Comprehensive statistics of multiple stars

Details Comprehensive statistics of multiple stars Comprehensive statistics of multiple stars

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010noao.prop...22t&link_type=abstract

NOAO Proposal ID #2010B-0022

Physics

Optics

Scientific paper

Formation of binary and multiple stars remains a subject of active work where progress has been achieved recently through large-scale hydrodynamical simulations. Reliable statistics of multiplicities higher than two are still missing for comparisons with theory. We will establish the true fractions of triple and quadruple systems in the nearby stellar population and derive un-biased distributions of their periods and mass ratios. The input catalog of 5040 stars is based on Hipparcos. A subset of this sample (southern visual and spectroscopic binaries) will be monitored in radial velocity to cover the parameter space missed by other surveys. Final results will be obtained by invoking other published data and by complementary observations with adaptive optics.

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