New infrared star clusters and candidates in the Galaxy detected with 2MASS

被引:94
作者
Dutra, CM
Bica, E
机构
[1] Univ Fed Rio Grande do Sul, IF, BR-91501970 Porto Alegre, RS, Brazil
[2] Univ Sao Paulo, Inst Astron & Geofis, BR-01060970 Sao Paulo, Brazil
关键词
Galaxy : open clusters and associations : individual;
D O I
10.1051/0004-6361:20010978
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A sample of 42 new infrared star clusters, stellar groups and candidates was found throughout the Galaxy in the 2MASS J, H and especially K(S) atlases. In the Cygnus X region 19 new clusters, stellar groups and candidates were found as compared to 6 such objects in the previous literature. Colour-Magnitude Diagrams using the 2MASS Point Source Catalogue provided preliminary distance estimates in the range 1.0 < d. < 1.8 kpc for 7 Cygnus X clusters. Towards the central parts of the Galaxy 7 new IR clusters and candidates were found as compared to 61 previous objects. A search for prominent dark nebulae in K(S) was also carried out in the central bulge area. We report 5 dark nebulae, 2 of them are candidates for molecular clouds able to generate massive star clusters near the Nucleus, such as the Arches and Quintuplet clusters.
引用
收藏
页码:434 / 440
页数:7
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