J/A+A/531/A60 WASP-31b photometry and radial velocities (Anderson+, 2011)
WASP-31b: a low-density planet transiting a metal-poor, late-F-type dwarf star.
Anderson D.R., Collier Cameron A., Hellier C., Lendl M., Lister T.A.,
Maxted P.F.L., Queloz D., Smalley B., Smith A.M.S., Triaud A.H.M.J.,
West R.G., Brown D.J.A., Gillon M., Pepe F., Pollacco D., Segransan D.,
Street R.A., Udry S.
<Astron. Astrophys. 531, A60 (2011)>
=2011A&A...531A..60A 2011A&A...531A..60A
ADC_Keywords: Binaries, eclipsing ; Planets ; Radial velocities ; Photometry
Keywords: binaries: eclipsing - planetary systems - stars: individual: WASP-31
Abstract:
We report the discovery of the low-density, transiting giant planet
WASP-31b. The planet is 0.48 Jupiter masses and 1.55 Jupiter radii. It
is in a 3.4-day orbit around a metal-poor, late-F-type, V=11.7 dwarf
star, which is a member of a common proper motion pair. In terms of
its low density, WASP-31b is second only to WASP-17b, which is a more
highly irradiated planet of similar mass.
Description:
The host star WASP-31 was observed by WASP-South during 2006 to 2011.
The WASP photometry was corrected for blending with a star 4.1mag
fainter, located 35arcsec away. Spectroscopic measurements were
obtained using the CORALIE spectrograph mounted on the Euler-Swiss
1.2-m telescope (La Silla, Chile) and the HARPS spectrograph mounted
on the ESO 3.6-m telescope (La Silla, Chile) to confirm the planetary
nature of the eclipsing body and to measure its mass. A total of 47
measurements were obtained by CORALIE, 1 of which fell during transit,
and 10 measurements were obtained by HARPS. The data are plotted in
Figures 1, 2 and 3.
Objects:
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RA (2000) DE Designation(s)
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11 17 45.4 -19 03 17 WASP 31 = TYC 6087-1053-1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
phot.dat 43 25007 *WASP-31 deredenned and normalised differential
survey photometry from WASP-South and follow-up
photometry from FTN/fs03 and Euler
rv.dat 57 57 WASP-31 radial velocities measured by the
CORALIE and HARPS spectrographs
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Note on phot.dat: The FTN transit (2m Faulkes Telescope North) was obtained
through a Pan-STARRS-z filter on 2010 Feb 26. The Euler transit (1.2m)
was obtained through a Gunn-r filter on 2010 Apr 15.
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See also:
J/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010)
J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009)
J/A+A/530/A5 : WASP-4b Ks-band thermal emission detection (Caceres+, 2011)
J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009)
J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)
J/A+A/501/785 : Discovery and characterization of WASP-6b (Gillon+, 2009)
J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011)
J/A+A/517/L1 : Radial velocities of WASP-8b planet (Queloz+, 2010)
J/ApJ/692/L100 : Relative photometry of WASP-10 (Johnson+, 2009)
J/A+A/528/A65 : WASP-12b transits (Maciejewski+, 2011)
J/A+A/502/391 : WASP-13b photometry and radial velocities (Skillen+, 2009)
J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009)
J/A+A/513/L3 : WASP-19b H-band thermal emission (Anderson+, 2010)
J/A+A/519/A98 : Transit of exoplanet WASP-21b (Bouchy+, 2010)
J/A+A/520/A56 : WASP-26b RV and photometric data (Smalley+, 2010)
J/A+A/526/L10 : Transits of WASP-33 (Herrero+, 2011)
J/A+A/526/A130 : WASP-34b photometry and radial velocities (Smalley+, 2011)
J/A+A/525/A54 : Transits of WASP-38b (Barros+, 2011)
Byte-by-byte Description of file: phot.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d JD Julian date
15- 22 F8.6 --- RFlux Flux (relative)
24- 32 F9.6 --- e_RFlux Uncertainty on RFlux
34- 43 A10 --- Inst Instrument used (FTN, Euler or WASP-South)
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Byte-by-byte Description of file: rv.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d JD Julian Date
16- 23 F8.5 km/s RV Radial velocity
25- 31 F7.5 km/s e_RV Radial velocity error
33- 40 F8.5 km/s FWHM Full width at half maximum of the
cross-correlation function (CCF)
42- 49 F8.5 km/s Span Bissector span velocity of the
cross-correlation function (CCF)
51- 57 A7 --- Inst Spectrograph used (CORALIE or HARPS)
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Acknowledgements:
David Anderson, dra(at)astro.keele.ac.uk
(End) Patricia Vannier [CDS] 27-May-2011