2010A&A...513A..50B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST22:12:01

2010A&A...513A..50B - Astronomy and Astrophysics, volume 513, A50-50 (2010/4-1)

The end of the white dwarf cooling sequence in M 67.

BELLINI A., BEDIN L.R., PIOTTO G., SALARIS M., ANDERSON J., BROCATO E., RAGAZZONI R., ORTOLANI S., BONANOS A.Z., PLATAIS I., GILLILAND R., RAIMONDO G., BRAGAGLIA A., TOSI M., GALLOZZI S., TESTA V., KOCHANEK C.S., GIALLONGO E., BARUFFOLO A., FARINATO J., DIOLAITI E., SPEZIALI R., CARRARO G. and YADAV R.K.S.

Abstract (from CDS):

In this paper, we present for the first time a proper-motion-selected white dwarf (WD) sample of the old Galactic open cluster M 67, down to the bottom of the WD cooling sequence (CS). The color-magnitude diagram is based on data collected with the LBC-Blue camera at the prime-focus of LBT. As first epoch data, we used CFHT-archive images collected 10 years before LBC data. We measured proper motions of all the identified sources. Proper motions are then used to separate foreground and background objects from the cluster stars, including WDs. Finally, the field-object cleaned WD CS in the V vs. B-I color-magnitude diagram is compared with the models. We confirm that the age derived from the location of the bottom of the WD CS is consistent with the turn off age.

Abstract Copyright:

Journal keyword(s): white dwarfs - open clusters and associations: individual: NGC 2682 - Hertzsprung-Russell (HR) and C-M diagrams

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2032 0
2 NGC 6791 OpC 19 20 53 +37 46.3   10.52 9.5     ~ 869 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-22:12:01

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