Detection of the secondary of Algol
1978; IOP Publishing; Volume: 222; Linguagem: Inglês
10.1086/182705
ISSN1538-4357
Autores Tópico(s)Astronomy and Astrophysical Research
Resumoview Abstract Citations (52) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Detection of the secondary of Algol. Tomkin, J. ; Lambert, D. L. Abstract The first spectroscopic detection of Algol B is reported. The Na D lines of the secondary of Algol are identified on low-noise spectra, and measurements of these lines are used to determine the primary/secondary mass ratio as well as the individual masses of Algol A, B, and C. Solutions for the orbital elements yield values of 201 (+ or 6) km/s for the semiamplitude of the Algol B velocity curve and -9 (+ or - 11) km/s for the systemic velocity, in addition to a primary/secondary mass ratio of 4.6 + or - 0.1. The masses of Algol A, B, and C are estimated to be approximately 3.7, 0.81, and 1.7 solar masses, respectively. It is concluded that Algol B fills its Roche lobe and that mass transfer from Algol B to Algol A could explain the radio and X-ray emission from this eclipsing binary system. Publication: The Astrophysical Journal Pub Date: June 1978 DOI: 10.1086/182705 Bibcode: 1978ApJ...222L.119T Keywords: Companion Stars; D Lines; Eclipsing Binary Stars; Stellar Spectrophotometry; Sodium; Stellar Mass; Astronomy; Algol:Mass full text sources ADS | data products SIMBAD (1)
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