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The Distance to SN 1999em in NGC 1637 from the Expanding Photosphere Method
Douglas C. Leonard, Alexei V. Filippenko, Elinor L. Gates +13
We present 30 optical spectra and 49 photometric epochs sampling the first 517 days after discovery of supernova (SN) 1999em, and derive its distance through the expanding photosph…
Optical and Ultraviolet Spectroscopy of SN 1995N: Evidence for Strong Circumstellar Interaction
Claes Fransson, Roger A. Chevalier, Alexei V. Filippenko +9
Optical and ultraviolet observations of the Type IIn supernova 1995N at epochs between 321 and 1799 days after the explosion show three distinct velocity components. The narrow lin…
The Unique Type Ia Supernova 2000cx in NGC 524
Weidong Li, Alexei V. Filippenko, Elinor Gates +8
We present extensive photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2000cx in the S0 galaxy NGC 524, which reveal it to be peculiar. Photometrically, S…
Direct Analysis of Spectra of Type Ib Supernovae
David Branch
Synthetic spectra generated with the parameterized supernova synthetic-spectrum code SYNOW are compared to photospheric-phase spectra of Type Ib supernovae (SNe Ib). Although the s…
Optical Spectroscopy of Type Ib/c Supernovae
Thomas Matheson, Alexei V. Filippenko, Weidong Li +2
We present 84 spectra of Type Ib/c and Type IIb supernovae (SNe), describing the individual SNe in detail. The relative depths of the helium absorption lines in the spectra of the…