dc.contributor.author |
Yadav, R. K. S. |
|
dc.contributor.author |
Sagar, R. |
|
dc.date.accessioned |
2009-08-12T04:58:53Z |
|
dc.date.available |
2009-08-12T04:58:53Z |
|
dc.date.issued |
2004 |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/250 |
|
dc.description.abstract |
We present the UBVRI CCD photometry in the region of the open cluster NGC 2421. The radius of the cluster is determined as ~3.0 arcmin using a stellar density profile. Our study indicates that the metallicity of the cluster is Z ~0.004. the reddening E(B-V)=0.42 ± 0.05 mag is determined using a two colour (U-B) versus (B-V) diagram. By combining the 2MASS JHK data with the optical data, we determined that E(J-K) =0.20±0.20 mag and E(V-K) =1.15±0.20 mag for this cluster. Colour-excess diagrams show a normal interstellar extinction law in the direction of the cluster. We determined that the distance of the cluster is 2.2±0.2 kpc by comparing the zero-age main sequence with the intrinsic colour-magnitude diagram of the cluster. The age of the cluster has been estimated as 80±20 Myr using the stellar isochrones of metallicity Z=0.004. the mass function slope x=1.2 ±0.3 has been derived by applying the corrections of field star contamination and data incompleteness. Our analyses indicate that the cluster NGC 2421 is dynamically relaxed. |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.ispartofseries |
mn351-667 |
|
dc.subject |
Hertzsprung-Russell diagram – Stars, Luminosity Function, Mass Function, Clusters, NGC 2421 |
en_US |
dc.title |
A comprehensive CCD photometric study of the open cluster NGC 2421 |
en_US |
dc.type |
Article |
en_US |