Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...161..275g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 161, no. 2, June 1986, p. 275-286. Research supported by the Danish Board for
Astronomy and Astrophysics
Astrophysics
16
Apsides, Astronomical Photometry, Eclipsing Binary Stars, Light Curve, Stellar Motions, Early Stars, Ephemerides, Main Sequence Stars, Open Clusters, Stellar Evolution, Stellar Orbits
Scientific paper
New uvby Stromgren light curves and H-beta observations obtained in 1982 and 1983 with the Danish 50-cm ESO telescope are analyzed with the synthetic binary model WINK to determine the photometric elements. GL V Car is found to be a young and relatively massive eclipsing binary composed of two early-type stars, well detached from their Roche lobes, with a radii ratio of 0.95, a relative radius of the primary of 0.220, and an orbital inclination of 86.4 degrees. An accurate orbital eccentricity value of 0.1457 is derived, and an apsidal motion period of 25.22 years is obtained which corresponds to a weighted internal structure constant of -1.89 in agreement with theoretical predictions. GL Car seems to be associated to the Carina OB complex surrounding the open cluster NGC 3572.
Clausen Jens Viggo
Gimenez Alvaro
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