A study of flare stars in the Taurus region

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Flare Stars, H Alpha Line, Molecular Clouds, Statistical Analysis, Stellar Spectrophotometry, Taurus Constellation, Hertzsprung-Russell Diagram, Pleiades Cluster, Star Distribution, Ubv Spectra

Scientific paper

The results are given of a search for flare stars in the region of the dark clouds in Taurus, together with the results of photometric, H-alpha-spectroscopic, and statistical investigations of them. Photographic observations during 1980-1984 revealed 92 new flare stars, 13 of which were found to be known Orion variables with 16 repeated flares of 13 previously known flare stars. Their apparent distribution is considered. The question of whether the flare stars belong to a dark cloud is discussed. A comparative analysis of the flare stars in the Taurus region and other aggregates is made. The Hertzsprung-Russell (V, B - V) and two-color (U - B, B - V) diagrams for the flare stars are similar to the corresponding diagrams constructed for star clusters and associations (Pleiades, Orion, etc.).

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