Multi-colour photometry of Orion flare stars

Details Multi-colour photometry of Orion flare stars Multi-colour photometry of Orion flare stars

Jan 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969cokon..65..137a&link_type=abstract

Commumications of the Konkoly Observatory, No. 65 (Vol. VI, 1), p. 137-148 (1969)

Physics

Scientific paper

The first results of a photometric study of the Orion flare stars is presented using material from the Boyden Observatory. A 60-inch photoelectric sequence, in U, B, V and R, and a photographic reduction technique developed for AHD Baker-Schmidt plates by C.J. Butler, are utilized to construct colour-magnitude and colour-colour diagrams for flare stars to V=16m. The scatter of the flare stars about the main sequence, pointed out by Haro, is confirmed in the B-V/V diagram. However, a fairly well-defined band in the V-R/V diagram is evident, extending from V-R=1.0m, V=12.5m to V-R=1.7m, V=16m. The classical flare stars appear to fall within the same region of the B-V/V-R diagram but to the red of the majority of Orion flare stars.

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