Reconsideration on the iron abundance in clusters of galaxies

Details Reconsideration on the iron abundance in clusters of galaxies Reconsideration on the iron abundance in clusters of galaxies

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasj...46..447m&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 46, no. 5, p. 447-460

Astronomy and Astrophysics

Astronomy

20

Abundance, Astronomical Models, Chemical Evolution, Elliptical Galaxies, Galactic Clusters, Galactic Evolution, Hubble Constant, Intergalactic Media, Iron, Luminosity, Metallicity, Stellar Evolution, Stellar Mass, Stellar Winds, Bremsstrahlung, Heao 2, Hydrogen, Magnesium, Oxygen, Ratios, Stellar Color, Stellar Magnitude, X Ray Astronomy, X Ray Spectra

Scientific paper

We reconsider the origin of iron in clusters of galaxies. First, we point out that interpretation of various observational quantities is critically influenced by the value of the Hubble constant. In particular, since the ratio of the iron mass to the stellar mass of the galaxies is inversely proportional to the 1.5 power of the Hubble constant, this ratio can be lower than the conventionally estimated value, assuming H0 = 50 (km/(sec Mpc)). Furthermore, we reconsider the chemical evolution model of elliptical galaxies, by treating the galactic-wind time as a free parameter and by taking into account the ejection of the gas enriched by the type Ia SNe into the intracluster medium after a galactic wind occurs. We show that the iron mass in clusters of galaxies can be explained within the standard chemical evolution models.

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