Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...171..123h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 171, no. 1-2, Jan. 1987, p. 123-130.
Astronomy and Astrophysics
Astrophysics
13
Binary Stars, Early Stars, Orbit Calculation, Stellar Magnitude, Stellar Orbits, Variable Stars, Apsides, Mass To Light Ratios, Orbital Elements, Roche Limit, Stellar Evolution, Stellar Spectrophotometry
Scientific paper
The spectroscopic orbits for the primary and secondary components of V 373 Cas have been redetermined by cross-correlation techniques. The new masses and orbital elements are significantly better than those previously determined. An attempt to derive a self-consistent model has only been semisuccessful and will necessitate more observations, both photometric and spectroscopic. Apsidal motion may be detectable but this also will require more observations. The primary component is highly evolved and should be close to the Roche limiting surface at periastron; the secondary is anomalous in that it is underluminous for its mass, however, the spectroscopic luminosity ratio requires confirmation. The preliminary model produces the unusual partial light-curve quite well and supports the view that we are on the right track in our understanding of this interesting system.
Fisher Wesley A.
Hill Gary
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