Low Mass X-ray Binaries and Globular Clusters in the Early-Type Galaxy NGC 4365

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Chandra Proposal Id #06620137

Scientific paper

A previous Chandra image of the X-ray faint E3 elliptical, NGC 4365, mainly resolved it into low mass X-ray binaries (LMXBs). Most of the LMXBs are located in globular clusters (GCs), but previous samples were limited by the number of LMXBs and HST coverage of only the NW quarter. New Chandra observations will detect ~240 LMXBs down to 3.5E37 ergs/s and nearly triple the number of GC-LMXBs. NGC 4365 is one of the brightest galaxies observed in the Hubble ACS Virgo Cluster Survey, which has yielded GC information for the entire galaxy. We will compare the properties of GCs, LMXBs, and their union with the aim of understanding the origin of LMXBs and constraining the evolution of GCs. Multiple observations will allow the variability of sources to be assessed on minute to 4 year timescales.

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