The short-period eclipsing system XY UMa - 1982 UBV light curves and a flare-like event

Details The short-period eclipsing system XY UMa - 1982 UBV light curves and a flare-like event The short-period eclipsing system XY UMa - 1982 UBV light curves and a flare-like event

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..532z&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, April 1983, p. 532-534.

Astronomy and Astrophysics

Astronomy

21

Eclipsing Binary Stars, Light Curve, Stellar Flares, Ubv Spectra, Brightness, Stellar Magnitude

Scientific paper

We observed the short-period eclipsing system XY UMa (which displays RS CVn phenomena) on two nights in early 1982 at UBV bands. The light curves show both primary and secondary eclipses are asymmetrical and that a distortion wave of small amplitude has a minimum near phase 0.25. On the night of 1/31/82, we recorded a flare-like episode at phase 0.57 whose duration was about 30 minutes. The total energy in the outburst was about 9% of the system's flux at U, 4% at B, and 3% at V.

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