UBV(RI)c photometry of active stars. (Cutispoto, 1996)

Details UBV(RI)c photometry of active stars. (Cutispoto, 1996) UBV(RI)c photometry of active stars. (Cutispoto, 1996)

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..41190281c&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/119/281. Originally published in: 1996A&AS..119..281C

Physics

Stars: Variable, Photometry: Ubvri, Photometry: Cousins

Scientific paper

High-precision UBV(RI)c photometry of 12 selected active collected at the European Southern Observatory (La Silla, Chile) over the period February-March 1990, is presented. Significant evolution of the light curves, period variations and, in most cases, evidence for long-term variability of the global degree of spottedness are found. Some of the spectral classifications are discussed. This paper is part of a more extensive program focusing on the global properties and evolution of active stars and is aimed at establishing a time-extended photometric database which can give important clues on topics such as the stability of the spotted areas, differential rotation and solar-like cycles. For a description of the UBV and (RI)c photometric systems, see e.g. General Catalog of Photometric Data and .
(1 data file).

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