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J/A+A/506/303 CoRoT-7 radial velocities (Queloz+, 2009)
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tablea1.dat
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Beginning of ReadMe :J/A+A/506/303 CoRoT-7 radial velocities (Queloz+, 2009)
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CoRoT-7 planetary system: two orbiting super-Earths.
Queloz D., Bouchy F., Moutou C., Hatzes A., Hebrard G., Alonso R.,
Auvergne M., Baglin A., Barbieri M., Barge P., Benz W., Borde P.,
Deeg H.J., Deleuil M., Dvorak R., Erikson A., Ferraz Mello S.,
Fridlund M., Gandolfi D., Gillon M., Guenther E., Guillot T., Jorda L.,
Hartmann M., Lammer H., Leger A., Llebaria A., Lovis C., Magain P.,
Mayor M., Mazeh T., Ollivier M., Patzold M., Pepe F., Rauer H., Rouan D.,
Schneider J., Segransan D., Udry S., Wuchterl G.
<Astron. Astrophys. 506, 303 (2009)>
=2009A&A...506..303Q
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ADC_Keywords: Stars, dwarfs ; Planets ; Radial velocities
Keywords: stars: planetary systems - techniques: radial velocities -
techniques: photometric - stars: activity - stars: starspots
Abstract:
We report on an intensive observational campaign carried out with
HARPS at the 3.6m telescope at La Silla on the star CoRoT-7.
Additional simultaneous photometric measurements carried out with the
Euler Swiss telescope have demonstrated that the observed radial
velocity variations are dominated by rotational modulation from cool
spots on the stellar surface. Several approaches were used to extract
the radial velocity signal of the planet(s) from the stellar activity
signal.
Description:
First, a simple pre-whitening procedure was employed to find and
subsequently remove periodic signals from the complex frequency
structure of the radial velocity data. The dominant frequency in the
power spectrum was found at 23 days, which corresponds to the rotation
period of CoRoT-7. The 0.8535 day period of CoRoT-7b planetary
candidate was detected with an amplitude of 3.3m/s.
Objects:
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RA (2000) DE Designation(s)
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06 43 49.5 -01 03 47 CoRoT-7 = CoRoT-Exo-7
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