Mathematics – Probability
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934513d&link_type=abstract
American Astronomical Society, AAS Meeting #219, #345.13
Mathematics
Probability
Scientific paper
As the only all-sky infrared survey since 2MASS, WISE presents the first opportunity to search for low mass companions using common proper motion. We have searched around stars from the LSPM-north and LSPM-south catalogues of stars with proper motions larger than 0.15 seconds of arc per year, comparing the 2MASS and WISE positions of all sources within 1 minute of arc. As a result we have discovered 11 new very-low-mass, wide companions to LSPM stars, with a very low probability of these being the result of a chance alignment. Our search has also recovered 5 previously known very-low-mass companions. Our search for common proper motion companions to high proper motion stars now extends over 57% of the sky. Infrared colors suggest the companions are M8-M9 dwarfs, near the hydrogen-burning limit; spectroscopic observations will be required for formal spectral classification of the companions.
Dutcher Daniel P.
Faherty Jackie
Lepine Sebastien
Mennen A. C.
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