The Very Faintest X-Ray Faint Early-Type Galaxies

Details The Very Faintest X-Ray Faint Early-Type Galaxies The Very Faintest X-Ray Faint Early-Type Galaxies

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..641i&link_type=abstract

Chandra Proposal ID #02600578

Physics

Chandra Proposal Id #02600578

Scientific paper

We propose Chandra observations of two very X-ray faint early-type galaxies (NGC3115 and NGC4526) whose X-ray emission is suspected to be nearly all stellar (LMXB) in nature. The L_X/L_B ratios of these galaxies are considerably lower than that of NGC~4697 and the bulge of M31, two early-type systems whose X-ray emission is known to be primarily stellar. This indicates a radically different luminosity distribution function for LMXBs in these systems, which is surprising considering the uniformity of stellar populations in early-type systems. We will resolve the LMXBs in these galaxies in order to discover why these galaxies are producing significantly fewer and/or less luminous LMXBs. We will also search for supersoft sources and derive the temperature of any hot gas in these systems.

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