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http://dx.doi.org/10.5140/JASS.2006.23.1.001

BVR PHOTOMETRY OF SUPERGIANT STARS IN HOLMBERG II  

Sohn Y.J. (Department of Astronomy, Yonsei University)
Chang S.W. (Department of Astronomy, Yonsei University)
Kim D.Y. (Department of Astronomy, Yonsei University)
Kim J.W. (Department of Astronomy, Yonsei University)
Kim S.H. (Department of Astronomy, Yonsei University)
Lee J.E. (Department of Astronomy, Yonsei University)
Lee J.G. (Department of Astronomy, Yonsei University)
Lee J.M. (Department of Astronomy, Yonsei University)
Lee M.Y. (Department of Astronomy, Yonsei University)
Lee S.Y. (Department of Astronomy, Yonsei University)
Lee U.S. (Department of Astronomy, Yonsei University)
Park B.K. (Department of Astronomy, Yonsei University)
Park H.E. (Department of Astronomy, Yonsei University)
Publication Information
Journal of Astronomy and Space Sciences / v.23, no.1, 2006 , pp. 1-10 More about this Journal
Abstract
We report the photometric properties in BVR bands for the resolved bright supergiant stars in the dwarf galaxy Holmberg II. The color-magnitude diagrams and color-color diagram of 374 resolved stars indicate that the majority of the member stars are supergiant stars with a wide range of spectral type between B-K. A comparison with theoretical evolutionary tracks indicates that the supergiant stars in the observed field have progenitor masses between ${\sim}10M_{\bigodot}\;and\;20M_{\bigodot}$. The exponent of luminosity function in V is in good agreement with those of the Small and Large Magellanic Clouds.
Keywords
photometry; supergiant stars; dwarf galaxy; Holmberg II;
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