Multicolour Photographic Photometry of Orion Flare Stars

Details Multicolour Photographic Photometry of Orion Flare Stars Multicolour Photographic Photometry of Orion Flare Stars

May 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970bott....5..195a&link_type=abstract

Boletín de los Observatorios de Tonantzintla y Tacubaya Vol. 5, pp. 195-207 (1970) (http://www.astroscu.unam.mx/~bott/)

Astronomy and Astrophysics

Astronomy

11

Photometry, Galaxy: Open Clusters And Associations: Individual (Orion), Stars: Flare

Scientific paper

Photographic photometry of flare stars in the Orion aggregate, based on two UBVR photoelectric sequences, is presented. The photometric accuracy outside the main nebulosity is sufficient to discuss the ultraviolet and blue excesses found by Haro, and to examine their effect on the colour-magnitude diagram. From the evidence of a restricted band in the V-R/V diagram, due probably to the fact that colour anomalies in the visual and red are minimal, it is concluded that by far the majority of flare stars are members of the Orion aggregate.

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