Young Galactic Globular Clusters II . The case of Pal 12 . ⋆
نویسندگان
چکیده
We present broadband V,I CCD photome-try for ∼ 1700 stars towards the Galactic globular cluster Palomar 12, covering a field of 10. ′ 7 × 10. ′ 7. From these data, a color-magnitude diagram from the red giant branch tip to ∼ 2 mag below the cluster's turn-off is obtained. From a comparison with the color magnitude diagrams of 47 Tuc and M5, and using different theoretical models, we confirm that Pal 12 is younger, finding an age 68 ± 10% that of both template clusters. Revised structural parameters are also obtained: r c = 37.8 ± 0.6 and c = 1.08 ± 0.02.
منابع مشابه
Young Galactic globular clusters II . The case of Palomar 12 ?
We present broadband V,I CCD photometry for ∼ 1700 stars towards the Galactic globular cluster Palomar 12, covering a field of 10.′7 × 10.′7. From these data, a colormagnitude diagram from the red giant branch tip to ∼ 2 mag below the cluster’s turn-off is obtained. From a comparison with the color magnitude diagrams of 47 Tuc and M5, and using different theoretical models, we confirm that Pal ...
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