A search for the optical counterpart of the triple pulsar system PSR B1620-26 in M4 1

A. Shearer; R. Butler; R. M. Redfern; M. Cullum; A. C. Danks

doi:10.1086/310398

A search for the optical counterpart of the triple pulsar system PSR B1620-26 in M4 1

A. Shearer
, R. Butler
, R. M. Redfern
, M. Cullum
, A. C. Danks

Physics

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

9 Citations (Scopus)

Abstract

We have performed photometry in B and V of the field of the triple system PSR B1620-26 in the globular cluster M4. Our images were taken with two two-dimensional imaging photon-counting detectors, which permitted deep exposures to be made without saturation. Photometry of the proposed optical counterpart of the second companion of PSR B1620-26 was obtained, yielding a magnitude V = 21.30 ± 0.08 and a color B -V = 1.32 ± 0.20. The color index has not been successfully determined previously. These values locate the counterpart on the main sequence of the cluster color-magnitude diagram and lead to a mass determination that is consistent with a 0.48 M_⊙ cluster main-sequence star.

Original language	English
Pages (from-to)	L115-L118
Journal	Astrophysical Journal
Volume	473
Issue number	2 PART II
DOIs	https://doi.org/10.1086/310398
Publication status	Published - 1996

Keywords

Binaries: close
Globular clusters: individual (M4)
Pulsars: individual (PSR B1620-26)
Techniques: photometric

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10.1086/310398

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title = "A search for the optical counterpart of the triple pulsar system PSR B1620-26 in M4 1",

abstract = "We have performed photometry in B and V of the field of the triple system PSR B1620-26 in the globular cluster M4. Our images were taken with two two-dimensional imaging photon-counting detectors, which permitted deep exposures to be made without saturation. Photometry of the proposed optical counterpart of the second companion of PSR B1620-26 was obtained, yielding a magnitude V = 21.30 ± 0.08 and a color B -V = 1.32 ± 0.20. The color index has not been successfully determined previously. These values locate the counterpart on the main sequence of the cluster color-magnitude diagram and lead to a mass determination that is consistent with a 0.48 M⊙ cluster main-sequence star.",

keywords = "Binaries: close, Globular clusters: individual (M4), Pulsars: individual (PSR B1620-26), Techniques: photometric",

author = "A. Shearer and R. Butler and Redfern, \{R. M.\} and M. Cullum and Danks, \{A. C.\}",

year = "1996",

doi = "10.1086/310398",

language = "English",

volume = "473",

pages = "L115--L118",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

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TY - JOUR

T1 - A search for the optical counterpart of the triple pulsar system PSR B1620-26 in M4 1

AU - Shearer, A.

AU - Butler, R.

AU - Redfern, R. M.

AU - Cullum, M.

AU - Danks, A. C.

PY - 1996

Y1 - 1996

N2 - We have performed photometry in B and V of the field of the triple system PSR B1620-26 in the globular cluster M4. Our images were taken with two two-dimensional imaging photon-counting detectors, which permitted deep exposures to be made without saturation. Photometry of the proposed optical counterpart of the second companion of PSR B1620-26 was obtained, yielding a magnitude V = 21.30 ± 0.08 and a color B -V = 1.32 ± 0.20. The color index has not been successfully determined previously. These values locate the counterpart on the main sequence of the cluster color-magnitude diagram and lead to a mass determination that is consistent with a 0.48 M⊙ cluster main-sequence star.

AB - We have performed photometry in B and V of the field of the triple system PSR B1620-26 in the globular cluster M4. Our images were taken with two two-dimensional imaging photon-counting detectors, which permitted deep exposures to be made without saturation. Photometry of the proposed optical counterpart of the second companion of PSR B1620-26 was obtained, yielding a magnitude V = 21.30 ± 0.08 and a color B -V = 1.32 ± 0.20. The color index has not been successfully determined previously. These values locate the counterpart on the main sequence of the cluster color-magnitude diagram and lead to a mass determination that is consistent with a 0.48 M⊙ cluster main-sequence star.

KW - Binaries: close

KW - Globular clusters: individual (M4)

KW - Pulsars: individual (PSR B1620-26)

KW - Techniques: photometric

UR - https://www.scopus.com/pages/publications/21444455332

U2 - 10.1086/310398

DO - 10.1086/310398

M3 - Article

SN - 0004-637X

VL - 473

SP - L115-L118

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART II

ER -

A search for the optical counterpart of the triple pulsar system PSR B1620-26 in M4 1

Abstract

Keywords

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