Iron Mass to Light Ratios in Groups and Clusters of Galaxies

Details Iron Mass to Light Ratios in Groups and Clusters of Galaxies Iron Mass to Light Ratios in Groups and Clusters of Galaxies

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.511f&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

We perform a spatially resolved X-ray spectroscopy of a set of 11 relaxed clusters of galaxies observed by both ROSAT/PSPC and ASCA/SIS instruments. Using advance modeling of data, including effects of PSF, we constrain the spatial distribution of Si and Fe. Employing the theoretical prescriptions for SN II and SN Ia element yields and optical measurements, we qualitatively estimate the behavior of Iron Mass-to-Light Ratio (IMLR) decomposed on the SN type. Type II IMLR at a given part of a virial radius increases with the system's temperature. While Type II IMLR increases with radius and saturates at value of ~0.03 for the hottest systems, Type Ia IMLR decreases proportionally to spatial distribution of fraction of early-type galaxies.

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