Bibcode
Marín-Franch, A.; Herrero, A.; Lenorzer, A.; Najarro, F.; Ramirez, S.; Font-Ribera, A.; Figer, D.
Bibliographical reference
Astronomy and Astrophysics, Volume 502, Issue 2, 2009, pp.559-567
Advertised on:
8
2009
Journal
Citations
10
Refereed citations
7
Description
Context: We present the results of a near-infrared photometric and
spectroscopic study of the star-forming region G61.48+0.09. Aims:
The purpose of this study is to characterize the stellar content of the
cluster and to determine its distance, extinction, age, and mass. Methods: The stellar population was studied by using color-magnitude
diagrams to select twenty promising cluster members, for which follow-up
spectroscopy was done. The observed spectra allowed a spectral
classification of the stars. Results: Two stars have emission
lines, twelve are G-type stars, and six are late-O or early-B stars. Conclusions: The cluster's extinction varies from AK_S =
0.9 to AK_S = 2.6, (or AV ˜ 8 to
AV ˜ 23). G61.48+0.09 is a star-forming region located
at 2.5±0.4 kpc. The cluster is younger than 10 Myr and has a
minimum stellar mass of 1.5± 0.5 × 10 3 M_&sun;.
However, the actual total mass of the cluster remains undetermined, as
we cannot see its whole stellar content.
Figures 2-4, are only available in electronic form at
http://www.aanda.org
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