Can Globular Clusters in the Galaxy Be Classified by the Velocity Anisotropy Parameter?
DOI:
https://doi.org/10.15407/ujpe64.4.271Keywords:
globular star clusters, globular cluster classification, velocity anisotropy parameterAbstract
Classification problems of globular star clusters in the Galaxy have been briefly discussed. The values of the velocity anisotropy parameter are calculated for 36 globular clusters, by using relatively new data for their apparent surface density. Those values are grouped into three classes. The correlation of the examined parameter with other parameters of globular clusters is analyzed.
References
W. Harris.Catalog of parameters for Milky Way globularclusters: The database [http://www.physics.mcmaster.ca/resources/globular.html].
Globular Clusters - Guides to Galaxies. Proceedings of theJoint ESO-FONDAP Workshop on Globular Clusters, Concepcion, Chile, 6-10 March 2006 (Springer, 2009).
B.V. Kukarkin. On the concentraion classes of globular starclusters.Astron. Zh.48, 113 (1971) (in Russian).
A.M. Eigenson, O.S. Yatsyk. Comparative classification ofglobular clusters of the galaxy and M31 using cluster analysis. Astron. Zh.72, 641 (1995) (in Russian).
A.E. Ashurov, S.N. Nuritdinov. Finding out the velocityanisotropy parameter for some globular clusters: the case ofstationary model. ASPS Conf.228, 371 (2001).
A.E. Ashurov.On the theory of dynamic evolution of spher-ical gravitating systems. Ph.D. thesis (St. Petersburg, 1995)(in Russian).
P.Miocchi, B.Lanzoni, F.R.Ferraroet al. Star count densityprofiles and structural parameters of 26 galactic globularclusters. Astrophys. J.774, 151 (2013). https://doi.org/10.1088/0004-637X/774/2/151
R.M. Peikov, Z.I. Rusev. Spatial structure of the globularcluster M12. Astron. Zh.65, 41 (1988) (in Russian).
Z.I. Rusev, R.M. Peikov. Spatial structure of the globularcluster M56. Astron. Zh.63, 483 (1986) (in Russian).
Downloads
Published
How to Cite
Issue
Section
License
Copyright Agreement
License to Publish the Paper
Kyiv, Ukraine
The corresponding author and the co-authors (hereon referred to as the Author(s)) of the paper being submitted to the Ukrainian Journal of Physics (hereon referred to as the Paper) from one side and the Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, represented by its Director (hereon referred to as the Publisher) from the other side have come to the following Agreement:
1. Subject of the Agreement.
The Author(s) grant(s) the Publisher the free non-exclusive right to use the Paper (of scientific, technical, or any other content) according to the terms and conditions defined by this Agreement.
2. The ways of using the Paper.
2.1. The Author(s) grant(s) the Publisher the right to use the Paper as follows.
2.1.1. To publish the Paper in the Ukrainian Journal of Physics (hereon referred to as the Journal) in original language and translated into English (the copy of the Paper approved by the Author(s) and the Publisher and accepted for publication is a constitutive part of this License Agreement).
2.1.2. To edit, adapt, and correct the Paper by approval of the Author(s).
2.1.3. To translate the Paper in the case when the Paper is written in a language different from that adopted in the Journal.
2.2. If the Author(s) has(ve) an intent to use the Paper in any other way, e.g., to publish the translated version of the Paper (except for the case defined by Section 2.1.3 of this Agreement), to post the full Paper or any its part on the web, to publish the Paper in any other editions, to include the Paper or any its part in other collections, anthologies, encyclopaedias, etc., the Author(s) should get a written permission from the Publisher.
3. License territory.
The Author(s) grant(s) the Publisher the right to use the Paper as regulated by sections 2.1.1–2.1.3 of this Agreement on the territory of Ukraine and to distribute the Paper as indispensable part of the Journal on the territory of Ukraine and other countries by means of subscription, sales, and free transfer to a third party.
4. Duration.
4.1. This Agreement is valid starting from the date of signature and acts for the entire period of the existence of the Journal.
5. Loyalty.
5.1. The Author(s) warrant(s) the Publisher that:
– he/she is the true author (co-author) of the Paper;
– copyright on the Paper was not transferred to any other party;
– the Paper has never been published before and will not be published in any other media before it is published by the Publisher (see also section 2.2);
– the Author(s) do(es) not violate any intellectual property right of other parties. If the Paper includes some materials of other parties, except for citations whose length is regulated by the scientific, informational, or critical character of the Paper, the use of such materials is in compliance with the regulations of the international law and the law of Ukraine.
6. Requisites and signatures of the Parties.
Publisher: Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine.
Address: Ukraine, Kyiv, Metrolohichna Str. 14-b.
Author: Electronic signature on behalf and with endorsement of all co-authors.
.png){kind=small}
