The end of the white dwarf cooling sequence in M 67

A. Bellini; L. R. Bedin; G. Piotto; M. Salaris; J. Anderson; E. Brocato; R. Ragazzoni; S. Ortolani; A. Z. Bonanos; I. Platais; R. Gilliland; G. Raimondo; A. Bragaglia; M. Tosi; S. Gallozzi; V. Testa; C. S. Kochanek; E. Giallongo; A. Baruffolo; J. Farinato; E. Diolaiti; R. Speziali; G. Carraro; R. K.S. Yadav

doi:10.1051/0004-6361/200913721

The end of the white dwarf cooling sequence in M 67

A. Bellini, L. R. Bedin, G. Piotto, M. Salaris, J. Anderson, E. Brocato, R. Ragazzoni, S. Ortolani, A. Z. Bonanos, I. Platais, R. Gilliland, G. Raimondo, A. Bragaglia, M. Tosi, S. Gallozzi, V. Testa, C. S. Kochanek, E. Giallongo, A. Baruffolo, J. FarinatoE. Diolaiti, R. Speziali, G. Carraro, R. K.S. Yadav

Astronomy & Astrophysics

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Abstract

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.

Original language	English (US)
Article number	A50
Journal	Astronomy and Astrophysics
Volume	513
Issue number	10
DOIs	https://doi.org/10.1051/0004-6361/200913721
State	Published - Apr 27 2010

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/200913721

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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., ... Yadav, R. K. S. (2010). The end of the white dwarf cooling sequence in M 67. Astronomy and Astrophysics, 513(10), Article A50. https://doi.org/10.1051/0004-6361/200913721

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title = "The end of the white dwarf cooling sequence in M 67",

abstract = "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.",

author = "A. Bellini and Bedin, {L. R.} and G. Piotto and M. Salaris and J. Anderson and E. Brocato and R. Ragazzoni and S. Ortolani and Bonanos, {A. Z.} and I. Platais and R. Gilliland and G. Raimondo and A. Bragaglia and M. Tosi and S. Gallozzi and V. Testa and Kochanek, {C. S.} and E. Giallongo and A. Baruffolo and J. Farinato and E. Diolaiti and R. Speziali and G. Carraro and Yadav, {R. K.S.}",

year = "2010",

month = apr,

day = "27",

doi = "10.1051/0004-6361/200913721",

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Bellini, A, Bedin, LR, Piotto, G, Salaris, M, Anderson, J, Brocato, E, Ragazzoni, R, Ortolani, S, Bonanos, AZ, Platais, I, Gilliland, R, Raimondo, G, Bragaglia, A, Tosi, M, Gallozzi, S, Testa, V, Kochanek, CS, Giallongo, E, Baruffolo, A, Farinato, J, Diolaiti, E, Speziali, R, Carraro, G & Yadav, RKS 2010, 'The end of the white dwarf cooling sequence in M 67', Astronomy and Astrophysics, vol. 513, no. 10, A50. https://doi.org/10.1051/0004-6361/200913721

TY - JOUR

T1 - The end of the white dwarf cooling sequence in M 67

AU - Bellini, A.

AU - Bedin, L. R.

AU - Piotto, G.

AU - Salaris, M.

AU - Anderson, J.

AU - Brocato, E.

AU - Ragazzoni, R.

AU - Ortolani, S.

AU - Bonanos, A. Z.

AU - Platais, I.

AU - Gilliland, R.

AU - Raimondo, G.

AU - Bragaglia, A.

AU - Tosi, M.

AU - Gallozzi, S.

AU - Testa, V.

AU - Kochanek, C. S.

AU - Giallongo, E.

AU - Baruffolo, A.

AU - Farinato, J.

AU - Diolaiti, E.

AU - Speziali, R.

AU - Carraro, G.

AU - Yadav, R. K.S.

PY - 2010/4/27

Y1 - 2010/4/27

N2 - 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.

AB - 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.

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DO - 10.1051/0004-6361/200913721

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VL - 513

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 10

M1 - A50

ER -

The end of the white dwarf cooling sequence in M 67

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