A systematic survey for infrared star clusters with |b| < 20° using 2MASS

被引：166

作者：

Froebrich, D.

Scholz, A.

Raftery, C. L.

机构：

[1] Dublin Inst Adv Studies, Dublin 2, Ireland

[2] Univ Kent, Ctr Astrophys & Planetary Sci, Canterbury CT2 7NH, Kent, England

[3] Univ Toronto, Toronto, ON, Canada

[4] Trinity Coll Dublin, Dublin 2, Ireland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 374卷 / 02期

关键词：

methods : statistical; globular clusters : general; open clusters and associations : general;

D O I：

10.1111/j.1365-2966.2006.11148.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We used star density maps obtained from the Two-Micron All-Sky Survey (2MASS) to obtain a sample of star clusters in the entire Galactic Plane with vertical bar b vertical bar < 20 degrees. A total of 1788 star cluster candidates are identified in this survey. Among those are 681 previously known open clusters and 86 globular clusters. A statistical analysis indicates that our sample of 1021 new cluster candidates has a contamination of about 50 per cent. Star cluster parameters are obtained by fitting a King profile to the star density. These parameters are used to statistically identify probable new globular cluster candidates in our sample. A detailed investigation of the projected distribution of star clusters in the Galaxy demonstrates that they show a clear tendency to cluster on spatial scales in the order of 12-25 pc, a typical size for molecular clouds.

引用

页码：399 / 408

页数：10

共 19 条

[1] New infrared star clusters in the Northern and Equatorial Milky Way with 2MASS [J].