Accurate mass determination for double-lined spectroscopic binaries by digital cross-correlation spectroscopy: DM Virginis revisited.

Details Accurate mass determination for double-lined spectroscopic binaries by digital cross-correlation spectroscopy: DM Virginis revisited. Accurate mass determination for double-lined spectroscopic binaries by digital cross-correlation spectroscopy: DM Virginis revisited.

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...314..864l&link_type=abstract

Astronomy and Astrophysics, v.314, p.864-870

Astronomy and Astrophysics

Astrophysics

49

Methods: Data Analysis, Stars: Binaries: Spectroscopic, Stars: Binaries: Eclipsing, Stars: Evolution, Stars: Fundamental Parameters, Stars: Individual: Dm Vir

Scientific paper

Fundamental mass determinations in eclipsing binaries rely on radial velocities derived from double-lined spectra. We evaluate the performance of the CfA Digital Speedometers for deriving radial velocities of double-lined systems, using simulated observations of composite spectra. When XCSAO (Kurtz et al. 1992) is used to calculate a one-dimensional cross-correlation, simple fits to the double peaks in the correlation function can lead to systematic errors as large as 3km/s due to the effects of line blending. The two-dimensional correlation scheme TODCOR (Zucker & Mazeh 1994ApJ...420..806Z) can reduce the systematic errors by an order of magnitude. We apply TODCOR to a new mass determination for the F-type eclipsing binary DM Vir, achieving an accuracy of 0.6%. The improved physical properties of DM Vir agree very well with stellar evolution models incorporating the most recent opacity data, both with and without convective core overshooting, and for reasonable assumptions about the chemical composition. The age of DM Vir is found to be 1.75+/-0.20x10^9^yr, metallicity being the dominant source of uncertainty.

Affiliated with

Also associated with

No associations

Rating

Accurate mass determination for double-lined spectroscopic binaries by digital cross-correlation spectroscopy: DM Virginis revisited. 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 Accurate mass determination for double-lined spectroscopic binaries by digital cross-correlation spectroscopy: DM Virginis revisited., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accurate mass determination for double-lined spectroscopic binaries by digital cross-correlation spectroscopy: DM Virginis revisited. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1211322