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Wide field CAMera survey of M31 globular clusters: low-mass X-ray binaries

Wide field CAMera survey of M31 globular clusters: low-mass X-ray binaries
Wide field CAMera survey of M31 globular clusters: low-mass X-ray binaries
We investigate the relationship between low-mass X-ray binaries (LMXBs) and globular clusters (GCs) using United Kingdom Infrared Telescope (UKIRT) observations of M31 and existing Chandra, XMM-Newton and ROSAT catalogues. By fitting King models to these data, we have estimated the structural parameters and stellar collision rates of 239 of its GCs. We show a highly significant trend between the presence of a LMXB and the stellar collision rate of a cluster. The stellar collision rate is found to be a stronger predictor of which clusters will host LMXBs than the host cluster mass. We argue that our results show that the stellar collision rate of the clusters is the fundamental parameter related to the production LMXBs. This is consistent with the formation of LMXBs through dynamical interactions with little direct dependence on the neutron star retention fraction or cluster mass
binaries: general, globular clusters, general, X-rays: binaries
1745-3933
L55-L59
Peacock, Mark B.
e3eb9dc1-2e7b-4946-8ec8-2ad5a66081e9
Maccarone, Thomas J.
27e6101c-8fa4-41db-ba75-d2ee3d1a0c53
Waters, Christopher Z.
897683f5-911b-4f4f-9dd3-e4cf02e5e8c1
Kundu, Arunav
ece8dcd2-e6dc-4f02-a90b-016ba9b573ed
Zepf, Stephen E.
108fcc75-6611-48a3-b405-99737b38af85
Knigge, Christian
ac320eec-631a-426e-b2db-717c8bf7857e
Zurek, David R.
9874684b-3f56-4f4f-83f7-7a9c3c657f2b
Peacock, Mark B.
e3eb9dc1-2e7b-4946-8ec8-2ad5a66081e9
Maccarone, Thomas J.
27e6101c-8fa4-41db-ba75-d2ee3d1a0c53
Waters, Christopher Z.
897683f5-911b-4f4f-9dd3-e4cf02e5e8c1
Kundu, Arunav
ece8dcd2-e6dc-4f02-a90b-016ba9b573ed
Zepf, Stephen E.
108fcc75-6611-48a3-b405-99737b38af85
Knigge, Christian
ac320eec-631a-426e-b2db-717c8bf7857e
Zurek, David R.
9874684b-3f56-4f4f-83f7-7a9c3c657f2b

Peacock, Mark B., Maccarone, Thomas J., Waters, Christopher Z., Kundu, Arunav, Zepf, Stephen E., Knigge, Christian and Zurek, David R. (2008) Wide field CAMera survey of M31 globular clusters: low-mass X-ray binaries. Monthly Notices of the Royal Astronomical Society: Letters, 392 (1), L55-L59. (doi:10.1111/j.1745-3933.2008.00588.x).

Record type: Article

Abstract

We investigate the relationship between low-mass X-ray binaries (LMXBs) and globular clusters (GCs) using United Kingdom Infrared Telescope (UKIRT) observations of M31 and existing Chandra, XMM-Newton and ROSAT catalogues. By fitting King models to these data, we have estimated the structural parameters and stellar collision rates of 239 of its GCs. We show a highly significant trend between the presence of a LMXB and the stellar collision rate of a cluster. The stellar collision rate is found to be a stronger predictor of which clusters will host LMXBs than the host cluster mass. We argue that our results show that the stellar collision rate of the clusters is the fundamental parameter related to the production LMXBs. This is consistent with the formation of LMXBs through dynamical interactions with little direct dependence on the neutron star retention fraction or cluster mass

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More information

Published date: 12 December 2008
Keywords: binaries: general, globular clusters, general, X-rays: binaries

Identifiers

Local EPrints ID: 79557
URI: http://eprints.soton.ac.uk/id/eprint/79557
ISSN: 1745-3933
PURE UUID: 6bf59cd7-0fce-49ea-aaae-2b17273009ce

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Date deposited: 17 Mar 2010
Last modified: 17 Jul 2019 00:11

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