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- W2045178726 abstract "view Abstract Citations (38) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A time-resolved spectroscopic study and modeling of the dwarf nova BVCen. Gilliland, R. L. Abstract Time-resolved observations of the double-lined, 14 hr 40 min spectroscopic binary BV Centauri are presented. The spectrum shows hydrogen emission lines from an accretion disk around the white dwarf primary and absorption lines from a late-type star of spectral class G5-8 IV-V. The reduction technique is discussed and yields the velocity amplitudes Kabs = 128 ± 3 Kems = 139 ± 9 km s-1, with a derived orbital period, P = 0d.611179. The velocity amplitudes are significantly different from previously published results. Results of stellar evolution computations are presented to better define the nature of the presumably evolved secondary in this long period system. Masses of the mass-losing secondary and accreting white dwarf are: Msec = 0.9 ± 0.1 Msun and MWD = 0.83 ± 0.1 Msun. A mass transfer rate of 5.0 ± 2.0 × 10-10 Msun yr-1 is determined from orbital and stellar evolution considerations in conjunction with observed relative component brightnesses. The secondary star probably has a small He core and has a radius at least 50% larger than that for a zero-age main-sequence star of the same mass. Publication: The Astrophysical Journal Pub Date: December 1982 DOI: 10.1086/160504 Bibcode: 1982ApJ...263..302G Keywords: Binary Stars; Dwarf Novae; Stellar Evolution; Stellar Models; Stellar Spectra; Temporal Resolution; Absorption Spectra; Late Stars; Light Curve; Mass Transfer; Radial Velocity; Stellar Mass; Astrophysics full text sources ADS | data products SIMBAD (5)" @default.
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- W2045178726 date "1982-12-01" @default.
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- W2045178726 title "A time-resolved spectroscopic study and modeling of the dwarf nova BV Centauri" @default.
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