Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168...72k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 72-80. SNSF-supported research.
Astronomy and Astrophysics
Astrophysics
15
Eclipsing Binary Stars, Stellar Evolution, Stellar Magnitude, Stellar Models, Stellar Spectra, Mass Transfer, Orbital Elements, Radial Velocity, Stellar Spectrophotometry, Stellar Temperature
Scientific paper
Multicolor photometric observations of the 1984 primary eclipse of the binary system RZ Ophiuchi have been obtained and analyzed. The ratio of the radii of the two components has been determined using the effective temperature and bolometric correction of each star, derived from its observed spectral classification and photometric colors, and a solution for the orbital inclination and the radius of each star made using this value. The solution supports the 'detached model' favored by Baldwin and by Forbes and Scarfe, in which neither star fills its critical surface. The photometric results were combined with a new radial velocity solution for the system, and physical parameters determined. It appears that RZ Oph may be an example of a system in a short-lived phase of 'Case C' mass exchange.
Baldwin Barrow W.
Knee Lewis B. G.
Mayor Marcel
Meatheringham Stephen J.
Scarfe Colin D.
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