ASCA Measurements of Silicon and Iron Abundances in the Intracluster Medium

Fukazawa Yasushi; Makishima Kazuo; Tamura Takayuki; Ezawa Hajime; Xu Haiguang; Ikebe Yasushi; Kikuchi Kenichi; Ohashi Takaya

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ASCA Measurements of Silicon and Iron Abundances in the Intracluster Medium

机译：集群内介质中硅和铁丰度的ASCA测量

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WeanalyzedtheASCAX-raydataof40nearbyclustersofgalaxies,whoseintracluster-mediumtemperaturedistributesintherangeof0.9a€“10keV.WemeasuredtheSiandFeabundancesoftheintraclustermedium,spatiallyaveragingovereachcluster,butexcludingthecentrala??0.15h50a?’1Mpcregioninordertoavoidanypossibleabundancegradientsandcomplextemperaturestructures.TheFeabundancesoftheseclustersare0.2a€“0.3solar,withonlyweakdependenceonthetemperatureoftheintraclustermedium,henceontheclusterrichness.Incontrast,theSiabundanceisobservedtoincreasefrom0.3to0.6a€“0.7solarfromthepoorertoricherclusters.Theseresultssuggestthatthesupernovaeofbothtype-Iaandtype-IIsignificantlycontributetothemetalenrichmentoftheintraclustermedium,withtherelativecontributionoftype-IIsupernovaeincreasingtowardsricherclusters.Wesuggestapossibilitythataconsiderablefractionoftype-IIsupernovaproductsescapedfrompoorersystems.

机译：WeanalyzedtheASCAX-raydataof40nearbyclustersofgalaxies，whoseintracluster-mediumtemperaturedistributesintherangeof0.9a€“10keV.WemeasuredtheSiandFeabundancesoftheintraclustermedium，spatiallyaveragingovereachcluster，butexcludingthecentrala ?? 0.15h50a？1Mpcregioninordertoavoidanypossibleabundancegradientsandcomplextemperaturestructures.TheFeabundancesoftheseclustersare0.2a€“0.3solar，withonlyweakdependenceonthetemperatureoftheintraclustermedium，henceontheclusterrichness.Incontrast，theSiabundanceisobservedtoincreasefrom0.3to0.6a€“0.7solarfromthepoorertoricherclusters。这些结果表明，Ia型和II型超新星对惰性中间介质的金属富集起着重要作用，而II型超新星的相对贡献则朝着更浓的团簇方向发展。我们认为，从II型超新星产品中分离出的可观分数应该被忽略。

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《PASJ: Publications of the Astronomical Society of Japan》 |1998年第1期|共页
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Fukazawa Yasushi; Makishima Kazuo; Tamura Takayuki; Ezawa Hajime; Xu Haiguang; Ikebe Yasushi; Kikuchi Kenichi; Ohashi Takaya;
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2. REDSHIFT EVOLUTION IN THE IRON ABUNDANCE OF THE INTRACLUSTER MEDIUM [J] . Michael E. Anderson, Joel N. Bregman, Suzanne C. Butler, The Astrophysical journal . 2009,第1期

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3. REDSHIFT EVOLUTION IN THE IRON ABUNDANCE OF THE INTRACLUSTER MEDIUM [J] . Michael E. Anderson, Joel N. Bregman, Suzanne C. Butler, The Astrophysical journal . 2009,第1期

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4. Suzaku observations of Kα lines of iron from intracluster medium of the Coma cluster [C] . Takuya Sato, Kyoko Matsushita, Naomi Ota, Suzaku international conference on energetic cosmos : from Suzaku to ASTRO-H . 2010

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5. Measurement of the relative abundances of the ultra-heavy galactic cosmic rays (30 ≤ Z ≤ 40) with the Trans-Iron Galactic Element Recorder (TIGER) instrument. [D] . Rauch, Brian Flint. 2008

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6. THE ABUNDANCES OF IRON AND SILICON IN THE SUN [O] . L. H. Aller, B. J. OMara, S. Little 1964

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7. ASCA Measurements of Silicon and Iron Abundances in the Intracluster Medium [O] . Yasushi Fukazawa, Kazuo Makishima, Takayuki Tamura, 1998

机译：集群内介质中硅和铁丰度的ASCA测量
8. Elemental Abundances in the Intracluster Medium as Observed with XMM-Newton [R] . Tamura, T., Kaastra, J. S., den Herder, J. W. A., 2004

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ASCA Measurements of Silicon and Iron Abundances in the Intracluster Medium

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