Access to Astronomical Catalogues

← Click to display the menu
J/A+A/501/785       Discovery and characterization of WASP-6b    (Gillon+, 2009)

Discovery and characterization of WASP-6b, an inflated sub-Jupiter mass planet transiting a solar-type star. Gillon M., Anderson D.R., Triaud A.H.M.J., Hellier C., Maxted P.F.L., Pollaco D., Queloz D., Smalley B., West R.G., Wilson D.M., Bentley S.J., Collier Cameron A., Enoch B., Hebb L., Horne K., Irwin J., Joshi Y.C., Lister T.A., Mayor M., Pepe F., Parley N., Segransan D., Udry S., Wheatley P.J. <Astron. Astrophys. 501, 785 (2009)> =2009A&A...501..785G
ADC_Keywords: Binaries, eclipsing ; Planets ; Radial velocities ; Photometry Keywords: binaries: eclipsing - stars: individual: WASP-6 - planetary systems - techniques: photometric - techniques: radial velocities - techniques: spectroscopic Abstract: We report the discovery of WASP-6b, an inflated sub-Jupiter mass planet transiting every 3.3610060+0.0000022-0.0000035days a mildly metal-poor solar-type star of magnitude V=11.9. A combined analysis of the WASP photometry, high-precision followup transit photometry and radial velocities yield a planetary mass Mp=0.503+0.019-0.038 and radius Rp=1.224+0.0510.052, resulting in a density ρp=0.27±0.05ρJ. The mass and radius for the host star are M*=0.88+0.05-0.08M☉_ and R*=0.8700.025-0.036R. The non-zero orbital eccentricity e=0.054+0.018-0.015 that we measure suggests that the planet underwent a massive tidal heating ∼1Gyr ago that could have contributed to its inflated radius. High-precision radial velocities obtained during a transit allow us to measure a sky-projected angle between the stellar spin and orbital axis β=11+14-18°. In addition to similar published measurements, this result favors a dominant migration mechanism based on tidal interactions with a protoplanetary disk. Description: The host star WASP-6 was observed by WASP-South during the 2006 and 2007 observing seasons. Spectroscopic measurements were obtained using the CORALIE spectrograph mounted on the Euler Swiss telescope (La Silla, Chile) to confirm the planetary nature of the eclipsing body and measure its mass. WASP-6 was observed from 2007 September 16 to 2007 October 26 and from 2008 September 11 to 2008 September 25. 44 additional spectroscopic measurements were obtained with the HARPS spectrograph based on the 3.6-m ESO telescope (La Silla, Chile). Objects: ------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------ 23 12 37.74 -22 40 26.2 WASP-6 = WASP 6 ------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file rise1.dat 40 4167 WASP-6 deredenned and normalized differential photometry obtained by LT_RISE on 2008 July 25 rise2.dat 40 2857 WASP-6 deredenned and normalized differential photometry obtained by LT_RISE on 2008 August 11 swasp.dat 40 9630 WASP-6 deredenned and normalized differential photometry obtained by the SuperWASP survey fts.dat 40 230 WASP-6 deredenned and normalized differential photometry obtained by FTS_HawkCam2 on 2007 October 13 coralie.dat 43 35 WASP-6 radial velocities obtained by the spectrograph CORALIE harps.dat 43 44 WASP-6 radial velocities obtained by the spectrograph HARPS
Byte-by-byte Description of file: rise1.dat rise2.dat swasp.dat fts.dat
Bytes Format Units Label Explanations
1- 15 F15.7 d BJD Barycentric Julian date 18- 25 F8.6 --- Flux Flux (relative) 33- 40 F8.6 --- e_Flux ?=9 rms uncertainty on Flux
Byte-by-byte Description of file: coralie.dat harps.dat
Bytes Format Units Label Explanations
1- 14 F14.6 d BJD Barycentric Julian date 17- 24 F8.5 km/s RV Radial velocity 27- 33 F7.5 km/s e_RV rms uncertainty on RV 36- 43 F8.5 km/s Bisec Velocity from bisector technique (Queloz et al. 2001A&A...379..279Q)
Acknowledgements: Michael Gillon, Michael.Gillon (at)obs.unige.ch
(End) Patricia Vannier [CDS] 11-May-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact