Do the Secular Variations in WY Cancri Mark the Spot Cycles?

Details Do the Secular Variations in WY Cancri Mark the Spot Cycles? Do the Secular Variations in WY Cancri Mark the Spot Cycles?

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....121.1076h&link_type=abstract

The Astronomical Journal, Volume 121, Issue 2, pp. 1076-1083.

Astronomy and Astrophysics

Astronomy

9

Stars: Binaries: Eclipsing, Stars: Activity, Stars: Individual: Constellation Name: Wy Cancri, Stars: Spots

Scientific paper

I present optical photometry of the short-period eclipsing RS Canum Venaticorum binary WY Cancri taken after the most recent secular luminosity increase, in 1997. Data taken between the previous two secular luminosity increases, in 1988 and 1997, show a tendency for spots to migrate toward increasing longitude within an active longitude belt. These new data show a trend for spots to migrate in the opposite direction, toward decreasing longitude. Based on these trends, I suggest that WY Cnc shows cyclic behavior and that the previously observed secular luminosity increases in WY Cnc mark the start of new magnetic activity cycles in which the direction of longitudinal spot migration reverses. Continued observations will of course be necessary to confirm this hypothesis.

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