TW Hya under CRIRES light: evidence against the presence of a hot Jupiter

Details TW Hya under CRIRES light: evidence against the presence of a hot Jupiter TW Hya under CRIRES light: evidence against the presence of a hot Jupiter

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010eas....42..125f&link_type=abstract

EAS Publications Series, Volume 42, 2010, pp.125-129

Physics

1

Scientific paper

High-precision radial velocity measurements have suffered from stellar spots effects for more than one decade. With the advent of high-resolution infra-red spectrographs, one is allowed to move into a new spectral domain where the influence of these stellar phenomena on measurements is significantly reduced. We present the first results of our CRIRES campaign on TW Hya, around which a periodic optical radial velocity variation was found and attributed to a planet. Our work showed that the signal is not present in the infra-red, pointing to a cold spot instead of to a planet as the explanation for the different data sets. This campaign demonstrates the power of this new approach and shows that CRIRES can deliver high-precision radial velocity measurements. unknown author type, collab

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