Globular Cluster as Indicators of Galactic Evolution
We have studied the system of globular clusters (GCs) that formed in other galaxies and eventually accreted onto the Milky Way. Thus, the samples of GCs belonging to different tidal streams, obtained on the basis of the latest data from the GAIA observatory, were taken from the literature. We measur...
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| Veröffentlicht in: | Astronomy reports 2022-03, Vol.66 (3), p.191-199 |
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| creator | Arkelyan, N. R. Pilipenko, S. V. |
| description | We have studied the system of globular clusters (GCs) that formed in other galaxies and eventually accreted onto the Milky Way. Thus, the samples of GCs belonging to different tidal streams, obtained on the basis of the latest data from the GAIA observatory, were taken from the literature. We measured the anisotropy of the distribution of these GCs using the tensor of inertia and found that the distribution of GCs in the streams is isotropic. Nevertheless, it can be seen that some of the accreted GCs included into existing samples actually belong to the disk of the Galaxy. To clarify the origin of GCs, we investigated “the age–metallicity” relation. This dependence appeared to be bimodal and its two different branches clearly show the difference between the clusters formed in the streams and in the disk of the Galaxy. Furthermore, we have studied the influence of the large-scale environment of the Galaxy (i.e., the Local Supercluster) on the distribution of satellite galaxies and Galactic GCs. The satellite galaxies of the Milky Way are known to form an anisotropic planar structure, so we included them in our analysis too. An inspection has shown that the plane of the satellite galaxies is perpendicular both to the disk of the Galaxy and the supergalactic plane. For GCs more distant than 100 Kpc, a similar picture is observed. |
| doi_str_mv | 10.1134/S1063772922030015 |
| format | Article |
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Furthermore, we have studied the influence of the large-scale environment of the Galaxy (i.e., the Local Supercluster) on the distribution of satellite galaxies and Galactic GCs. The satellite galaxies of the Milky Way are known to form an anisotropic planar structure, so we included them in our analysis too. An inspection has shown that the plane of the satellite galaxies is perpendicular both to the disk of the Galaxy and the supergalactic plane. For GCs more distant than 100 Kpc, a similar picture is observed.</description><identifier>ISSN: 1063-7729</identifier><identifier>EISSN: 1562-6881</identifier><identifier>DOI: 10.1134/S1063772922030015</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Anisotropy ; Astronomy ; Galactic clusters ; Galactic evolution ; Galactic superclusters ; Galaxies ; Galaxy distribution ; Globular clusters ; Inspection ; Metallicity ; Milky Way ; Observations and Techniques ; Physics ; Physics and Astronomy ; Planar structures ; Satellites ; Stars & galaxies ; Streams ; Tensors</subject><ispartof>Astronomy reports, 2022-03, Vol.66 (3), p.191-199</ispartof><rights>The Author(s) 2022. ISSN 1063-7729, Astronomy Reports, 2022, Vol. 66, No. 3, pp. 191–199. © The Author(s), 2022. This article is an open access publication. 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R.</creatorcontrib><creatorcontrib>Pilipenko, S. V.</creatorcontrib><title>Globular Cluster as Indicators of Galactic Evolution</title><title>Astronomy reports</title><addtitle>Astron. Rep</addtitle><description>We have studied the system of globular clusters (GCs) that formed in other galaxies and eventually accreted onto the Milky Way. Thus, the samples of GCs belonging to different tidal streams, obtained on the basis of the latest data from the GAIA observatory, were taken from the literature. We measured the anisotropy of the distribution of these GCs using the tensor of inertia and found that the distribution of GCs in the streams is isotropic. Nevertheless, it can be seen that some of the accreted GCs included into existing samples actually belong to the disk of the Galaxy. To clarify the origin of GCs, we investigated “the age–metallicity” relation. This dependence appeared