Open clusters in the Third Galactic Quadrant. II. The intermediate age open clusters NGC 2425 and NGC 2635
arXiv:astro-ph/0509125 · doi:10.1051/0004-6361:20053254
Abstract
We analyse CCD broad band (UBV(RI)c) photometric data obtained in the fields of the poorly studied open clusters NGC 2425 and NGC 2635. Both clusters are found to be of intermediate age thus increasing the population of open clusters known to be of the age of, or older than, the Hyades. More explicitly, we find that NGC 2425 is a 2.2 Gyr old cluster, probably of solar metallicity, located at 3.5 kpc from the Sun. NGC 2635 is a Hyades age (600 Myr) cluster located at a distance of 4.0 kpc from the Sun. Its Colour Magnitude Diagram reveals that it is extremely metal poor for its age and position, thus making it a very interesting object in the context of Galactic Disk chemical evolution models.
10 pages, 13 figures. Figure quality has been quiet degraded. Accepted by A&A
References in corpus (6)
- Evolutionary tracks and isochrones for low- and intermediate-mass stars: from 0.15 to 7 M_sun, and from Z=0.0004 to 0.03
- New catalogue of optically visible open clusters and candidates
- On the galactic disc age-metallicity relation
- NGC 6404 and NGC 6583: two neglected intermediate-age open clusters located in the Galactic Center direction
- NGC 2580 and NGC 2588: Two open clusters in the Third Galactic Quadrant
- The intermediate-age open clusters Ruprecht 4, Ruprecht 7 and Pismis 15
Cited by in corpus (9)
- On the fine structure of the Cepheid metallicity gradient in the Galactic thin disk
- A Chemical Abundance Study of 10 Open Clusters Based on WIYN-Hydra Spectroscopy
- Spiral structure of the Third Galactic Quadrant and the solution to the Canis Major debate
- Open clusters and associations in the Gaia era
- Photometric characterization of the Galactic star cluster Trumpler 20
- Photometry of the five marginally studied open clusters Collinder 74, Berkeley 27, Haffner 8, NGC 2509 and VdB-Hagen 4
- An efficient approach to extract parameters from star cluster CMDs: fitCMD
- NGC 2401: A template of the Norma-Cygnus Arm's young population in the Third Galactic Quadrant
- Open Clusters as Probes of the Galactic Magnetic Field: I. Cluster Properties