The CRIRES Search for Planets at the Bottom of the Main Sequence

Details The CRIRES Search for Planets at the Bottom of the Main Sequence The CRIRES Search for Planets at the Bottom of the Main Sequence

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010msngr.140...41b&link_type=abstract

The Messenger, vol. 140, p. 41-45

Statistics

Methodology

2

Scientific paper

We present the first results obtained from our ongoing search for planets around very low-mass stars and brown dwarfs using radial velocities measured with the CRIRES spectrograph on the VLT. High-precision radial velocity measurements for a large sample of these previously neglected stars are enabled by observing at near-infrared wavelengths and using a new type of gas cell that we have developed. Unprecedented long-term near-infrared radial velocity precisions of ~ 5 ms-1 have been demonstrated using CRIRES with the cell. As a first scientific result, data obtained for the very low-mass star VB 10 have been used to refute a claimed planet detection based on astrometry. These results demonstrate the unique sensitivity of our methodology, and confirm its power to detect planets, including potentially habitable ones, around the most numerous stars in the Galaxy.

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