Abstract
view Abstract Citations (26) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Secondaries of eclipsing binaries. I. Detection of the secondary of Delta Librae. Tomkin, J. Abstract The secondary Ca II infrared triplet lines of the Algol-type eclipsing binary Delta Lib have been detected both during and outside of primary eclipse. Well-defined velocity curves for the primary and secondary are obtained. A primary/secondary mass ratio of 2.9 + or - 0.1 and primary and secondary masses of 4.9 + or - 0.2 and 1.7 + or - 0.2 solar masses are derived. With a main-sequence primary and an evolved, less massive secondary that fills its Roche lobe, Delta Lib is an example of an Algol system that has undergone an episode of large-scale mass transfer. The evidence for a third member of the system is discussed and found to be unconvincing. Publication: The Astrophysical Journal Pub Date: April 1978 DOI: 10.1086/156064 Bibcode: 1978ApJ...221..608T Keywords: Eclipsing Binary Stars; Radial Velocity; Stellar Spectra; Variable Stars; Abundance; Algol; Infrared Spectra; Light Curve; Line Spectra; Periodic Variations; Astronomy; Algol Systems:Radial Velocities; Eclipsing Binaries:Infrared Spectra full text sources ADS | data products SIMBAD (1) Related Materials (6) Part 2: 1979ApJ...231..495T Part 3: 1981ApJ...244..546T Part 4: 1982ApJ...263..289F Part 5: 1983ApJ...271..717T Part 6: 1985ApJ...297..250T Part 7: 1992ApJ...387..631T
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