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29 March 2024
 
  » arxiv » astro-ph/0005298

 Article overview


Spectrum Analysis of the Type Ib Supernova 1999dn: Probable Identifications of C II and H-alpha
J. S. Deng ; Y. L. Qiu ; J. Y. Hu ; K. Hatano ; D. Branch ;
Date 15 May 2000
Subject astro-ph
AbstractLow resolution spectra of SN 1999dn at early times are presented and compared with synthetic spectra generated with the parameterized supernova synthetic-spectrum code SYNOW. We find that the spectra of SN 1999dn strongly resemble those of SN 1997X and SN 1984L, and hence we classify it as a Type Ib event. Line-identifications are established through spectrum synthesis. Strong evidence of both H-alpha and C II 6580 is found. We infer that H-alpha appears first, before the time of maximum brightness, and then is blended with and finally overwhelmed by the C II line after maximum; this favors a thin high-velocity hydrogen skin in this Type Ib supernova.
Source arXiv, astro-ph/0005298
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