J/A+A/563/A143 WASP-68b, WASP-73b, WASP-88b transits (Delrez+, 2014)
Transiting planets from WASP-South, Euler and TRAPPIST: WASP-68 b, WASP-73 b and
WASP-88 b, three hot Jupiters transiting evolved solar-type stars.
Delrez L., Van Grootel V., Anderson D.R., Collier-Cameron A., Doyle A.P.,
Fumel A., Gillon M., Hellier C., Jehin E., Lendl M., Neveu-VanMalle M.,
Maxted P.F.L., Pepe F., Pollacco D., Queloz D., Segransan D., Smalley B.,
Smith A.M.S., Southworth J., Triaud A.H.M.J., Udry S., West R.G.
<Astron. Astrophys. 563, A143 (2014)>
=2014A&A...563A.143D 2014A&A...563A.143D
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry ;
Radial velocities
Keywords: planetary systems - techniques: photometric -
techniques: radial velocities - techniques: spectroscopic
Abstract:
We report the discovery by the WASP transit survey of three new hot
Jupiters, WASP-68 b, WASP-73 b and WASP-88 b. WASP-68 b has a mass of
0.95±0.03MJup, a radius of 1.24-0.06+0.10RJup, and orbits a
V=10.7 G0-type star (1.24±0.03M☉, 1.69-0.06+0.11R☉,
Teff=5911±60K) with a period of 5.084298±0.000015-days. Its size is
typical of hot Jupiters with similar masses. WASP-73 b is
significantly more massive (1.88-0.06+0.07MJup) and slightly
larger (1.16-0.08+0.12RJup) than Jupiter. It orbits a V=10.5
F9-type star (1.34-0.04+0.05M☉, 2.07-0.08+0.19R☉,
Teff=6036±120K) every 4.08722±0.00022-days. Despite its high
irradiation (2.3*109erg/s/cm2), WASP-73 b has a high mean density
(1.20-0.30+0.26ρJup) that suggests an enrichment of the
planet in heavy elements. WASP-88 b is a 0.56±0.08MJup planet
orbiting a V=11.4 F6-type star (1.45±0.05M☉,
2.08-0.06+0.12R☉, Teff=6431±130K) with a period of
4.954000±0.000019-days. With a radius of 1.70-0.07+0.13RJup,
it joins the handful of planets with super-inflated radii. The ranges
of ages we determine through stellar evolution modeling are 4.5-7.0Gyr
for WASP-68, 2.8-5.7Gyr for WASP-73 and 1.8-4.3Gyr for WASP-88.
WASP-73 appears to be a significantly evolved star, close to or
already in the subgiant phase. WASP-68 and WASP-88 are less evolved,
although in an advanced stage of core H-burning.
Description:
Photometric and RV time-series obtained for the three hot Jupiters
WASP-68 b, WASP-73 b and WASP-88 b. The photometric time-series were
obtained using the TRAPPIST and Euler-Swiss telescopes. The RVs were
obtained using the Euler/CORALIE spectrograph.
Objects:
--------------------------------------------------------------------------
RA (2000) DE Designation(s) (Period)
---------------------------------------------------------------------------
20 20 22.98 -19 18 52.9 WASP-68 = 2MASS 20202298-1918528 (5.084298)
21 19 47.91 -58 08 56.0 WASP-73 = 2MASS 21194790-5808559 (4.08722)
20 38 02.70 -48 27 43.2 WASP-88 = 2MASS 20380268-4827434 (4.954000)
---------------------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
wasp68ic.dat 75 745 WASP-68 Euler Ic filter photometric time-series
wasp68iz.dat 75 3677 WASP-68 TRAPPIST I+z filter photometric time-series
rvwasp68.dat 37 43 WASP-68 RV time-series obtained by Euler/CORALIE
wasp73r.dat 75 745 WASP-73 Euler Gunn-r' filter photometric time-series
wasp73z.dat 75 1116 WASP-73 TRAPPIST z' filter photometric time-series
rvwasp73.dat 37 20 WASP-73 RV time-series obtained by Euler/CORALIE
wasp88iz.dat 75 1704 WASP-88 TRAPPIST I+z filter photometric time-series
wasp88r.dat 75 658 WASP-88 Euler Gunn-r' filter photometric time-series
rvwasp88.dat 37 23 WASP-88 RV time-series obtained by Euler/CORALIE
--------------------------------------------------------------------------------
See also:
J/A+A/547/A61 : WASP78 and WASP79 RV and photometric data (Smalley+, 2012)
J/A+A/559/A36 : Discovery of WASP-65b and WASP-75b (Gomez Maqueo Chew+, 2013)
Byte-by-byte Description of file: wasp*.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.6 d HJD UTC observation date (HJD-2450000)
13- 20 F8.6 --- RFlux Relative flux
22- 29 F8.6 --- e_RFlux Error on RFlux
31- 35 F5.2 pix dX Measured offset of the image center relative
to the first image of the run
37- 42 F6.2 pix dY Measured offset of the image center relative
to the first image of the run
44- 52 F9.6 --- AirM Airmass
54- 62 F9.6 pix FWHM Full-width Half Maximum size
64- 71 F8.3 --- bck background level (el)
73- 75 I3 s Texp [8/120] Exposure time
--------------------------------------------------------------------------------
Byte-by-byte Description of file: rvwasp68.dat rvwasp73.dat rvwasp88.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.6 d HJD UTC observation date (HJD-2450000)
13- 20 F8.5 km/s RV Radial velocity
22- 28 F7.5 km/s e_RV Error on RV
30- 37 F8.5 km/s BS Bisector span
--------------------------------------------------------------------------------
Acknowledgements:
Laetitia Delrez, ldelrez(at)ulg.ac.be
(End) Laetitia Delrez [ULg, Belgium], Patricia Vannier [CDS] 26-Jan-2014