Low Mass X-Ray Binaries and Globular Clusters in Virgo Early-Type Galaxies

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Chandra Proposal Id #04600136

Scientific paper

We propose observations of NGC 4526, NGC 4473, and NGC 4762, three optically bright but X-ray faint early-type galaxies in the Virgo cluster. We will detect the Low Mass X-ray Binary (LMXB) population in these galaxies, and determine the luminosities, luminosity function, spectral properties, X-ray colors, and variability of these sources. These galaxies will be observed as part of the Hubble Space Telescope ACS Virgo Survey, which will determine the globular cluster (GC) populations of these galaxies. Previous observations have shown that a high fraction of LMXBs in E/S0 galaxies are located in GCs. We will compare the properties of the GC and non-GC LMXBs, with the aim to understand the origin of LMXBs, and to constrain the evolution of GCs and E/S0 galaxies.

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