Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...151..254g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 151, no. 2, Oct. 1985, p. 254-258.
Astronomy and Astrophysics
Astrophysics
7
Early Stars, Eclipsing Binary Stars, Line Spectra, Stellar Mass, Stellar Orbits, Stellar Spectra, Cross Correlation, Orbital Elements, Radial Velocity, Stellar Evolution, Stellar Spectrophotometry
Scientific paper
HD 219634 has been studied as a single-lined spectroscopic binary using photographic plate material from the Dominion Astrophysical Observatory and archival data from the David Dunlap Observatory. The orbital elements include a relatively large mass function, 0.160, which led the authors to predict and detect eclipses. Using a cross-correlation technique, the lines of the secondary component were resolved and measured on Reticon scans and the system has been reanalyzed as a double-lined spectroscopic binary. A well determined mass ratio of 2.85 is found. The system has a primary component of spectral type B0 Vn, and is potentially very important for adding to the meager data available on the masses of early-type stars.
Gulliver Austin F.
Hill Gary
Hube Douglas P.
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