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Phosphorus in the Young Supernova Remnant Cassiopeia A

Koo, Bon-Chul and Lee, Yong-Hyun and Moon, Dae-Sik and Yoon, Sung-Chul and Raymond, John C. (2013) Phosphorus in the Young Supernova Remnant Cassiopeia A. Science, 342 (6164). pp. 1346-1348. ISSN 0036-8075.

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Phosphorus (^(31)P), which is essential for life, is thought to be synthesized in massive stars and dispersed into interstellar space when these stars explode as supernovae (SNe). Here, we report on near-infrared spectroscopic observations of the young SN remnant Cassiopeia A, which show that the abundance ratio of phosphorus to the major nucleosynthetic product iron (^(56)Fe) in SN material is up to 100 times the average ratio of the Milky Way, confirming that phosphorus is produced in SNe. The observed range is compatible with predictions from SN nucleosynthetic models but not with the scenario in which the chemical elements in the inner SN layers are completely mixed by hydrodynamic instabilities during the explosion.

Item Type:Article
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URLURL TypeDescription DOIArticle Paper
Moon, Dae-Sik0000-0003-4200-5064
Additional Information:© 2013 American Association for the Advancement of Science. Received for publication 26 July 2013. Accepted for publication 7 November 2013. This work was supported by Basic Science Research (NRF-2011-0007223) and International Cooperation in Science and Technology (NRF-2010-616-C00020) programs through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, and also by the Korean Federation of Science and Technology Societies (KOFST). D.-S.M. acknowledges support from the the Natural Science and Engineering Research Council of Canada. We thank M. Muno for his help in observations and J.-J. Lee for providing the Chandra 1Ms x-ray images.
Funding AgencyGrant Number
National Research Foundation of KoreaNRF-2011-0007223
National Research Foundation of KoreaNRF-2010-616-C00020
Ministry of Education, Science and Technology (Korea)UNSPECIFIED
Korean Federation of Science and Technology Societies (KOFST)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Issue or Number:6164
Record Number:CaltechAUTHORS:20140108-140548194
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43273
Deposited By: Tony Diaz
Deposited On:15 Jan 2014 16:24
Last Modified:19 Nov 2019 00:27

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