J/A+A/513/A69 HD9446 radial velocity curve (Hebrard+, 2010)
The SOPHIE search for northern extrasolar planets.
II. A multi-planet system around HD9446.
Hebrard G., Bonfils X., Segransan D., Moutou C., Delfosse X., Bouchy F.,
Boisse I., Arnold L., Desort M., Diaz R.F., Eggenberger A., Ehrenreich D.,
Forveille T., Lagrange A.-M., Lovis C., Pepe F., Perrier C., Pont F.,
Queloz D., Santos N.C., Udry S., Vidal-Madjar A.
<Astron. Astrophys. 513, A69 (2010)>
=2010A&A...513A..69H 2010A&A...513A..69H
ADC_Keywords: Planets ; Radial velocities
Keywords: planetary systems - techniques: radial velocities -
stars: individual: HD 9446
Abstract:
We report the discovery of a planetary system around HD 9446,
performed from radial velocity measurements secured with the
spectrograph SOPHIE at the 193-cm telescope of the Haute-Provence
Observatory for more than two years. At least two planets orbit this
G5V, active star: HD 9446b has a minimum mass of 0.7MJup and a
slightly eccentric orbit with a period of 30-days, whereas HD 9446c
has a minimum mass of 1.8MJup and a circular orbit with a period of
193-days. As for most of the known multiple planet systems, the
HD 9446-system presents a hierarchical disposition with a massive
outer planet and a lighter inner planet.
Description:
The table presents the SOPHIE measurements of HD9446. The three
columns are respectively the Barycentric Julian Day of the
observations, the radial velocity (in km/s) and its uncertainty (in
km/s).
Objects:
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RA (2000) DE Designation(s)
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01 33 20.2 +29 15 55 HD 9446 = HIP 7245
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 29 79 Radial velocities of HD 9446 measured with SOPHIE
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See also:
J/A+A/410/1039 : Northern extra-solar planets ELODIE survey I (Perrier+, 2003)
J/A+A/410/1051 : Northern extra-solar planets ELODIE survey II (Naef+, 2003)
J/A+A/414/351 : Northern extra-solar planets ELODIE survey III (Naef+, 2004)
J/A+A/479/271 : Northern extra-solar planets ELODIE survey IV (Correia+, 2008)
J/A+A/505/853 : HD 16760 radial velocity curve (Bouchy+, 2009)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d BJD Barycentric Julian date
15- 21 F7.4 km/s RV Radial velocity
24- 29 F6.4 km/s e_RV rms uncertainty on RV
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Acknowledgements:
Guillaume Hebrard, hebrard(at)iap.fr
References:
Bouchy et al., Paper I 2009A&A...505..853B 2009A&A...505..853B, Cat. J/A+A/505/853
(End) Patricia Vannier [CDS] 05-Mar-2010