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ELODIE low-mass companions to solar-type stars

Published online by Cambridge University Press:  26 May 2016

D. Naef ,
M. Mayor ,
D. Queloz ,
S. Udry ,
F. Arenou ,
J.-L. Beuzit ,
C. Perrier-Bellet  and
J.-P. Sivan
D. Naef
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland
M. Mayor
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland
D. Queloz
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland
S. Udry
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland
F. Arenou
Affiliation:
DASGAL, Observatoire de Paris, F-92195 Meudon CEDEX, France
J.-L. Beuzit
Affiliation:
Observatoire de Grenoble, UJF, BP 53, F-38041 Grenoble, France
C. Perrier-Bellet
Affiliation:
Observatoire de Grenoble, UJF, BP 53, F-38041 Grenoble, France
J.-P. Sivan
Affiliation:
Observatoire de Haute–Provence, F-04870 St-Michel, France

Abstract

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We present radial-velocity measurements for three solar-type stars (HD 127506, HD 174457 and HD 185414) hosting low-mass companions. The measurements were obtained with the ELODIE echelle spectrograph mounted on the 1.93–m telescope at Observatoire de Haute–Provence (CNRS, France) within the frame of the OHP-ELODIE Planet Search Programme. The inferred minimum masses of the detected companions are in the substellar mass range. Combining ELODIE radial-velocity data and HIPPARCOS astrometric data, the inclination angles of the orbital planes of HD 127506 and HD 174457 have been derived providing us with the de-projected masses of the companions: m2 = 44MJup for the companion of HD 127506 and m2= 0.13M⊙ for the companion of HD 174457. Moreover, using adaptive optics measurements, we show that HD 174457 is probably a (F8V + M7V + M3-4V) triple system. To date, only a minimal orbital solution is available for HD 185414.

Type
Part I: Discovery and study of extrasolar planets - current
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 96 - 98
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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