UBVIJHK Photometric Study of the Open Cluster NGC 2849

Details UBVIJHK Photometric Study of the Open Cluster NGC 2849 UBVIJHK Photometric Study of the Open Cluster NGC 2849

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aj....128.2331k&link_type=abstract

The Astronomical Journal, Volume 128, Issue 5, pp. 2331-2338.

Astronomy and Astrophysics

Astronomy

1

Galaxies: Photometry, Infrared: Stars, Open Clusters And Associations: Individual (Ngc 2849)

Scientific paper

We present UBVIJHK photometry of the open cluster NGC 2849. Color-magnitude diagrams (CMDs) of this cluster show a well-defined main sequence and a sparse red giant branch. In spite of a relatively large color excess of E(B-V)=0.50+/-0.04, our color-color analysis shows that the interstellar reddening toward this cluster is compatible with the standard extinction model. The cluster also has a broad main sequence indicative of binary sequence rather than differential reddening or field contamination, as suggested elsewhere. From the ultraviolet excess, we estimate the metallicity to be [Fe/H]=-0.24+/-0.12. A distance modulus of (m-M)0=13.93+/-0.17 is obtained from zero-age main-sequence fitting. A CMD comparison with the Padua theoretical models published by Bertelli and coworkers gives an age of logt=8.8+/-0.1.

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