To the Globular Cluster Classification Problem. Calculating the Concentration of Stars for 26 Clusters

Nuritdinov, S.N.; Tatjibaev, I.U.; Rastorguev, A.S.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 декабря 2021 г.

Авторы: Nuritdinov S.N., Tatjibaev I.U., Rastorguev A.S.
Журнал: Astronomy Letters
Том: 47
Номер: 3
Год издания: 2021
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 163
Последняя страница: 169
DOI: 10.1134/s106377372103004x
Аннотация: In view of the absence of a satisfactory solution to the globular cluster (GC) classificationproblem, we have searched for a physical parameter that admits of the GC classification and findingempirical dependences on observed physical characteristics. For this purpose, we have considered a model of the apparent density in GCs with three free parameters. Using the widely known simplex method of minimizing the square of the difference between the observed and theoretical densities, we have found the corresponding free parameters for 26 GCs. As observational data we have taken mostly the density profiles constructed byMiocchi et al. (2013) based on a combination ofHubble Space Telescope and ground-baseddata. One of the free parameters of our model characterizes the concentration of stars toward the GCcenter. We have found a number of empirical dependences of this parameter on the main physical characteristics of GCs. The derived empirical formulas can be used in determining these characteristics for other GCs via the concentration and vice versa.
Добавил в систему: Расторгуев Алексей Сергеевич

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To the Globular Cluster Classification Problem. Calculating the Concentration of Stars for 26 Clustersстатья

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