EDP Sciences
Free Access
Volume 376, Number 2, September II 2001
Page(s) 434 - 440
Section Stellar clusters and associations
DOI https://doi.org/10.1051/0004-6361:20010978

A&A 376, 434-440 (2001)
DOI: 10.1051/0004-6361:20010978

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

C. M. Dutra1, 2 and E. Bica1

1  Universidade Federal do Rio Grande do Sul, IF, CP 15051, Porto Alegre 91501-970, RS, Brazil
2  Instituto Astronomico e Geofisico da USP, CP 3386, São Paulo 01060-970, SP, Brazil

(Received 17 April 2001 / Accepted 5 July 2001 )

A sample of 42 new infrared star clusters, stellar groups and candidates was found throughout the Galaxy in the 2MASS J, H and especially $K_{\rm S}$ 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 $1.0 < {\it d_{\odot}} < 1.8$ 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 $K_{\rm S}$ 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.

Key words: Galaxy: open clusters and associations: individual

Offprint request: C. M. Dutra, dutra@iagusp.usp.br

SIMBAD Objects in preparation

© ESO 2001

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.