WASP-42 b and WASP-49 b: two new transiting sub-Jupiters

[en] We report the discovery of two new transiting planets from the WASP survey. WASP-42 b is a 0.500 +- 0.035 M_J planet orbiting a K1 star at a separation of 0.0548 +- 0.0017 AU with a period of 4.9816872 +- 0.0000073 days. The radius of WASP-42 is 1.080 +- 0.057 R_J while its equilibrium temperature is T_eq = 995 +- 34 K. We detect some evidence of a small but non-zero eccentricity of e = 0.060 +- 0.013. WASP-49 b is a 0.378 +- 0.027 M_J planet around an old G6 star. It has a period of 2.7817387 +- 5.6 x 10-6 days and a separation of 0.0379 +- 0.0011 AU. This planet is slightly bloated, having a radius of 1.115 +- 0.056 R_J and an equilibrium temperature of T_eq = 1369 +- 42 K. Both planets have been followed up intensively in photometry, in total we have obtained 5 full and one partial transit light curves of WASP-42 and 4 full and one partial light curves of WASP-49 using the Euler-Swiss, TRAPPIST and Faulkes South telescopes.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Lendl, M

Anderson, D R

Collier-Cameron, A

Doyle, A P

Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image

Hellier, C

Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image

Lister, T A

Maxted, P F L

Pepe, F

More authors (9 more)

Language :

English

Title :

WASP-42 b and WASP-49 b: two new transiting sub-Jupiters

Publication date :

01 August 2012

Journal title :

Astronomy and Astrophysics

ISSN :

0004-6361

eISSN :

1432-0746

Publisher :

EDP Sciences, Les Ulis, France

Volume :

544

Pages :

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://adsabs.harvard.edu/abs/2012arXiv1205.2757L

Available on ORBi :

