Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20917502k&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #175.02; Bulletin of the American Astronomical Society,
Other
Scientific paper
High resolution images from the Chandra X-ray Telescope have discovered large populations of low mass X-ray binaries (LMXBs) in nearby galaxies. Elliptical and S0 galaxies are ideal for studying these bright, close binaries that are also tracers of past high mass star formation, because there is no confusion from ongoing star formation. Early type galaxies are also particularly rich in globular clusters. Recent studies have showed remarkably, that half the LMXBs in these galaxies are associated with globular clusters. The specific characteristics of individual globular clusters, such as metallicity and age, and the wide range of globular cluster properties in these galaxies, provide a unique window into the formation and evolutionary histories of LMXBs. I review recent studies of the LMXB-globular cluster connection in early type galaxies and their implications. These studies have uncovered some expected correlations between LMXBs and globular cluster properties such as the mass, a surprisingly strong correlation with metallicity, and varying claims for other factors such as galactocentric distance, cluster size, age and the interaction rate. Although it has been suggested that a possible solution to the tricky dynamical problem of creating LMXBs in the field is that is that they are an ejected globular cluster population, recent studies using a variety of techniques appear to be reaching a consensus that the majority of field LMXBs are in fact formed in situ.
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