Spectroscopic observations and analysis of the unusual type Ia SN 1999ac

We present optical spectra of the peculiar Type la supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several respects. Prior to B-band maximum, the spectra resemble those of SN 1999aa, a slowly declining event, but po...

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Bibliographic Details
Main Authors:	Garavini, G, Aldering, G, Amadon, A, Amanullah, R, Astier, P, Balland, C, Blanc, G, Conley, A, Dahlen, T, Deustua, SE, Ellis, R, Fabbro, S, Fadeyev, V, Fan, X, Folatelli, G, Frye, B, Gates, E, Gibbons, R, Goldhaber, G, Goldman, B, Goobar, A, Groom, D, Haissinski, J, Hardin, D, Hook, I
Format:	Journal article
Language:	English
Published:	2005

Spectroscopic observations and analysis of the unusual type Ia SN 1999ac

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