Photometric Study on the Spot-Double Star XY Ursae Majoris(ii)

Details Photometric Study on the Spot-Double Star XY Ursae Majoris(ii) Photometric Study on the Spot-Double Star XY Ursae Majoris(ii)

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jass....5...97l&link_type=abstract

Journal of Astronomy and Space Science, vol. 5, no. 2, p. 97-109.

Astronomy and Astrophysics

Astronomy

Scientific paper

The photometric behaviour of XY UMa, an eclipsing binary showing photospheric and chromospheric activity, has been described by spot hypothesis. They are based on the all the available UBV light curves, which were carried out by Geyer since 1955. A "spherical rectangular" spot model shows very pronounced spot activities during the last 30 years. On the average, the spot covered about 16% of the visible hemisphere. Observational evidence for photospheric and chromospheric activities on the XY UMa and related systems are also discussed.

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