Computer Science
Scientific paper
Feb 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011noao.prop..382n&link_type=abstract
NOAO Proposal ID #2011A-0382
Computer Science
Scientific paper
A comprehensive investigation of the formation and evolution of giant planets requires a thorough direct imaging search for planets around primaries of all masses. Currently, as published direct imaging surveys have focused on solar-type or more massive primaries, and since relatively few nearby young low-mass stars were known, low-mass stars are under-represented in the sample targeted by previous searches. Using a new Bayesian analysis that takes into account proper motion, sky position, chromospheric activity (Halpha and X-ray), photometry and radial-velocity, we have identified 160 new low mass (>M0) members of nearby young (<50 Myr) associations. Being young and nearby, these newly-identified members are ideal targets for direct imaging searches. We propose to observe this sample of new low-mass stars with NICI to search for self-luminous giant planets down to 2 Mjup at orbital separations of 15-500 AU. Our survey will nearly quadruple the number of young M-dwarfs probed for planets and will allow, for the first time, to place constraints on the existence of planets around low-mass stars at a level comparable to what has been done for more massive stars.
Artigau Étienne
Barman Travis
Doyon Rene
Lafreniere David
Malo Lison
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