Physics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...385l..49l&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 385, Feb. 1, 1992, p. L49-L52. Research supported by German-Israe
Physics
25
Accretion Disks, Astronomical Photometry, Eclipsing Binary Stars, Hercules Nova, Stellar Physics, Cataclysmic Variables, Light Curve, Stellar Magnitude, Stellar Orbits
Scientific paper
Photometric observations of Nova Herculis 1991 have been performed at the Wise Observatory, following its recent outbursts in 1991 March. A local minimum which appears periodically in the light curve of the star was discovered. The measured period is P = 0.29764 d, and it is most likely the orbital period of the underlying binary stellar system. The width of the minimum of 2.5-3 hr remained constant since it was first detected in April and throughout the following 12 w of observations, whereas its depth increased from 0.1 to 0.4 mag. The observed phenomenon is interpreted as an eclipse of a disk around the white dwarfs of this nova system, by a much less luminous companion.
Leibowitz Elia M.
Mashal Ezra
Mendelson Haim
Prialnik Dina
Seitter Waltraut C.
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