The Intermediate Age Open Cluster NGC 7044
Abstract
A photometric analysis is conducted of the open cluster NGC 7044, on the basis of UBVR CCD observations of 896 stars in the cluster field. Reddening and metallicity estimates are highly dependent on whether reddening slopes and absorption coefficients vary with spectral type. The color-magnitude diagram obtained is compared with selected sets of isochones, based on evolutionary models computed with and without consideration of convective overshooting from the stellar core during the H and He phases of core burning. Better general agreement is obtained between predicted and observed features of the color-magnitude diagram with overshooting models.
- Publication:
-
The Astronomical Journal
- Pub Date:
- October 1993
- DOI:
- Bibcode:
- 1993AJ....106.1547A
- Keywords:
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- Star Clusters;
- Star Distribution;
- Stellar Evolution;
- Stellar Luminosity;
- Stellar Mass;
- Astronomical Photometry;
- Color-Magnitude Diagram;
- Metallicity;
- Red Giant Stars;
- Stellar Models;
- Astrophysics;
- OPEN CLUSTERS AND ASSOCIATIONS: INDIVIDUAL: NGC 7044;
- Clusters: galaxy;
- Photometry: CCD 13 < V < 22 in the fields of the southern Abell cluster 2841;
- ESO/SERC field no. 195 13 < V < 22 in the fields of the southern Abell cluster S0191;
- ESO/SERC field no. 030 13 < V < 22 in the fields of the southern Abell cluster 3103;
- ESO/SERC field no. 054 13 < V < 22 in the fields of the southern Abell cluster O0495;
- ESO/SERC field no. 484 13 < V < 22 in the fields of the southern Abell cluster 3888;
- ESO/SERC field no. 345 13 < V < 22 in the fields of the southern Abell cluster O2583;
- ESO/SERC field no. 605 13 < V < 22 in the fields of the southern Abell cluster 4028;
- ESO/SERC field no. 110