P. Young, C. Ellinger, F. Timmes, D. Arnett, C. Fryer, G. Rockefeller, A. Hungerford, S. Diehl, M. Bennett, R. Hirschi, M. Pignatari, F. Herwig, Georgios Magkotsios The NuGrid Collaboration, Los Alamos National Laboratory, A. S. University, Keele University, U. Victoria, U. N. Dame, U. Arizona
{"title":"Spatial Distribution of Nucleosynthesis Products in Cassiopeia A: Comparison Between Observations and 3D Explosion Models","authors":"P. Young, C. Ellinger, F. Timmes, D. Arnett, C. Fryer, G. Rockefeller, A. Hungerford, S. Diehl, M. Bennett, R. Hirschi, M. Pignatari, F. Herwig, Georgios Magkotsios The NuGrid Collaboration, Los Alamos National Laboratory, A. S. University, Keele University, U. Victoria, U. N. Dame, U. Arizona","doi":"10.22323/1.053.0020","DOIUrl":null,"url":null,"abstract":"We examine observed heavy element abundances in the Cassiopeia A supernova remnant as a constraint on the nature of the Cas A supernova. We compare bulk abundances from 1D and 3D explosion models and spatial distribution of elements in 3D models with those derived from X-ray observations. We also examine the cospatial production of 26Al with other species. We find that the most reliable indicator of the presence of 26Al in unmixed ejecta is a very low S/Si ratio (~0.05). Production of N in O/S/Si-rich regions is also indicative. The biologically important element P is produced at its highest abundance in the same regions. Proxies should be detectable in supernova ejecta with high spatial resolution multiwavelength observations.","PeriodicalId":8453,"journal":{"name":"arXiv: Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2008-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv: Astrophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22323/1.053.0020","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
We examine observed heavy element abundances in the Cassiopeia A supernova remnant as a constraint on the nature of the Cas A supernova. We compare bulk abundances from 1D and 3D explosion models and spatial distribution of elements in 3D models with those derived from X-ray observations. We also examine the cospatial production of 26Al with other species. We find that the most reliable indicator of the presence of 26Al in unmixed ejecta is a very low S/Si ratio (~0.05). Production of N in O/S/Si-rich regions is also indicative. The biologically important element P is produced at its highest abundance in the same regions. Proxies should be detectable in supernova ejecta with high spatial resolution multiwavelength observations.
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