Lick velocities of the eclipsing binary Chi-2 Hydrae

Details Lick velocities of the eclipsing binary Chi-2 Hydrae Lick velocities of the eclipsing binary Chi-2 Hydrae

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pasp...95..757p&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 95, Oct. 1983, p. 757, 758. NSF-supported research.

Astronomy and Astrophysics

Astronomy

1

B Stars, Eclipsing Binary Stars, Velocity Measurement, Spectrograms

Scientific paper

The velocities of the components of the bright late B-type eclipsing binary Chi-2 Hya derived from 19 spectrograms obtained between 1972 and 1979 are presented. They have a scale of 16.2 A/mm and are 1.0 mm wide. Circular elements derived from the velocities are given and the results are compared with those of Anderson (1975). The most striking difference in the two sets of results is in the systemic velocities. The differences in the two sets of values of K(1) and K(2) are within their combined uncertainties. The two sets of derived masses differ by about five percent. The values of the properties of the components do not require significant revision.

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