A multi-instrument comparison of the hot ISM in elliptical galaxies

Details A multi-instrument comparison of the hot ISM in elliptical galaxies A multi-instrument comparison of the hot ISM in elliptical galaxies

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..280b&link_type=abstract

Highlights of Astronomy, Volume 15, p. 280-280

Astronomy and Astrophysics

Astronomy

X-Rays: Galaxies, Galaxies: Ism

Scientific paper

Consistent metallicities are now obtained in X-ray bright galaxies, using the Chandra ACIS and XMM PN, MOS and RGS detectors. With two temperature models, the Fe metallicity of the gas is typically solar, similar to Mg, Si, and S, but the O abundance is about half solar. These values are in conflict with models, which predict a metallicity 3-5 times higher and a Fe to O ratio near unity. This suggests that a significant fraction of metals are not becoming mixed into the hot galactic atmosphere.

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