2003A&A...409L..31B


Query : 2003A&A...409L..31B

2003A&A...409L..31B - Astronomy and Astrophysics, volume 409, L31-34 (2003/10-3)

Optical identification of the companion to PSR J1911-5958A, the pulsar binary in the outskirts of NGC 6752.

BASSA C.G., VERBUNT F., VAN KERKWIJK M.H. and HOMER L.

Abstract (from CDS):

We report on the identification of the optical counterpart of the binary millisecond pulsar PSR J1911-5958A, located in the outskirts of the globular cluster NGC6752. At the position of the pulsar we find an object with V=22.08, B-V=0.38, U-B=-0.49. The object is blue with respect to the cluster main sequence by 0.8 mag in B-V. We argue that the object is the white dwarf companion of the pulsar. Comparison with white dwarf cooling models shows that this magnitude and colors are consistent with a low-mass white dwarf at the distance of NGC6752. If associated with NGC 6752, the white dwarf is relatively young, ≲2Gyr, which sets constraints on the formation of the binary and its ejection from the core of the globular cluster.

Abstract Copyright:

Journal keyword(s): pulsars: individual: PSR J1911-5958A - globular clusters: individual: NGC 6752 - stars: neutron - stars: white dwarfs

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 - 2024
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3889 0
2 PSR B0021-72W Psr 00 24 06.0580 -72 04 49.088           ~ 77 1
3 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 1988 0
4 PSR J1910-5959A Psr 19 11 42.7562 -59 58 26.900 22.02 22.13 22.03     DA5 90 1

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