X-Ray Binaries in Early Type Galaxies and the Globular Cluster Connection
نویسندگان
چکیده
منابع مشابه
Low Mass X-ray Binaries and Globular Clusters in Early-Type Galaxies
A high fraction of the Low Mass X-ray Binaries (LMXBs) in early-type galaxies are associated with globular clusters (GCs). Here, we discuss the correlations between LMXBs and GCs in a sample of four early-type galaxies with X-ray source lists determined from Chandra observations. There is some evidence that the fraction of LMXBs associated with globular clusters (fX−GC) increases along the Hubb...
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The X-ray emission from normal elliptical galaxies has two major components: soft (kT ≈ 0.2 − 1 keV) emission from diffuse gas and harder (kT ≈ 6 keV) emission from populations of accreting (lowmass) stellar X-ray binaries (LMXB). If the LMXB population is intimately tied to the field stellar population in a galaxy, its aggregate X-ray luminosity is expected to be simply proportional to the opt...
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Chandra observations of globular clusters provide insight into the formation, evolution, and X-ray emission mechanisms of X-ray binary populations. Our recent (2002) deep observations of 47 Tuc allow detailed study of its populations of quiescent LMXBs, CVs, MSPs, and active binaries (ABs). First results include the confirmation of a magnetic CV in a globular cluster, the identification of 31 a...
متن کاملLow-mass X-ray Binaries and Globular Clusters in Early-type Galaxies. Ii. Globular Cluster Candidates and Their Mass-metallicity Relation
We present an astrometry and photometry catalogue of globular cluster (GC) candidates detected with HST WFPC2 in a sample of 19 early-type galaxies, appropriate for comparison to the lowmass X-ray binary (LMXB) populations observed with Chandra. In a companion paper, we present the Chandra data and investigate the relation between these populations. We demonstrate that, although there is little...
متن کاملThe globular clusters-stellar haloes connection in early type galaxies
This paper explores if, and to what an extent, the stellar populations of early type galaxies can be traced through the colour distribution of their globular cluster systems. The analysis, based on a galaxy sample from the Virgo ACS data, is an extension of a previous approach that has been successful in the cases of the giant ellipticals NGC 1399 and NGC 4486, and assumes that the two dominant...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 2004
ISSN: 0252-9211
DOI: 10.1017/s0252921100151966