Large photometric variations on II Peg in Sept/Nov 1986 : implications for the starspot hypothesis.
Bibcode: 1988A&A...192..275D
Doyle, J. G.; Butler, C. J.; Morrison, L. V.; Gibbs, P.
United Kingdom
Abstract
Large cyclic photometric variations of ΔV= 0.5 mag are observed on II Peg in late 1986. Modelled in terms of starspots, this implies a large spot group covering at least 40% (and perhaps as much as 55%) of the projected area of one hemisphere.
1988
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Astronomy and Astrophysics
IUE
23