MARVELS: The Multi-Object APO Radial Velocity Survey. First Results from the Pilot Program

Details MARVELS: The Multi-Object APO Radial Velocity Survey. First Results from the Pilot Program MARVELS: The Multi-Object APO Radial Velocity Survey. First Results from the Pilot Program

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.2902m&link_type=abstract

American Astronomical Society, DPS meeting #39, #29.02; Bulletin of the American Astronomical Society, Vol. 39, p.466

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first results from the pilot program stage of the MARVELS precision radial velocity survey using the Keck-ET instrument. This instrument is a dispersed fixed delay interferometer coupled to a spectrograph and is capable of acquiring precise radial velocities for 60 objects simultaneously in the 3 degree field of view of the Sloan telescope. During the pilot program we have acquired 10-30 precise radial velocity (10-100 m/s precision) observations of over 400 TYCHO-2 stars over a six month period, allowing us to detect companions and constrain orbital parameters for a number of stars. We also present results of instrument stability using observations of day sky, and velocity results on known stable and planet-bearing stars present in the survey fields. Significant improvements in stability and precision are expected due to planned instrument and software upgrades in the near future. With these improvements in place, the MARVELS survey will be sensitive enough to detect giant planets in short and intermediate period orbits. Over its lifetime MARVELS will be able to detect 200 exoplanets around the 10000 main-sequence and giant stars efficiently surveyed (7.6

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