Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· arXiv e-print (arXiv:astro-ph/9706138)
· On-line Data
· References in the article
· Citations to the Article (117) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (3)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Supernovae Types Ia/II and intracluster medium enrichment
Authors:
Gibson, B. K.; Loewenstein, M.; Mushotzky, R. F.
Affiliation:
AA(Mount Stromlo and Siding Spring Observatories, Australian National University, Weston Creek PO, ACT, Australia 2611 ), AB(Laboratory for High Energy Astrophysics, NASA/GSFC, Code 662, Greenbelt, Maryland 20771, USA ), AC(Laboratory for High Energy Astrophysics, NASA/GSFC, Code 662, Greenbelt, Maryland 20771, USA )
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 290, Issue 4, pp. 623-628. (MNRAS Homepage)
Publication Date:
10/1997
Origin:
MNRAS
MNRAS Keywords:
NUCLEAR REACTIONS, NUCLEOSYNTHESIS, ABUNDANCES, SUPERNOVAE: GENERAL, GALAXIES: ELLIPTICAL AND LENTICULAR, CD, GALAXIES: EVOLUTION, INTERGALACTIC MEDIUM, X-RAYS: GALAXIES
Bibliographic Code:
1997MNRAS.290..623G

Abstract

We re-examine the respective roles played by supernovae (SNe) Types Ia and II in enriching the intracluster medium (ICM) of galaxy clusters in the light of the recent downward shift of the ASCA abundance ratios of alpha-elements to iron favoured by Ishimaru & Arimoto. Because of this shift, Ishimaru & Arimoto conclude that >~50 per cent of the ICM iron must have originated from within Type Ia SNe progenitors. A point not appreciated in their study, nor in most previous analyses, is the crucial dependence of such a conclusion upon the adopted massive star physics. Employing several alternative Type II SN yield compilations, we demonstrate how uncertainties in the treatment of convection and mass-loss can radically alter our perception of the relative importance of Type Ia and II SNe as ICM polluters. If mass-loss of the form favoured by Maeder or convection of the form favoured by Arnett is assumed, the effect upon the oxygen yields would lead us to conclude that Type Ia SNe play no part in polluting the ICM, in contradiction with Ishimaru & Arimoto. Apparent dichotomies still exist (e.g., the mean ICM neon-to-iron ratio implies a ~100 per cent Type II Fe origin, while the mean sulphur ratio indicates a ~100 per cent Type Ia origin) that cannot be reconciled with the currently available yield tables.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints