Astrophysics and Space Science

, Volume 127, Issue 2, pp 327–343 | Cite as

A photometric study of three star fields in the southern region of M33

  • P. Z. Kunchev
  • N. S. Nikolov


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 andU≲20.4 andB≲21 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 0 m .5 fainter than OB78 (M31). The mean absorption and the foreground were examined as well.


Southern Region Luminosity Function Identification Chart National Observatory OB112 Association 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© D. Reidel Publishing Company 1986

Authors and Affiliations

  • P. Z. Kunchev
    • 1
  • N. S. Nikolov
    • 1
  1. 1.Department of AstronomyUniversity of SofiaBulgaria

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