2005ApJ...621L.117M

Query : 2005ApJ...621L.117M

2005ApJ...621L.117M - Astrophys. J., 621, L117-L120 (2005/March-2)

The discovery of more than 2000 white dwarfs in the globular cluster ω Centauri.

MONELLI M., CORSI C.E., CASTELLANI V., FERRARO I., IANNICOLA G., PRADA MORONI P.G., BONO G., BUONANNO R., CALAMIDA A., FREYHAMMER L.M., PULONE L. and STETSON P.B.

Abstract (from CDS):

We present deep multiband (F435W, F625W, and F658N) photometric data of the globular cluster ω Cen collected with the Advanced Camera for Surveys on board the Hubble Space Telescope. We identified in the (F435W - F625W, F435W)-plane more than 2000 white dwarf (WD) candidates using three out of nine available pointings. Such a large sample appears to be in agreement with predictions based on the ratio between WD and horizontal-branch evolutionary lifetimes. We also detected ~1600 WDs in the (F658N - F625W, F625W)-plane, supporting the evidence that a large fraction of current cluster WDs are Hα-bright.

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Journal keyword(s): Galaxy: Globular Clusters: General - Galaxy: Globular Clusters: Individual: Name: ω Centauri

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
2 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
3 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
4 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0

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