A Search for Candidate Old Open Clusters: Preliminary Photometry of the Saurer et al. Clusters

Details A Search for Candidate Old Open Clusters: Preliminary Photometry of the Saurer et al. Clusters A Search for Candidate Old Open Clusters: Preliminary Photometry of the Saurer et al. Clusters

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aj....123.2552f&link_type=abstract

The Astronomical Journal, Volume 123, Issue 5, pp. 2552-2558.

Astronomy and Astrophysics

Astronomy

11

Galaxy: Fundamental Parameters, Galaxy: Structure, Galaxy: Open Clusters And Associations: General

Scientific paper

We have performed V and I CCD observations of the previously unstudied open cluster candidates proposed by Saurer et al. in 1994. Five of these clusters are found to be true clusters, with ages older than 1 Gyr, based on the ``morphological age index'' of Janes & Phelps, while effects of differential extinction make the identification of another as a true cluster inconclusive. The derived ages of the clusters range between a low of about 1 Gyr to a high of 7-8 Gyr for cluster A. Based on the derived parameters, cluster A is one of the oldest and the most distant of any Galactic open clusters studied to date.

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