A photometric study of three star fields in the southern region of M33 |
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Authors: | P. Z. Kunchev N. S. Nikolov |
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Affiliation: | (1) Department of Astronomy, University of Sofia, Bulgaria |
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Abstract: | The 2 m RCC telescope of the Rozhen National Observatory (Bulgaria) was used to obtain the colour-magnitude and colour-colour diagrams of OB110 and OB112 associations which form the largest star grouping in the southern region of M33. The stars withV andU20.4 andB21 were measured. TheV magnitude, the coloursB - V, U - B and the respective identification charts are given. This allowed to construct the luminosity function of OB110+OB112. The group has an integrated magnitudeMVT=–11.8 which is by 0m.5 fainter than OB78 (M31). The mean absorption and the foreground were examined as well. |
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