J/A+A/544/L12 Velocitometry transit of KOI-13 (Santerne+, 2012)
SOPHIE velocimetry of Kepler transit candidates.
VII. An additional companion in the KOI-13 system.
Santerne A., Moutou C., Barros S.C.C., Damiani C., Diaz R.F., Deleuil J.-M.,
Hebrard G.
<Astron. Astrophys. 544, L12 (2012)>
=2012A&A...544L..12S 2012A&A...544L..12S
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities
Keywords: planetary systems - techniques: radial velocities -
techniques: spectroscopic
Abstract:
We report the discovery of a new stellar companion in the KOI-13
system. KOI-13 is composed of two fast-rotating A-type stars of
similar magnitude. One of these two stars hosts a transiting planet
discovered by Kepler. We obtained new radial velocity measurements
using the SOPHIE spectrograph at the Observatoire de Haute-Provence
that reveal an additional companion in this system. This companion has
a mass of between 0.4M☉ and 1M☉ and orbits one of the two
main stars with a period of 65.831±0.029-days and an eccentricity of
0.52±0.02.
Description:
We performed spectroscopic observations of the KOI-13 system with the
SOPHIE spectrograph mounted on the 1.93-m telescope at Observatoire de
Haute-Provence, France. We acquired 17 high resolution spectra from
2011, March 25 to 2012, May 231 using the high efficiency mode
(R∼39000 at 550nm) of SOPHIE and the fast CCD read-out mode
Objects:
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RA (2000) DE Designation(s)
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19 07 53.11 +46 52 06.0 KOI-13 = BD+46 2629
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 17 SOPHIE radial velocity data
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See also:
J/A+A/528/A63 : Velocitometry transit of KOI-428b (Santerne+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d BJD Barycentric Julian Date of observation
15- 20 F6.3 km/s BRVa Barycentric radial velocity of KOI-13α
22- 26 F5.3 km/s e_BRVa rms uncertainty on BRVa
28- 33 F6.3 km/s BRVb Barycentric radial velocity of KOI-13β
35- 39 F5.3 km/s e_BRVb rms uncertainty on BRVb
41- 44 I4 s Texp Exposure Time
46- 50 F5.1 --- SNR Signal-to-noise ratio per pixel at 550nm
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Acknowledgements:
Alexandre Santerne, Alexandre.Santerne(at)oamp.fr
References:
Ehrenreich et al., Paper I 2011A&A...525A..85E 2011A&A...525A..85E
Santerne et al., Paper II 2011A&A...528A..63S 2011A&A...528A..63S, Cat. J/A+A/528/A63
Bouchy et al., Paper III 2011A&A...533A..83B 2011A&A...533A..83B
Santerne et al., Paper IV 2011A&A...536A..70S 2011A&A...536A..70S
Bonomo et al., Paper V 2012A&A...538A..96B 2012A&A...538A..96B
(End) Patricia Vannier [CDS] 02-Aug-2012