Flares & Activity in FF Aquarii & Lambda Andromedae

Details Flares & Activity in FF Aquarii & Lambda Andromedae Flares & Activity in FF Aquarii & Lambda Andromedae

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984iue..prop.1765b&link_type=abstract

IUE Proposal ID #CCGSB

Computer Science

Scientific paper

The serendipitous detection of an extremely energetic flare on the activechromosphere G8 IV-III star lambda And provides a unique opportunity for comparative flare studies. Our long-term investigations of A And and FF Aqr, a binary with a G8 III star reveals that the chromospheric activity in FF Aqr is more intense and extreme than in lambda And, primarily because the G8 III star FF Aqr rotates six times faster than lambda And. Some of the UV surface fluxes from FF Aqr and 20-50 times those of A And. In photometric U-band monitoring reveals flaring on the G8 III star in FF Aqr as bright as a magnitude and as frequently as once an hour. We expect, therefore, a flare more luminous than observed on lambda And. Such a flare would provide strong and extreme constraints for theoretical models of stellar flares.

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