UBV photometry of ten southern hemisphere active-chromosphere stars

Details UBV photometry of ten southern hemisphere active-chromosphere stars UBV photometry of ten southern hemisphere active-chromosphere stars

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92.1409b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Dec. 1986, p. 1409-1413.

Other

23

Chromosphere, Southern Hemisphere, Stellar Activity, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Abundance, Emission Spectra, H Alpha Line, Light Curve, Star Formation, Stellar Evolution

Scientific paper

The authors have obtained high-precision UBV photometry of ten southern hemisphere active-chromosphere stars with strong Ca II H and K and/or Hα emission. Eight of these stars showed variability during June 1985. The authors present complete or partial light curves for the stars, and compare these data, as well as mean V magnitudes and colors, with the results of other investigators. In a number of cases, significant changes in photometric amplitude are found, which may serve to track the formation and evolution of active regions on these stars.

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