The outer-halo globular cluster NGC 6229. III. Deep CCD photometry

Details The outer-halo globular cluster NGC 6229. III. Deep CCD photometry The outer-halo globular cluster NGC 6229. III. Deep CCD photometry

1998-10-22

arxiv.org/abs/astro-ph/9810355v2

Astron.Astrophys.343:813-824,1999

Astronomy and Astrophysics

Astrophysics

14 pages, 10 figures. Final version, to appear in Astronomy and Astrophysics

Scientific paper

Deep BV photometry for a large field covering the outer-halo globular cluster NGC 6229 is presented. For the first time, a colour-magnitude diagram (CMD) reaching below the main sequence turnoff has been obtained for this cluster. Previous results regarding the overall morphology of the horizontal and giant branches are confirmed. In addition, nine possible extreme horizontal-branch stars have been identified in our deep images, as well as thirty-three candidate blue stragglers. We also find the latter to be more centrally concentrated than subgiant branch stars covering the same range in V magnitude. A comparison of the cluster CMD with the M5 (NGC 5904) ridgeline from Sandquist et al. (1996) reveals that: i) NGC 6229 and M5 have essentially identical metallicities; ii) NGC 6229 and M5 have the same ages within the errors in spite of their different horizontal-branch morphologies.

Affiliated with

Also associated with

No associations

Rating

The outer-halo globular cluster NGC 6229. III. Deep CCD photometry 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 The outer-halo globular cluster NGC 6229. III. Deep CCD photometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The outer-halo globular cluster NGC 6229. III. Deep CCD photometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-266730