Intermediate-Age Elliptical Galaxies

Details Intermediate-Age Elliptical Galaxies Intermediate-Age Elliptical Galaxies

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2464k&link_type=abstract

Chandra Proposal ID #09910432

Computer Science

Chandra Proposal Id #09910432

Scientific paper

We propose to observe intermediate-age elliptical galaxies, with Chandra for a total exposure of 280ks. Existing Chandra observations of a small number of similar galaxies suggest very intriguing age-related effects when compared with those of typical old ellipticals: (1) a flatter luminosity function of LMXBs with a larger number of luminous X-ray sources and (2) an asymmetric spatial distribution of LMXBs. We will confirm these signatures of star formation episodes to provide the first X-ray age-estimator applied to elliptical galaxies and to set strong constraints on theoretical models of X-ray binary formation.

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