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Bisector analysis as a diagnostic of intrinsic radial-velocity variations

Published online by Cambridge University Press:  26 May 2016

N. C. Santos ,
M. Mayor ,
D. Naef ,
D. Queloz  and
S. Udry
N. C. Santos
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
M. Mayor
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
D. Naef
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
D. Queloz
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
S. Udry
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland

Abstract

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In this contribution we present the results of the application of the bisector of the cross-correlation function as a diagnostic of activity-related radial-velocity variations. The results show that the technique is very effective. We present examples for which the application of the bisector analysis was essential to establish the planetary nature of the candidate or to exclude an orbital signature. An analysis of the behaviour of the bisector for active dwarfs of different spectral types shows that the relation between the bisector and the radial-velocity variation depends in a great extent on the v sin i of the star. The results may shed a new light on the intrinsic sources of radial-velocity variation for different types of solar-type dwarfs.

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. 121 - 123
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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