EDP Sciences
Free Access
Volume 388, Number 1, June II 2002
Page(s) 172 - 178
Section Stellar clusters and associations
DOI https://doi.org/10.1051/0004-6361:20020451
Published online 28 May 2002

A&A 388, 172-178 (2002)
DOI: 10.1051/0004-6361:20020451

The embedded star clusters in the nebulae NGC 2327 and BRC 27 in Canis Majoris R1

J. B. Soares and E. Bica

Universidade Federal do Rio Grande do Sul, IF, CP 15051, Porto Alegre 91501-970, RS, Brazil

(Received 11 February 2002 / Accepted 21 March 2002 )

We employed J, H and $ K_{\rm s}$ photometry from the 2MASS Catalogue to study the embedded star clusters in the nebulae NGC 2327 and BRC 27 locate in the molecular cloud Canis Majoris R1. We made use of colour-colour and colour-magnitudes diagrams of the sample objects in conjunction with those of the Trapezium cluster which was used as a template, together with theoretical isochrones. The fundamental parameters were derived for the clusters. The distances found for NGC 2327 and BRC 27 were 1.2 kpc which are compatible with previous distances for the complex. The estimated ages are based mostly on the number of stars with anomalous colours, supposedly of types Herbig AeBe and T Tauri. Both embedded clusters have ages of $\approx$1.5 Myr. The results suggest the birth of a physical pair of star clusters in CMaR1.

Key words: Galaxy: open clusters and stellar associations: individual: NGC 2327, BRC 27

Offprint request: J. B. Soares, jules@if.ufrgs.br

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© ESO 2002

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