to be bimodal and its two different branches clearly show the difference between the clusters formed in the streams and in the disk of the Galaxy. Furthermore, we have studied the influence of the large-scale environment of the Galaxy (i.e., the Local Supercluster) on the distribution of satellite galaxies and Galactic GCs. The satellite galaxies of the Milky Way are known to form an anisotropic planar structure, so we included them in our analysis too. An inspection has shown that the plane of the satellite galaxies is perpendicular both to the disk of the Galaxy and the supergalactic plane. For GCs more distant than 100 Kpc, a similar picture is observed.</description><subject>Anisotropy</subject><subject>Astronomy</subject><subject>Galactic clusters</subject><subject>Galactic evolution</subject><subject>Galactic superclusters</subject><subject>Galaxies</subject><subject>Galaxy distribution</subject><subject>Globular clusters</subject><subject>Inspection</subject><subject>Metallicity</subject><subject>Milky Way</subject><subject>Observations and Techniques</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Planar structures</subject><subject>Satellites</subject><subject>Stars & galaxies</subject><subject>Streams</subject><subject>Tensors</subject><issn>1063-7729</issn><issn>1562-6881</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><recordid>eNp1kEFLxDAQhYMouK7-AG8Bz9VMkqbpUcpaFxY8qOeQpol0qc2apIL_3iwVPIinGXjfezM8hK6B3AIwfvcMRLCqojWlhBEC5QlaQSloIaSE07xnuTjq5-gixn0mQDKxQrwdfTePOuBmnGOyAeuIt1M_GJ18iNg73OpRmzQYvPn045wGP12iM6fHaK9-5hq9Pmxemsdi99Rum_tdYaisU9FT6EBCX1ldc8pAcwDt8g8SOO80sT0Rsma1FqJztTWEVIxLLqksuXBdydboZsk9BP8x25jU3s9hyicVFbwEyUlFMgULZYKPMVinDmF41-FLAVHHctSfcrKHLp6Y2enNht_k_03frg9jZQ</recordid><startdate>20220301</startdate><enddate>20220301</enddate><creator>Arkelyan, N. 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V.</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Astronomy reports</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Arkelyan, N. R.</au><au>Pilipenko, S. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Globular Cluster as Indicators of Galactic Evolution</atitle><jtitle>Astronomy reports</jtitle><stitle>Astron. Rep</stitle><date>2022-03-01</date><risdate>2022</risdate><volume>66</volume><issue>3</issue><spage>191</spage><epage>199</epage><pages>191-199</pages><issn>1063-7729</issn><eissn>1562-6881</eissn><abstract>We have studied the system of globular clusters (GCs) that formed in other galaxies and eventually accreted onto the Milky Way. Thus, the samples of GCs belonging to different tidal streams, obtained on the basis of the latest data from the GAIA observatory, were taken from the literature. We measured the anisotropy of the distribution of these GCs using the tensor of inertia and found that the distribution of GCs in the streams is isotropic. Nevertheless, it can be seen that some of the accreted GCs included into existing samples actually belong to the disk of the Galaxy. To clarify the origin of GCs, we investigated “the age–metallicity” relation. This dependence appeared to be bimodal and its two different branches clearly show the difference between the clusters formed in the streams and in the disk of the Galaxy. Furthermore, we have studied the influence of the large-scale environment of the Galaxy (i.e., the Local Supercluster) on the distribution of satellite galaxies and Galactic GCs. The satellite galaxies of the Milky Way are known to form an anisotropic planar structure, so we included them in our analysis too. An inspection has shown that the plane of the satellite galaxies is perpendicular both to the disk of the Galaxy and the supergalactic plane. For GCs more distant than 100 Kpc, a similar picture is observed.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063772922030015</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Anisotropy Astronomy Galactic clusters Galactic evolution Galactic superclusters Galaxies Galaxy distribution Globular clusters Inspection Metallicity Milky Way Observations and Techniques Physics Physics and Astronomy Planar structures Satellites Stars & galaxies Streams Tensors |
| title | Globular Cluster as Indicators of Galactic Evolution |
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