J/A+A/526/A130 WASP-34b photometry and radial velocities (Smalley+, 2011)
WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a
hierarchical triple.
Smalley B., Anderson D.R., Collier Cameron A., Hellier C., Lendl M.,
Maxted P.F.L., Queloz D., Triaud A.H.M.J., West R.G., Bentley S.J.,
Enoch B., Gillon M., Lister T.A., Pepe F., Pollacco D.L., Segransan D.,
Smith A.M.S., Southworth J., Udry S., Wheatley P.J., Wood P.L., Bento J.
<Astron. Astrophys. 526, A130 (2011)>
=2011A&A...526A.130S 2011A&A...526A.130S
ADC_Keywords: Stars, G-type ; Planets ; Radial velocities ; Photometry, CCD
Keywords: planets and satellites: general - stars: individual: WASP-34 -
techniques: photometric - techniques: spectroscopic -
techniques: radial velocities
Abstract:
We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet
transiting its 10.4-magnitude solar-type host star (1SWASP
J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly
eccentric orbit (e=0.038±0.012). We find a planetary mass of
0.59±0.01MJup and radius of 1.22+0.11-0.08R_Jup. There
is a linear trend in the radial velocities of 55±4m/s/y indicating
the presence of a long-period third body in the system with a mass
>0.45MJup at a distance of >1.2AU from the host star. This
third-body is either a low-mass star, white dwarf, or another planet.
The transit depth ((RP/R*)2=0.0126) and high impact parameter
(b=0.90) suggest that this could be the first known transiting
exoplanet expected to undergo grazing transits, but with a confidence
of only ∼80%.
Description:
File table1 contains the Radial velocity and line bisector span
measurements of WASP-34 obtained using the CORALIE spectrograph. Files
euler1.dat and euler2.dat contain the RG band transit photometry
obtained using the Euler Telescopes observed on 2010 March 3 and 2010
April 12, respectively.
Objects:
---------------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------------
11 01 35.9 -23 51 38 WASP-34 = TYC 6636-540-1
---------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 41 24 Radial velocity and line bisector spans
euler1.dat 29 114 Euler Telescope photometry 2010 March 3
euler2.dat 29 147 Euler Telescope photometry 2010 April 12
--------------------------------------------------------------------------------
See also:
J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009)
J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 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/517/L1 : Radial velocities of WASP-8b planet (Queloz+, 2010)
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 exoplanet 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/525/A54 : Transits of WASP-38b (Barros+, 2011)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 F14.6 d HJD Julian Date of Observation
16- 23 F8.5 km/s HRV Heliocentric Radial velocity
25- 32 F8.5 km/s e_HRV Error on Heliocentric Radial velocity
34- 41 F8.5 km/s Vspan Line bisector span
--------------------------------------------------------------------------------
Byte-by-byte Description of file: euler1.dat euler2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.5 d HJD Julian Date of Observation
15- 21 F7.4 mag DRmag Relative magnitude (RG band)
23- 29 F7.4 mag e_DRmag Error on Relative magnitude
--------------------------------------------------------------------------------
Acknowledgements:
Barry Smalley, bs(at)astro.keele.ac.uk
(End) Patricia Vannier [CDS] 13-Dec-2010