Implications of Abundance Gradients in Intracluster Gas release_rev_c73925a0-ab8f-4b04-8e0a-f1e64f7a4f69

by Raymond E. White III U. Alabama

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abstracts[] {'sha1': '3e17bf34d5222b06388441099722594a83d73657', 'content': 'Analysis of spatially resolved ASCA spectra of the intracluster gas in Abell\n496 confirms that metal abundances increase toward the center. We also find\nspatial gradients in several abundance ratios, indicating that the fraction of\niron from SN Ia increases toward the cluster center. The dominant metal\nenrichment mechanism near the cluster center must therefore be different than\nin the outer parts. We show that ram pressure stripping of gas from cluster\ngalaxies cannot account for the central abundance enhancement. We suggest that\ntwo successive stages of galactic winds contaminate intracluster gas:\nprotogalactic winds driven by SN II, followed by less energetic winds driven by\nSN Ia, which have longer lived progenitors than SN II. The less energetic\nsecondary wind from a cD galaxy may be suppressed, due to its location at the\ncluster center, leading to the observed central enhancement of SN Ia ejecta.', 'mimetype': 'text/plain', 'lang': 'en'}
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contribs[] {'index': 0, 'creator_id': None, 'creator': None, 'raw_name': 'Raymond E. White III U.\n Alabama', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
ext_ids {'doi': None, 'wikidata_qid': None, 'isbn13': None, 'pmid': None, 'pmcid': None, 'core': None, 'arxiv': 'astro-ph/0001304v1', 'jstor': None, 'ark': None, 'mag': None, 'doaj': None, 'dblp': None, 'oai': None, 'hdl': None}
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language en
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release_date 2000-01-18
release_stage submitted
release_type article
release_year 2000
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title Implications of Abundance Gradients in Intracluster Gas
version v1
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work_id wga327d6mbfvhlxuj43yfe22ma
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arxiv.base_id astro-ph/0001304
arxiv.categories ['astro-ph']
arxiv.comments 4 LaTeX pages (conf-X.sty) with two embedded PS figures; to appear in "Large Scale Structure in the X-ray Universe," eds. M. Plionis & I. Georgantopoulos (Paris: Editions Frontieres), in press