UBVRI photometry of 7 dwarfs in Alpha Per (Bouvier 1996)

Details UBVRI photometry of 7 dwarfs in Alpha Per (Bouvier 1996) UBVRI photometry of 7 dwarfs in Alpha Per (Bouvier 1996)

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..41200127b&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/120/127. Originally published in: 1996A&AS..120..127B

Physics

Stars: Dwarfs, Photometry: Ubvri

Scientific paper

The UBVRI light curves of 7 late-type dwarfs amongst the fastest rotators of the Alpha Per cluster (vsini>=140km/s) are presented. The shape of the light curves suggests that the photometric variations are most often dominated by a single group of cool spots located at intermediate or high latitude on the stellar surface. Assuming that starspots are good tracers of the stellar magnetic field, the smooth light curves indicate the existence of a large scale, slowly varying magnetic structure at the surface of these ultrafast rotators. For a description of the UBVRI photometric system, see e.g. (1 data file).

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