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J/A+A/528/A63       Velocitometry transit of KOI-428b        (Santerne+, 2011)

SOPHIE velocimetry of Kepler transit candidates. II. KOI-428b: a hot Jupiter transiting a subgiant F-star. Santerne A., Diaz R.F., Boucht F., Deleuil M., Moutou C., Hebrard G., Eggenberger A., Ehrenreich D., Gry C., Udry S. <Astron. Astrophys., 528A, 63-63 (2011)> =2011A&A...528..A63S
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities Keywords: techniques: spectroscopic - techniques: radial velocities - techniques: photometry - planetary systems - star: individual KOI-428b Abstract: We report the discovery of a hot Jupiter transiting a subgiant star with an orbital period of 6.87-days thanks to public photometric data from the Kepler space mission and new radial velocity observations obtained by the SOPHIE spectrograph. The planet KOI-428b with a radius of 1.17±0.04RJup and a mass of 2.2±0.4MJup, orbits around a F5IV star with R*=2.13±0.06R, M*=1.48±0.06M_☉ and Teff=6510±100K. The star KOI-428 is the largest and the most evolved star discovered so far with a transiting planet Description: The target KOI-428 was observed by Kepler during the first 33.5-day segment of the science operations (Q1) from May, 13 to June, 15, 2009 with a temporal sampling of 29.4 min. Objects: ------------------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------------------ 19 47 15.3 +47 31 36 KOI-428 = 2MASS J19471528+4731357 ------------------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 38 11 SOPHIE measurements of KOI-428
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 12 F12.4 d BJD Barycentric Julian Date of Observation 14- 18 F5.3 km/s BRV Barycentric radial velocity 20- 24 F5.3 km/s e_BRV Barycentric radial velocity uncertainty 26- 31 F6.3 km/s Span Bisector span 33- 36 F4.1 --- SNR Signal-to-noise ratio per pixel at 550nm 38 I1 --- Moon [0/1] 1 = measurements affected by scattered Moon light and corrected
Acknowledgements: Alexandre Santerne, alexandre.santerne(at)oamp.fr References: Ehrenreich et al., Paper I 2011A&A...525A..85E
(End) Patricia Vannier [CDS] 10-Feb-2011
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