Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-12-04
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, to appear in Mem. Soc. Astr. Italiana, Vol. 79/2 (proceeding Cefalu' Workshop "XXI Century Challenges for
Scientific paper
We present deep and accurate photometry (F435W, F625W, F658N) of the Galactic Globular Cluster Omega Cen collected with the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope (HST). We identified ~ 6,500 white dwarf (WD)candidates and compared their radial distribution with that of Main Sequence (MS) stars. We found a mild evidence that young WDs (0.1 < t < 0.6 Gyr) are less centrally concentrated when compared to MS stars in the magnitude range 25 < F435W < 26.5.
Amico Paola
Bono Giuseppe
Buonanno Roberto
Calamida Annalisa
Corsi Carlo E.
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