The distributions of hot gas and iron in the Virgo cluster

Details The distributions of hot gas and iron in the Virgo cluster The distributions of hot gas and iron in the Virgo cluster

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasj...45..669o&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 45, no. 5, p. 669-686

Other

14

Abundance, Astronomical Models, Distribution (Property), High Temperature Gases, Iron, Virgo Galactic Cluster, Galactic Evolution, Galactic Mass, Interstellar Magnetic Fields, Luminosity, X Rays

Scientific paper

This is the first attempt to explain the observed iron radial gradient in the hot gas of the Virgo cluster. By combining the available models of elliptical galaxy formation with the observed luminosity distribution of galaxies, we show that the radial distribution as well as the total amount of iron observed in the Virgo intracluster gas can be explained by the ejection of iron from the member galaxies with an initial mass function (IMF) exponent of approximately 1. It is also found that the iron distribution is similar to the luminosity distribution of early type galaxies, while it is quite different from that of late type galaxies. These results lend strong support to the iron enrichment of the intracluster medium through the galactic wind from the early type galaxies. On the other hand, the total gas mass supplied by these models is less than the total mass of the X-ray emitting gas in the Virgo cluster by an order of magnitude, as shown in previous studies. The implications of these results are discussed.

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