007, ApJ, 656, 552
Baranne A. et al., 1996, A&AS, 119, 373
Bodenheimer P., Laughlin G., Lin D. N. C., 2003, ApJ, 592, 555
Bouchy F. et al., 2010, A&A, 519, 98
Burrows A., Hubeny I., Budaj J., Hubbard W. B., 2007, ApJ, 661, 502
Carter J. A., Winn J. N., Gilliland R., Holman M. J., 2009, ApJ, 696, 241
Castelli F., Gratton R. G., Kurucz R. L., 1997, A&A, 318, 841
Charbonneau D., Brown T. M., Latham D. W., Mayor M., 2000, ApJ, 529, L45
Charbonneau D., Brown T. M., Noyes R. W., Gilliland R. L., 2002, ApJ, 568, 377
Collier Cameron A. et al., 2007, MNRAS, 380, 1230
Enoch B., Cameron A. C., Parley N. R., Hebb L. H., 2010, A&A, 516, 33
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