Planets or Spots: tests and diagnostics in single and multi-planet systems

Details Planets or Spots: tests and diagnostics in single and multi-planet systems Planets or Spots: tests and diagnostics in single and multi-planet systems

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010eas....42..131f&link_type=abstract

EAS Publications Series, Volume 42, 2010, pp.131-135

Physics

Scientific paper

Extrasolar planet searches blossomed and prospered under the auspices of the radial velocity method. However, efficient as it is, it can misinterpret a periodic signal created by stellar phenomena as being originated from a planet. The most common of these is the presence of a cold spot, frequent in active stars. Here we review the representative cases of HD 166435, GJ 674 and TW Hya and the different methods used to pinpoint the spots' presence. We finish by underlining the importance of infrared measurements, as done in the TW Hya campaign, as a way of reducing the effect of spots on radial velocity measurements to a negligible level.

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