WASP-24 b: A New Transiting Close-in Hot Jupiter Orbiting a Late F-star
| Autor: | Don Pollacco, T. A. Lister, Damian J. Christian, I. Skillen, Andrew Norton, Joao Bento, I. Todd, Michaël Gillon, E. K. Simpson, Richard G. West, B. Enoch, Eric Stempels, Coel Hellier, David R. Anderson, Pierre F. L. Maxted, S. C. C. Barros, Peter J. Wheatley, Amaury H. M. J. Triaud, Yogesh C. Joshi, A. Collier Cameron, Damien Ségransan, Stéphane Udry, N. R. Parley, Leslie Hebb, Barry Smalley, P. Cathaway-Kjontvedt, D. Queloz, Rachel Street, Francesco Pepe, É Depagne, S. J. Bentley |
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| Rok vydání: | 2010 |
| Předmět: |
Physics
010308 nuclear & particles physics Giant planet Astronomy Astronomy and Astrophysics Astrophysics Effective temperature Planetary system Surface gravity 01 natural sciences Radial velocity Space and Planetary Science Planet 0103 physical sciences Hot Jupiter 010303 astronomy & astrophysics Planetary mass |
| Zdroj: | \apj |
| DOI: | 10.1088/0004-637X/720/1/337 |
| Popis: | We report the discovery of a new transiting close-in giant planet, WASP-24 b, in a 2.341 day orbit, 0.037 AU from its F8-9 type host star. By matching the star's spectrum with theoretical models, we infer an effective temperature T-eff = 6075 +/- 100 K and a surface gravity of log g = 4.15 +/- 0.10. A comparison of these parameters with theoretical isochrones and evolutionary mass tracks places only weak constraints on the age of the host star, which we estimate to be 3.8(-1.2)(+1.3) Gyr. The planetary nature of the companion was confirmed by radial velocity measurements and additional photometric observations. These data were fit simultaneously in order to determine the most probable parameter set for the system, from which we infer a planetary mass of 1.071(-0.038)(+0.036) M-Jup and radius 1.3(-0.037)(+0.039) R-Jup. |
| Databáze: | OpenAIRE |
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