The Cassiopeia A supernova was of type IIb.
Science
; 320(5880): 1195-7, 2008 May 30.
Article
en En
| MEDLINE
| ID: mdl-18511684
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.
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MEDLINE
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En
Revista:
Science
Año:
2008
Tipo del documento:
Article
País de afiliación:
Alemania