Improved proper motion determinations for 15 open clusters based on the UCAC4 catalog

被引：2

作者：

Kurtenkov, Alexander ^{[1
,2
,3
]}

Dimitrova, Nadezhda ^{[4
]}

Atanasov, Alexander ^{[5
]}

Aleksiev, Teodor D. ^{[6
]}

机构：

[1] Univ Sofia, Dept Astron, 5 James Bourchier Blvd, Sofia 1164, Bulgaria

[2] Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shose Blvd, BU-1784 Sofia, Bulgaria

[3] Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shose Blvd, BU-1784 Sofia, Bulgaria

[4] Angloamer Sch Sofia, 1 Siyanie Str, Sofia 1138, Bulgaria

[5] Geo Milev High Sch Math, Pleven 5802, Bulgaria

[6] Sofia High Sch Math, 61 Iskar Str, Sofia 1000, Bulgaria

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2016年 / 16卷 / 07期

关键词：

proper motions; Galaxy: open clusters and associations: general; YOUNG OPEN CLUSTERS; MEMBERSHIP PROBABILITIES; TYCHO2; CATALOG; GALAXY; KPC;

D O I：

10.1088/1674-4527/16/7/105

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The proper motions of 15 nearby (d < 1 kpc) open clusters (OCs) were recalculated using data from the UCAC4 catalog. Only evolved or main sequence stars inside a certain radius from the center of the cluster were used. The results significantly differ from the ones presented by Dias et al. (2014). This could be explained by a different approach in which we take the field star contamination into account. The present work aims to emphasize the importance of applying photometric criteria for the calculation of OC proper motions.

引用

页数：8

共 44 条

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