2009ApJ...697..965B

Query : 2009ApJ...697..965B

2009ApJ...697..965B - Astrophys. J., 697, 965-979 (2009/June-1)

The end of the white dwarf cooling sequence in M4: an efficient approach.

BEDIN L.R., SALARIS M., PIOTTO G., ANDERSON J., KING I.R. and CASSISI S.

Abstract (from CDS):

We use 14 orbits of Advanced Camera for Surveys observations to reach the end of the white dwarf cooling sequence in the globular cluster M4. Our photometry and completeness tests show that the end is located at magnitude mF606W= 28.5±0.1, which implies an age of 11.6±0.6 Gyr (internal errors only). This is consistent with the age from fits to the main-sequence turnoff (12.0±1.4 Gyr).

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Journal keyword(s): globular clusters: individual: NGC 6121 - white dwarfs

Simbad objects: 6

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Number of rows : 6
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 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
2 * sig Sco bC* 16 21 11.3157134 -25 35 34.051476 2.32 3.02 2.89 1.69 1.58 B1III+B1:V 898 0
3 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
4 NAME Sco-Oph Cloud ? 16 30 00 -21 30.0           ~ 17 0
5 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
6 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0

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