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http://dx.doi.org/10.5303/JKAS.2009.42.4.071

STATISTICAL GAUSSIAN DISTRIBUTION FUNCTION AS A DISTANCE INDICATOR TO STELLAR GROUPS  

Abdel-Rahman, H.I. (National Research Institute of Astronomy and Geophysics, Helwan)
Issa, I.A. (National Research Institute of Astronomy and Geophysics, Helwan)
Sharaf, M.A. (Department of Astronomy, Faculty of Science, King Abdul Aziz Univ.)
Nouh, M.I. (National Research Institute of Astronomy and Geophysics, Helwan)
Bakry, A. (Department of Astronomy, Faculty of Science Al-Azhar Univ.)
Osman, A.I. (Department of Astronomy, Faculty of Science Al-Azhar Univ.)
Saad, A.S. (National Research Institute of Astronomy and Geophysics, Helwan)
Kamal, F.Y. (Department of Astronomy, Faculty of Science Al-Azhar Univ.)
Essam, Essam (National Research Institute of Astronomy and Geophysics, Helwan)
Publication Information
Journal of The Korean Astronomical Society / v.42, no.4, 2009 , pp. 71-79 More about this Journal
Abstract
In this paper, statistical distribution functions are developed for distance determination of stellar groups. This method depends on the assumption that absolute magnitudes and apparent magnitudes follow a Gaussian distribution function. Due to the limits of the integrands of the frequency function of apparent and absolute magnitudes, we introduce Case A, B, and C Gaussian distributions. The developed approaches have been implemented to determine distances to some clusters and stellar associations. The comparison with the distances derived by different authors reveals good agreement.
Keywords
Distance scales; Methods: statistical; Galaxies: star clusters; Stars: fundamental parameters;
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