Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity

Details Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...453...91c&link_type=abstract

Astronomy and Astrophysics, Volume 453, Issue 1, July I 2006, pp.91-99

Astronomy and Astrophysics

Astrophysics

9

Galaxy: Open Clusters And Associations: General, Stars: Binaries: Spectroscopic, Techniques: Photometric, Techniques: Radial Velocities, Stars: Abundances

Scientific paper

Aims.We present new CORAVEL radial-velocity observations and photoelectric photometry in the UBV and DDO systems for a sample of potential members of the red-giant branches of NGC 6192, NGC 6208 and NGC 6268, three open clusters projected close to the Galactic center direction. We also examine the properties of a sample of 42 inner disk open clusters projected towards almost the same direction as the three clusters. Methods: .Cluster members and red field giants were discriminated by using the CORAVEL radial-velocity data and by applying two photometric criteria. Interstellar reddening and metal content of the clusters were derived from combined BV and DDO data. Results: .Cluster membership for five red giants in NGC 6192, three in NGC 6208 and three in NGC 6268 has been confirmed by the analysis of the photometric and kinematic data. Photometric membership probabilities show very good agreement with those obtained from CORAVEL radial velocities. Three new spectroscopic binaries were discovered among the red giants of NGC 6192 and NGC 6208. Mean radial velocities and E(B-V) colour excesses were derived. Conclusions: .The overall metallicities were found to be nearly solar for NGC 6208 and above solar for NGC 6192 and NGC 6268. Most of the clusters located closer than 2 kpc from the Sun in the considered direction are slightly more reddened than the absorption resulting from the Baade's window absorption law.

Affiliated with

Also associated with

No associations

Rating

Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity 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 Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1135682