Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..527w&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 3, p. 527-532.
Astronomy and Astrophysics
Astronomy
25
Eclipsing Binary Stars, Magellanic Clouds, Stellar Spectrophotometry, Variable Stars, Charge Coupled Devices, Eccentricity, Light Curve, Stellar Orbits, Stellar Rotation
Scientific paper
B, V and I photometry is presented for eclipsing binary HV 2274 located in the LMC. Over 100 data points were acquired in each filter to an estimated precision of 0.01-0.015 mag using the CCD system at the Mount John University Observatory, New Zealand, during 1990. The light curves show clear evidence of an eccentric orbit in a detached system. We present a revised ephemeris. Analyzed with the Etzel EBOP code, our light curves suggest an orbital eccentricity of 0.128 (+/-0.008) and inclination of 88.2 deg (+/-0.2 deg). The system plausibly comprises two fairly similar, early B stars. We combine our eclipse timing with those of Gaposhkin (1977) to derive an apsidal rotation period of 123 (+/-3) yr.
Gilmore Alan C.
Tobin William
Watson Robert D.
West R. D. S.
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