Spatial distribution of nucleosynthesis products in cassiopeia a

Comparison between observations and 3D explosion models

Patrick Young, Carola I. Ellinger, Francis Timmes, David Arnett, Chris L. Fryer, Gaberiel R. Rockefeller, Aimee Hungerford, Steven Diehl, Michael Bennet, Raphael Hirschi, Marco Pignatari, Falk Herwig, Georgios Magkotsios

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationProceedings of Science
StatePublished - 2008
Event10th Symposium on Nuclei in the Cosmos, NIC 2008 - Mackinac Island, MI, United States
Duration: Jul 27 2008Aug 1 2008

Other

Other10th Symposium on Nuclei in the Cosmos, NIC 2008
CountryUnited States
CityMackinac Island, MI
Period7/27/088/1/08

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explosion
spatial distribution
ejecta
spatial resolution
comparison
product
indicator

ASJC Scopus subject areas

  • General

Cite this

Young, P., Ellinger, C. I., Timmes, F., Arnett, D., Fryer, C. L., Rockefeller, G. R., ... Magkotsios, G. (2008). Spatial distribution of nucleosynthesis products in cassiopeia a: Comparison between observations and 3D explosion models. In Proceedings of Science

Spatial distribution of nucleosynthesis products in cassiopeia a : Comparison between observations and 3D explosion models. / Young, Patrick; Ellinger, Carola I.; Timmes, Francis; Arnett, David; Fryer, Chris L.; Rockefeller, Gaberiel R.; Hungerford, Aimee; Diehl, Steven; Bennet, Michael; Hirschi, Raphael; Pignatari, Marco; Herwig, Falk; Magkotsios, Georgios.

Proceedings of Science. 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Young, P, Ellinger, CI, Timmes, F, Arnett, D, Fryer, CL, Rockefeller, GR, Hungerford, A, Diehl, S, Bennet, M, Hirschi, R, Pignatari, M, Herwig, F & Magkotsios, G 2008, Spatial distribution of nucleosynthesis products in cassiopeia a: Comparison between observations and 3D explosion models. in Proceedings of Science. 10th Symposium on Nuclei in the Cosmos, NIC 2008, Mackinac Island, MI, United States, 7/27/08.
Young, Patrick ; Ellinger, Carola I. ; Timmes, Francis ; Arnett, David ; Fryer, Chris L. ; Rockefeller, Gaberiel R. ; Hungerford, Aimee ; Diehl, Steven ; Bennet, Michael ; Hirschi, Raphael ; Pignatari, Marco ; Herwig, Falk ; Magkotsios, Georgios. / Spatial distribution of nucleosynthesis products in cassiopeia a : Comparison between observations and 3D explosion models. Proceedings of Science. 2008.
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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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AU - Young, Patrick

AU - Ellinger, Carola I.

AU - Timmes, Francis

AU - Arnett, David

AU - Fryer, Chris L.

AU - Rockefeller, Gaberiel R.

AU - Hungerford, Aimee

AU - Diehl, Steven

AU - Bennet, Michael

AU - Hirschi, Raphael

AU - Pignatari, Marco

AU - Herwig, Falk

AU - Magkotsios, Georgios

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