UBVI CCD Photometry of the Old Open Cluster Berkeley 17

Details UBVI CCD Photometry of the Old Open Cluster Berkeley 17 UBVI CCD Photometry of the Old Open Cluster Berkeley 17

2005-12-05

arxiv.org/abs/astro-ph/0512131v1

Astron.J.131:1565-1573,2006

Astronomy and Astrophysics

Astrophysics

to appear in AJ; 28 pages, 9 figures

Scientific paper

10.1086/500258

Photometric UBVI CCD photometry is presented for NGC 188 and Berkeley 17. Color-magnitude diagrams (CMDs) are constructed and reach well past the main-sequence turn-off for both clusters. Cluster ages are determined by means of isochrone fitting to the cluster CMDs. These fits are constrained to agree with spectroscopic metallicity and reddening estimates. Cluster ages are determined to be 7.0+/-0.5 Gyr for NGC 188, and 10.0+/- 1.0 Gyr for Berkeley 17, where the errors refer to uncertainties in the relative age determinations. These ages are compared to the ages of relatively metal-rich inner halo/thick disk globular clusters and other old open clusters. Berkeley 17 and NGC 6791 are the oldest open clusters with an age of 10 Gyr. They are 2 Gyr younger than the thick disk globular clusters. These results confirm the status of Berkeley 17 as one of the oldest known open cluster in the Milky Way, and its age provides a lower limit to the age of the Galactic disk.

Affiliated with

Also associated with

No associations

Rating

UBVI CCD Photometry of the Old Open Cluster Berkeley 17 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with UBVI CCD Photometry of the Old Open Cluster Berkeley 17, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UBVI CCD Photometry of the Old Open Cluster Berkeley 17 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-697437