Bisector analysis as a diagnostic of intrinsic radial-velocity variations

  • Santos N
  • Mayor M
  • Naef D
  • et al.
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Abstract

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.

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Santos, N. C., Mayor, M., Naef, D., Queloz, D., & Udry, S. (2004). Bisector analysis as a diagnostic of intrinsic radial-velocity variations. Symposium - International Astronomical Union, 202, 121–123. https://doi.org/10.1017/s007418090021766x

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