UBVRI observations of southern hemisphere active stars. II - 1987 data

Details UBVRI observations of southern hemisphere active stars. II - 1987 data UBVRI observations of southern hemisphere active stars. II - 1987 data

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...89..435c&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 89, no. 3, Sept. 1991, p. 435-449. Research supported by CNR

Mathematics

Logic

34

Light Curve, Stellar Activity, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Chromosphere, Late Stars, Photosphere, Solar Cycles, Stellar Coronas

Scientific paper

Results are presented on high-precision UBV (RI)c photometric observations of 13 southern-hemisphere RS CVn, BY Dra, and FK Com-type variable stars, carried out in December 1987 at the European Southern Observatory at La Silla (Chile). Compared with previous observations, significant changes of the light curves were detected, both in amplitude and shape.

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