CCD photometry of the globular cluster Palomar 13

Details CCD photometry of the globular cluster Palomar 13 CCD photometry of the globular cluster Palomar 13

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26as..121..499b&link_type=abstract

A & A Supplement series, Vol. 121, March 1997, 499-505.

Astronomy and Astrophysics

Astronomy

6

Globular Clusters: Individual: Palomar 13, Hertzprung-Russel Diagram

Scientific paper

A new CCD photometry of the halo cluster Palomar 13 is used to construct a color-magnitude diagram in the Thuan-Gunn and the B, V photometric systems. The color-magnitude diagram of the cluster shows as already noted by \cite[Ortolani et al. (1985)]{ref21} an extremely poor red horizontal branch and a very sparsely populated giant branch. Seven BSS candidates are identified in the field of Palomar 13. The age of the cluster determined by fitting with the isochrones of \cite[Proffitt & Vanden Berg (1991)]{ref22} and \cite[Bergbusch & Vanden Berg (1992)]{ref3} and by a differential comparison of the color-magnitude diagram with that of Pal 5 is 12+/-2 Gyr. Tables 6 and 7 only available in electronic form at CDS.

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