Statistics – Computation
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..302g&link_type=abstract
Astrophysical Journal, Part 1, vol. 263, Dec. 1, 1982, p. 302-311.
Statistics
Computation
30
Binary Stars, Dwarf Novae, Stellar Evolution, Stellar Models, Stellar Spectra, Temporal Resolution, Absorption Spectra, Late Stars, Light Curve, Mass Transfer, Radial Velocity, Stellar Mass
Scientific paper
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.
No associations
LandOfFree
A time-resolved spectroscopic study and modeling of the dwarf nova BV Centauri does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A time-resolved spectroscopic study and modeling of the dwarf nova BV Centauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A time-resolved spectroscopic study and modeling of the dwarf nova BV Centauri will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-927938