The importance of wide-system studies for stellar evolution and galactic dynamics

Details The importance of wide-system studies for stellar evolution and galactic dynamics The importance of wide-system studies for stellar evolution and galactic dynamics

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss..99...23d&link_type=abstract

(International Astronomical Union, Colloquium on Double Stars, Physical Properties and Generic Relations, 80th, Bandung, Indones

Astronomy and Astrophysics

Astrophysics

5

Binary Stars, Stellar Evolution, Stellar Motions, Astrometry, Galactic Evolution, Stellar Mass Ejection, Stellar Structure, Visual Observation

Scientific paper

Observational data on wide binary systems in the Galaxy are examined statistically and discussed in terms of theories of binary formation and evolution. Direct-formation and formation-by-capture theories are rejected in favor of a model in which close binaries evolve to wide binaries via mass loss. Hence better understanding of wide binaries is found necessary for theories of binary formation and Galactic dynamics. A thorough census of nonorbital pairs within 20-25 pc of the sun is identified as a primary goal, and the use of space observatories such as Hipparchos is suggested.

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