TY - JOUR
T1 - Wide Field CAMera survey of M31 globular clusters
T2 - Low-mass X-ray binaries
AU - Peacock, Mark B.
AU - Maccarone, Thomas J.
AU - Waters, Christopher Z.
AU - Kundu, Arunav
AU - Zepf, Stephen E.
AU - Knigge, Christian
AU - Zurek, David R.
PY - 2009/1
Y1 - 2009/1
N2 - 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.
AB - 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.
KW - Binaries: general
KW - Globular clusters: general
KW - X-rays: binaries
UR - http://www.scopus.com/inward/record.url?scp=77949338067&partnerID=8YFLogxK
U2 - 10.1111/j.1745-3933.2008.00588.x
DO - 10.1111/j.1745-3933.2008.00588.x
M3 - Letter
AN - SCOPUS:77949338067
SN - 1745-3933
VL - 392
SP - L55-L59
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
IS - 1
ER -