Analysis of Observational Data of Globular Clusters within the Framework of Gaia Dr2
S.J. TuraevNational University of Uzbekistan named after Mirzo Ulugbek, Tashkent, 100174 Uzbekistan;Salakhutdin Nasritdinovich NuritdinovNational University of Uzbekistan named after Mirzo Ulugbek, Tashkent, 100174 Uzbekistan;Alexey Sergeevich Rastorguev2Moscow State University named after M.V. Lomonosov, Moscow, 119234 Russia;D.A. RASHIDOVNational University of Uzbekistan named after Mirzo Ulugbek, Tashkent, 100174 Uzbekistan;
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Аннотация
This article is a logical continuation of the work of Nuritdinov et al. (2021). We analyzed space observations of the apparent surface density of 81 globular clusters (GCs) observed by GAIA DR2 and published in de Boer et al (2019). First, we studied the features of the quality of the GC surface density data, including comparing them with the HST data. Using our 3-parameter model, previously tested on the example of HST space observations, we found the values of the stellar concentration parameter towards the center of the cluster. As a result, we found good correlations of this parameter with the physical characteristics of the GCs. We have also found the corresponding empirical formulas for this parameter.
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