2009ApJ...693.1920H

Query : 2009ApJ...693.1920H

2009ApJ...693.1920H - Astrophys. J., 693, 1920-1928 (2009/March-2)

WASP-12b: the hottest transiting extrasolar planet yet discovered.

HEBB L., COLLIER CAMERON A., LOEILLET B., POLLACCO D., HEBRARD G., STREET R.A., BOUCHY F., STEMPELS H.C., MOUTOU C., SIMPSON E., UDRY S., JOSHI Y.C., WEST R.G., SKILLEN I., WILSON D.M., McDONALD I., GIBSON N.P., AIGRAIN S., ANDERSON D.R., BENN C.R., CHRISTIAN D.J., ENOCH B., HASWELL C.A., HELLIER C., HORNE K., IRWIN J., LISTER T.A., MAXTED P., MAYOR M., NORTON A.J., PARLEY N., PONT F., QUELOZ D., SMALLEY B. and WHEATLEY P.J.

Abstract (from CDS):

We report on the discovery of WASP-12b, a new transiting extrasolar planet with Rpl= 1.79+0.09–0.09RJ and Mpl= 1.41+0.10–0.10 MJ. The planet and host star properties were derived from a Monte Carlo Markov Chain analysis of the transit photometry and radial velocity data. Furthermore, by comparing the stellar spectrum with theoretical spectra and stellar evolution models, we determined that the host star is a supersolar metallicity ([M/H] = 0.3+0.05–0.15), late-F (Teff= 6300+200–100 K) star which is evolving off the zero-age main sequence. The planet has an equilibrium temperature of Teq= 2516 K caused by its very short period orbit (P = 1.09 days) around the hot, twelfth magnitude host star. WASP-12b has the largest radius of any transiting planet yet detected. It is also the most heavily irradiated and the shortest period planet in the literature.

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Journal keyword(s): planetary systems - techniques: photometric - techniques: radial velocities

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 WASP-1b Pl 00 20 40.0745768856 +31 59 23.954809596           ~ 134 1
2 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 847 1
3 WASP-12 * 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 358 1
4 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
5 NAME OGLE-TR-132b Pl 10 50 34.5943868112 -61 57 26.138690064           ~ 105 1
6 NAME OGLE-TR-56b Pl 17 56 35.5016678064 -29 32 21.479240220           ~ 202 1
7 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 991 1
8 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 2037 1
9 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1193 1

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