2011A&A...531A..40F

Query : 2011A&A...531A..40F

2011A&A...531A..40F - Astronomy and Astrophysics, volume 531A40-40 (2011/7-1)

WASP-39b: a highly inflated Saturn-mass planet orbiting a late G-type star.

FAEDI F., BARROS S.C.C., ANDERSON D.R., BROWN D.J.A., COLLIER CAMERON A., POLLACCO D., BOISSE I., HEBRARD G., LENDL M., LISTER T.A., SMALLEY B., STREET R.A., TRIAUD A.H.M.J., BENTO J., BOUCHY F., BUTTERS O.W., ENOCH B., HASWELL C.A., HELLIER C., KEENAN F.P., MILLER G.R.M., MOULDS V., MOUTOU C., NORTON A.J., QUELOZ D., SANTERNE A., SIMPSON E.K., SKILLEN I., SMITH A.M.S., UDRY S., WATSON C.A., WEST R.G. and WHEATLEY P.J.

Abstract (from CDS):

We present the discovery of WASP-39b, a highly inflated transiting Saturn-mass planet orbiting a late G-type dwarf star with a period of 4.055259±0.000008d, Transit Epoch T0=2455342.9688±0.0002(HJD), of duration 0.1168±0.0008d. A combined analysis of the WASP photometry, high-precision follow-up transit photometry, and radial velocities yield a planetary mass of Mpl=0.28±0.03MJ and a radius of Rpl=1.27±0.04RJ, resulting in a mean density of 0.14±0.02ρJ. The stellar parameters are mass M*=0.93±0.03M☉, radius R*=0.895±0.23R☉, and age 9+3–4Gyr. Only WASP-17b and WASP-31b have lower densities than WASP-39b, although they are slightly more massive and highly irradiated planets. From our spectral analysis, the metallicity of WASP-39 is measured to be [Fe/H]=-0.12±0.1dex, and we find the planet to have an equilibrium temperature of 1116+33–32K. Both values strengthen the observed empirical correlation between these parameters and the planetary radius for the known transiting Saturn-mass planets.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: WASP-39 - techniques: photometric - techniques: radial velocities - planetary systems

VizieR on-line data: <Available at CDS (J/A+A/531/A40): table2.dat eulerlc.dat ftnlc.dat wasplc.dat>

Simbad objects: 16

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Number of rows : 16
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 BD+57 793b Pl 04 21 52.7048156328 +57 49 01.889294952           ~ 234 1
2 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 847 1
3 WASP-31b Pl 11 17 45.3578677224 -19 03 17.217631800           ~ 143 1
4 WASP-39b Pl 14 29 18.4151689656 -03 26 40.204480380           ~ 345 1
5 WASP-39 * 14 29 18.4151689656 -03 26 40.204480380   12.93 12.09 12.17 11.29 ~ 106 1
6 WASP-37 * 14 47 46.5619510032 +01 03 53.799541704   13.304 12.704 12.87 12.24 G2V 45 1
7 WASP-37b Pl 14 47 46.5619510032 +01 03 53.799541704           ~ 34 1
8 WASP-40b Pl 14 51 04.1870399712 +05 56 50.548526376           ~ 47 1
9 CD-27 10695b Pl 15 59 50.9491505016 -28 03 42.312819096           ~ 313 1
10 HD 146389b Pl 16 15 50.3653280520 +10 01 57.284258556           ~ 57 1
11 HD 149026b Pl 16 30 29.6185771608 +38 20 50.308980864           ~ 388 1
12 HD 149026 PM* 16 30 29.6185771608 +38 20 50.308980864   8.75 8.14     G0IV 267 1
13 TOI-2124b Pl 17 53 13.0489562760 +37 12 42.586493328           ~ 228 2
14 Kepler-9 Er* 19 02 17.7544327200 +38 24 03.176851896     13.9 13.791   G2 223 1
15 WASP-21 * 23 09 58.2534443016 +18 23 45.885822792   12.12 11.55 11.52   G3V 71 1
16 CD-40 15273 PM* 23 51 31.0839097560 -39 54 24.258188484   12.15 11.33 10.896 10.10 K4V 82 1

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