since 06 June 2012

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Anderson, D. R., Hellier, C., Gillon, M., et al. 2010, ApJ, 709, 159
Anderson, D. R., Smith, A.M. S., Lanotte, A. A., et al. 2011, MNRAS, 416, 2108
Bakos, G., Noyes, R. W., Kovács, G., et al. 2004, PASP, 116, 266
Baranne, A., Queloz, D., Mayor, M., et al. 1996, A&AS, 119, 373
Barnes, S. A. 2007, ApJ, 669, 1167
Batygin, K., & Stevenson, D. J. 2010, ApJ, 714, L238
Bertin, E. 2006, in Astronomical Data Analysis Software and Systems XV, eds. C. Gabriel, C. Arviset, D. Ponz, & S. Enrique, ASP Conf. Ser., 351, 112
Bertin, E., & Arnouts, S. 1996, A&AS, 117, 393
Bodenheimer, P., Lin, D. N. C., & Mardling, R. A. 2001, ApJ, 548, 466
Burrows, A., Hubeny, I., Budaj, J., & Hubbard, W. B. 2007, ApJ, 661, 502
Carlin, B., & Louis, T. 2009, Bayesian methods for data analysis, Texts in statistical science (CRC Press)
Chabrier, G., & Baraffe, I. 2007, ApJ, 661, L81
Claret, A., & Bloemen, S. 2011, A&A, 529, A75
Collier Cameron, A., Pollacco, D., Street, R. A., et al. 2006, MNRAS, 373, 799
Collier Cameron, A., Wilson, D. M., West, R. G., et al. 2007, MNRAS, 380, 1230
Demory, B.-O., & Seager, S. 2011, ApJS, 197, 12
Eggleton, P. P., & Kiseleva-Eggleton, L. 2001, ApJ, 562, 1012
Enoch, B., Collier Cameron, A., Parley, N. R., & Hebb, L. 2010, A&A, 516, A33
Enoch, B., Cameron, A. C., Anderson, D. R., et al. 2011, MNRAS, 410, 1631
Enoch, B., Collier Cameron, A., & Horne, K. 2012, A&A, 540, A99
Fabrycky, D., & Tremaine, S. 2007, ApJ, 669, 1298
Faedi, F., Barros, S. C. C., Anderson, D. R., et al. 2011, A&A, 531, A40
Ford, E. B., & Rasio, F. A. 2006, ApJ, 638, L45
Fortney, J. J., Marley, M. S., & Barnes, J. W. 2007, ApJ, 659, 1661
Fortney, J. J., Demory, B.-O., Désert, J.-M., et al. 2011, ApJS, 197, 9
Gelman, A., & Rubin, D. 1992, Statist. Sci., 7, 457
Gillon, M., Smalley, B., Hebb, L., et al. 2009, A&A, 496, 259
Gillon, M., Lanotte, A. A., Barman, T., et al. 2010, A&A, 511, A3
Gillon, M., Jehin, E., Magain, P., et al. 2011, Detection and Dynamics of Transiting Exoplanets, St. Michel l'Observatoire, France, eds. F. Bouchy, R. Díaz, & C. Moutou, EpJ Web Conf., 11, 6002
Gillon, M., Triaud, A. H. M. J., Fortney, J. J., et al. 2012, A&A, 542, A4
Giménez, A. 2006, ApJ, 650, 408
Goldreich, P., & Tremaine, S. 1980, ApJ, 241, 425
Gray, D. F. 2008, The Observation and Analysis of Stellar Photospheres
Hartman, J. D., Bakos, G. Á., Torres, G., et al. 2011, ApJ, 742, 59
Hébrard, G., Bouchy, F., Pont, F., et al. 2008, A&A, 488, 763
Holman, M. J., Winn, J. N., Latham, D. W., et al. 2006, ApJ, 652, 1715
Jehin, E., Gillon, M., Queloz, D., et al. 2011, The Messenger, 145, 2
Kozai, Y. 1962, AJ, 67, 591
Laughlin, G., Crismani, M., & Adams, F. C. 2011, ApJ, 729, L7
Lin, D. N. C., Bodenheimer, P., & Richardson, D. C. 1996, Nature, 380, 606
Lovis, C., Dumusque, X., Santos, N. C., et al. 2011 arXiv:1107.5325
Lucy, L. B., & Sweeney, M. A. 1971, AJ, 76, 544
Magain, P. 1984, A&A, 134, 189
Mamajek, E. E., & Hillenbrand, L. A. 2008, ApJ, 687, 1264
Mandel, K., & Agol, E. 2002, ApJ, 580, L171
Marigo, P., Girardi, L., Bressan, A., et al. 2008, A&A, 482, 883
Matsumura, S., Peale, S. J., & Rasio, F. A. 2010, ApJ, 725, 1995
Maxted, P. F. L., Anderson, D. R., Collier Cameron, A., et al. 2011, PASP, 123, 547
Mayor, M., & Queloz, D. 1995, Nature, 378, 355
Mayor, M., Pepe, F., Queloz, D., et al. 2003, The Messenger, 114, 20
McLaughlin, D. B. 1924, ApJ, 60, 22
Noyes, R. W., Hartmann, L. W., Baliunas, S. L., Duncan, D. K., & Vaughan, A. H. 1984, ApJ, 279, 763
Pollacco, D. L., Skillen, I., Collier Cameron, A., et al. 2006, PASP, 118, 1407
Pont, F., Zucker, S., & Queloz, D. 2006, MNRAS, 373, 231
Queloz, D., Henry, G. W., Sivan, J. P., et al. 2001, A&A, 379, 279
Rasio, F. A., & Ford, E. B. 1996, Science, 274, 954
Rossiter, R. A. 1924, ApJ, 60, 15
Sato, B., Fischer, D. A., Henry, G. W., et al. 2005, ApJ, 633, 465
Schwarz. 1978, Ann. Stat., 6, 461
Seager, S., & Mallén-Ornelas, G. 2003, ApJ, 585, 1038
Sestito, P., & Randich, S. 2005, A&A, 442, 615
Showman, A. P., & Guillot, T. 2002, A&A, 385, 166
Torres, G., Andersen, J., & Giménez, A. 2010, A&ARv, 18, 67
Triaud, A. H. M. J., Collier Cameron, A., Queloz, D., et al. 2010, A&A, 524, A25
Winn, J. N., Holman, M. J., Torres, G., et al. 2008, ApJ, 683, 1076
Winn, J. N., Johnson, J. A., Howard, A. W., et al. 2010, ApJ, 723, L223
Wu, Y., & Murray, N. 2003, ApJ, 589, 605
Wu, Y., Murray, N. W., & Ramsahai, J. M. 2007, ApJ, 670, 820