Binarity among B-stars in NGC 6231 (Raboud, 1996)

Details Binarity among B-stars in NGC 6231 (Raboud, 1996) Binarity among B-stars in NGC 6231 (Raboud, 1996)

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..33150384r&link_type=abstract

VizieR On-line Data Catalog: J/A+A/315/384. Originally published in: 1996A&A...315..384R

Physics

Binaries: Spectroscopic, Radial Velocities

Scientific paper

We have measured radial velocities for 53 B-type stars, between B1 and B9, in the young open cluster NGC 6231 through a cross-correlation technique with synthetic spectra. Two measurements for 36 stars of the sample were obtained with a time separation of about two years. We derived a minimum binary fraction of 52% in the considered population. The velocity determination precisions were simulated and we analysed their dependence upon the S/N ratios of the spectra and upon the stellar rotational velocities. We discuss the selection of the templates for the correlation. (1 data file).

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