Release 11.12 ("Hergest Ridge")
Release 11.12 ("Hergest Ridge")
| Article ID: gc283 | |
| Author | Balbinot, E.; Santiago, B. X.; Bica, E.; Bonatto, C. |
| Title | The globular cluster NGC 6642: evidence for a depleted mass function in a very old cluster |
| Journal | MNRAS, Vol. 396, Issue 3, pp. 1596-1602 |
| Year of publication | 2009 (on gclusters from 2011-03-30 17:39:58 ) |
| Abstract | We present photometry for the globular cluster NGC 6642 using the F606W and F814W filters with the Advanced Camera for Surveys in the Wide Field Channel (ACS/WFC) third generation camera on board of Hubble Space Telescope. The colour–magnitude diagram shows sources reaching ?6 mag below the turn–off in mF606W. A theoretical isochrone fitting was performed and evolutionary parameters were obtained, such as the metallicity [Fe/H]=1.80 ± 0.2 and age log [T(yr)]= 10.14 ± 0.05. We confirm that NGC 6642 is located in the Galactic bulge, with a distance to the Sun d= 8.05 ± 0.66 kpc and the reddening E(B-V) = 0.46 ± 0.02... |
| Tags | NGC 6642 |
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