Details On 10 New Wide Common Proper Motion Pairs Containing An Ultracool Dwarf

Details Details On 10 New Wide Common Proper Motion Pairs Containing An Ultracool Dwarf Details On 10 New Wide Common Proper Motion Pairs Containing An Ultracool Dwarf

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21360103f&link_type=abstract

American Astronomical Society, AAS Meeting #213, #601.03

Mathematics

Probability

Scientific paper

We report the discovery of 10 wide stellar companions to known late-type M, L, and T dwarfs deduced from common proper motion. Four of these objects have been independently reported in the literature. Applying age diagnostic tools to the primary stars, we assume co-evality and infer masses for the ultracool dwarf (UCD) secondaries. We classify four objects as stellar, two as substellar, and four could not be distinguished.
Two of the ten wide UCD companions are also tight binaries. This result is consistent with a higher binary fraction amongst UCDs widely separated from a stellar companion as reported in recent studies. We find the system containing the T6.5 dwarf SDSS J1758+4633 has a high probability of membership in the 0.5-3.0 Gyr Hyades supercluster and the system containing the close binary system 2MASS J0915+0422 has a high probability of membership in the 100-300 Myr Castor moving group. We have uncovered a widely separated ( 780 AU) near equal mass binary containing an M6 primary and an L0 secondary. Based on age diagnostics we conclude that this system is stellar making it one of only a handful of older field systems containing two widely separated nearly equal low mass stars.

Affiliated with

Also associated with

No associations

Rating

Details On 10 New Wide Common Proper Motion Pairs Containing An Ultracool Dwarf does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Details On 10 New Wide Common Proper Motion Pairs Containing An Ultracool Dwarf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Details On 10 New Wide Common Proper Motion Pairs Containing An Ultracool Dwarf will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1765462