WASP-40b: Independent Discovery of the 0.6 MJup Transiting Exoplanet HAT-P-27b

From WASP photometry and SOPHIE radial velocities we report the discovery of WASP-40b (HAT-P-27b), a 0.6 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 A+/- 0.11 ). The...

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Veröffentlicht in:	Publications of the Astronomical Society of the Pacific 2011, Vol.123 (903), p.555-560
Hauptverfasser:	ANDERSON, D. R, BARROS, S. C. 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, BOISSE, I, GILLON, M, MAXTED, P. F. L, MCCORMAC, J, QUELOZ, D, SIMPSON, E. K, SHILLEN, I, BOUCHY, F, COLLIER CAMERON, A, FAEDI, F, HEBRARD, G, HELLIER, C, LENDL, M, MOUTOU, C
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Earth, ocean, space Exact sciences and technology
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Zusammenfassung:	From WASP photometry and SOPHIE radial velocities we report the discovery of WASP-40b (HAT-P-27b), a 0.6 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 A+/- 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.
ISSN:	0004-6280 1538-3873