Modeling The Hot Gas Component Within Elliptical Galaxies

Details Modeling The Hot Gas Component Within Elliptical Galaxies Modeling The Hot Gas Component Within Elliptical Galaxies

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.9212i&link_type=abstract

American Astronomical Society Meeting 205, #92.12; Bulletin of the American Astronomical Society, Vol. 36, p.1491

Astronomy and Astrophysics

Astronomy

Scientific paper

Despite years of effort, the temperature, metallicity, and cooling rate of hot X-ray--emitting gas within the cores of elliptical galaxies is still somewhat poorly known. Previous studies have attempted to fit a variety of spectral models to the gas: single component thermal models, multiple component models, models with variable metallicity, cooling flow models, etc. While some of the models have been successful in describing the spectrum of the gas in individual galaxies by individual authors, there is currently not a universally accepted spectral model to describe the gas. Here, we analyze the X-ray spectra of a sample of X-ray bright ellipticals observed with Chandra and XMM-Newton in order to find such a spectral model, and better understand the origin and evolution of hot gas within elliptical galaxies.

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