2008A&A...485..871G


Query : 2008A&A...485..871G

2008A&A...485..871G - Astronomy and Astrophysics, volume 485, 871-875 (2008/7-3)

Improved parameters for the transiting planet HD17156b: a high-density giant planet with a very eccentric orbit.

GILLON M., TRIAUD A.H.M.J., MAYOR M., QUELOZ D., UDRY S. and NORTH P.

Abstract (from CDS):

We report high-precision transit photometry for the recently detected planet HD17156b. Using these new data with previously published transit photometry and radial velocity measurements, we perform a combined analysis based on a Markov Chain Monte Carlo approach. The resulting mass Mp=3.09+0.22–0.17MJup and radius Rp=1.23+0.17–0.20RJup for the planet places it at the outer edge of the density distribution of known transiting planets with ρp=1.66+1.37–0.60ρJup. The obtained transit ephemeris is TTr=2454438.48271+0.00077–0.00057+Nx21.21747+0.00070–0.00067BJD. The derived plausible tidal circularization time scales for HD17156b are larger than the age of the host star. The measured high orbital eccentricity e=0.6719+0.0052–0.0063 can thus not be interpreted as the clear sign of the presence of another body in the system.

Abstract Copyright:

Journal keyword(s): binaries: eclipsing - planetary systems - stars: individual: HD17156 - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/485/871): table.dat>

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 BD+71 168 * 02 48 44.2731537048 +71 48 01.545214176   9.57 9.47     B8 5 0
2 HD 17156 PM* 02 49 44.4871034544 +71 45 11.629235988   8.78 8.16     F9V 178 2
3 HD 17156b Pl 02 49 44.4871034544 +71 45 11.629235988           ~ 184 1
4 BD+57 793b Pl 04 21 52.7048156328 +57 49 01.889294952           ~ 218 1
5 Ross 905b Pl 11 42 11.0933350978 +26 42 23.650782778           ~ 815 1
6 HD 147506b Pl 16 20 36.3576063720 +41 02 53.106772488           ~ 254 1
7 CoRoT-2b Pl 19 27 06.4944378024 +01 23 01.359897468           ~ 237 1

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