[en] From WASP photometry and SOPHIE radial velocities we report the discovery of WASP-40b (HAT-P-27b), a 0.6 M planet that transits its 12th magnitude host star every 3.04 days. The host star is of late G-type or early K-type and likely has a metallicity greater than solar ([Fe/H]=0.14±0.11). The planet's mass and radius are typical of the known hot Jupiters, thus adding another system to the apparent pileup of transiting planets with periods near 3-4 days. Our parameters match those of the recent HATnet announcement of the same planet, thus giving confidence in the techniques used. We report a possible indication of stellar activity in the host star.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Anderson, D. R.
Barros, S. C. C.
Boisse, I.
Bouchy, F.
Collier Cameron, A.
Faedi, F.
Hebrard, G.
Hellier, C.
Lendl, M.
Moutou, C.
Pollacco, D.
Santerne, A.
Smalley, B.
Smith, A. M. S.
Todd, I.
Triaud, A H M J
West, R. G.
Wheatley, P. J.
Bento, J.
Enoch, B.
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Collier Cameron, A., et al. 2007, MNRAS, 380, 1230
Dhillon, V. S., et al. 2007, MNRAS, 378, 825
Enoch, B., Collier Cameron, A., Parley, N. R., & Hebb, L. 2010, A&A, 516, A33
Enoch, B., et al. 2011, MNRAS, 410, 1631
Gibson, N. P., et al. 2008, A&A, 492, 603
Gillon, M., et al. 2009, A&A, 496, 259
Gray, D. F. 2008, The Observation and Analysis of Stellar Photospheres, ed. D. F. Gray (Cambridge: Cambridge Univ. Press)
Hellier, C., et al. 2011, EPJ Web Conf. 11, Detection and Dynamics of Transiting Exoplanets, ed. F. Bouchy, R. Díaz, & C. Moutou (Provence: St. Michel l'Observatoire), 01004
Kipping, D. M., et al. 2010, ApJ, 725, 2017
Lucy, L. B., & Sweeney, M. A. 1971, AJ, 76, 544
Magain, P. 1984, A&A, 134, 189
Mandel, K., & Agol, E. 2002, ApJ, 580, L171
Marigo, P., Girardi, L., Bressan, A., Groenewegen, M. A. T., Silva, L., & Granato, G. L. 2008, A&A, 482, 883
Pepe, F., et al. 2005, Messenger, 120, 22
Perruchot, S., et al. 2008, Proc. SPIE, 7014, 17
Pollacco, D., et al. 2008, MNRAS, 385, 1576
Pollacco, D. L., et al. 2006, PASP, 118, 1407
Queloz, D., Eggenberger, A., Mayor, M., Perrier, C., Beuzit, J. L., Naef, D., Sivan, J. P., & Udry, S. 2000, A&A, 359, L13
Queloz, D., et al. 2001, A&A, 379, 279
Santos, N. C., Mayor, M., Naef, D., Pepe, F., Queloz, D., Udry, S., & Blecha, A. 2000, A&A, 361, 265
Seager, S., & Mallén-Ornelas, G. 2003, ApJ, 585, 1038
Skrutskie, M. F., et al. 2006, AJ, 131, 1163
Smalley, B., et al. 2011, A&A, 526, A130
Steele, I. A., Bates, S. D., Gibson, N., Keenan, F., Meaburn, J., Mottram, C. J., Pollacco, D., & Todd, I. 2008, Proc. SPIE, 7014, 217
