Abstract
view Abstract Citations (128) References (60) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Frequency and Formation Mechanism of B2--B5 Main-Sequence Binaries Abt, Helmut A. ; Gomez, Ana E. ; Levy, Saul G. Abstract Twenty coude spectra were obtained for each of the 74 B2-B5 IV or V stars, and the results of their radial velocities were combined with those of a previous study of 42 similar stars, to examine the frequency and the formation mechanism of these binaries. New improved orbital elements are listed for nine known double-lined and 26 single-lined spectroscopic binaries. It is found that, systems with periods of 0.01 yr to 100,000 yrs, have secondary frequencies that fit the Salpeter (1955) luminosity function (but not the van Rhijn function), indicating that these systems were formed primarily by capture. For systems with periods shorter than 0.01 yr, the separations of components are only a few stellar radii, suggesting that these systems have undergone mass transfer; their secondary masses have no direct information concerning the formation mechanism. Publication: The Astrophysical Journal Supplement Series Pub Date: October 1990 DOI: 10.1086/191508 Bibcode: 1990ApJS...74..551A Keywords: B Stars; Binary Stars; Main Sequence Stars; Star Formation; Stellar Mass; Stellar Orbits; Stellar Spectra; Astrophysics; STARS: BINARIES; STARS: EARLY-TYPE; STARS: FORMATION; STARS: STELLAR STATISTICS; STARS: VISUAL MULTIPLES full text sources ADS | data products SIMBAD (74)
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