AAS 205th Meeting, 9-13 January 2005
Session 92 Ellipticals and Early Types
Poster, Wednesday, January 12, 2005, 9:20am-6:30pm, Exhibit Hall

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[92.09] Diffuse X-ray Emission from E/S0 Galaxies

D. G. Myer (University of California, San Diego), E. M. Schlegel (Harvard-Smithsonian CfA)

We analyze the diffuse X-ray emission from a sample of nearby (D < 25 Mpc) galaxies in the Chandra archive. Using multiple component spectral analysis, we derive temperature and luminosity values for this emission and demonstrate that nearby, early-type galaxies contain a measurable diffuse component down to the lowest blue luminosity galaxies available in the archive (LB=7.4). We find an average temperature for the diffuse emission of kT=0.366± 0.207~keV. We fit a variety of luminosity relations and compare our results with previous catalogs. In particular, we derive a value of 1.37±0.19 for the slope of the LX:LB relation and find that the evidence for a break in this relation is not strong in our sample.

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.