The cassiopeia A supernova was of type IIb

Oliver Krause, Stephan M. Birkmann, Tomonori Usuda, Takashi Hattori, Miwa Goto, George H. Rieke, Karl A. Misselt

Research output: Contribution to journalArticle

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Abstract

Cassiopeia A is the youngest supernova remnant known in the Milky Way and a unique laboratory for supernova physics. We present an optical spectrum of the Cassiopeia A supernova near maximum brightness, obtained from observations of a scattered light echo more than three centuries after the direct light of the explosion swept past Earth. The spectrum shows that Cassiopeia A was a type IIb supernova and originated from the collapse of the helium core of a red supergiant that had lost most of its hydrogen envelope before exploding. Our finding concludes a long-standing debate on the Cassiopeia A progenitor and provides new insight into supernova physics by linking the properties of the explosion to the wealth of knowledge about its remnant.

Original languageEnglish (US)
Pages (from-to)1195-1197
Number of pages3
JournalScience
Volume320
Issue number5880
DOIs
StatePublished - May 30 2008

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Explosions
Physics
Light
Helium
Hydrogen

ASJC Scopus subject areas

  • General

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Krause, O., Birkmann, S. M., Usuda, T., Hattori, T., Goto, M., Rieke, G. H., & Misselt, K. A. (2008). The cassiopeia A supernova was of type IIb. Science, 320(5880), 1195-1197. https://doi.org/10.1126/science.1155788

The cassiopeia A supernova was of type IIb. / Krause, Oliver; Birkmann, Stephan M.; Usuda, Tomonori; Hattori, Takashi; Goto, Miwa; Rieke, George H.; Misselt, Karl A.

In: Science, Vol. 320, No. 5880, 30.05.2008, p. 1195-1197.

Research output: Contribution to journalArticle

Krause, O, Birkmann, SM, Usuda, T, Hattori, T, Goto, M, Rieke, GH & Misselt, KA 2008, 'The cassiopeia A supernova was of type IIb', Science, vol. 320, no. 5880, pp. 1195-1197. https://doi.org/10.1126/science.1155788
Krause O, Birkmann SM, Usuda T, Hattori T, Goto M, Rieke GH et al. The cassiopeia A supernova was of type IIb. Science. 2008 May 30;320(5880):1195-1197. https://doi.org/10.1126/science.1155788
Krause, Oliver ; Birkmann, Stephan M. ; Usuda, Tomonori ; Hattori, Takashi ; Goto, Miwa ; Rieke, George H. ; Misselt, Karl A. / The cassiopeia A supernova was of type IIb. In: Science. 2008 ; Vol. 320, No. 5880. pp. 1195-1197.
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