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From Shock Breakout to Peak and Beyond: Extensive Panchromatic Observations of the Type Ib Supernova 2008D associated with Swift X-ray Transient 080109
Maryam Modjaz, W. Li, N. Butler +38
We present extensive early photometric (ultraviolet through near-infrared) and spectroscopic (optical and near-infrared) data on supernova (SN) 2008D as well as X-ray data analysis…
Low Carbon Abundance in Type Ia Supernovae
G. H. Marion, P. Hoeflich, J. C. Wheeler +3
We investigate the quantity and composition of unburned material in the outer layers of three normal Type Ia supernovae (SNe Ia): 2000dn, 2002cr and 20 04bw. Pristine matter from a…
SN 2003du: Signatures of the Circumstellar Environment in a Normal Type Ia Supernova?
C. L. Gerardy, P. Hoeflich, R. A. Fesen +6
We present observations of the Type Ia supernova 2003du and report the detectionof an unusual, high-velocity component in the Ca II infrared triplet, similar tofeatures previously…
Near Infrared Spectra of Type Ia Supernovae
G. H. Marion, P. Höflich, W. D. Vacca +1
We report near infrared (NIR) spectroscopic observations of twelve ``Branch-normal'' Type Ia supernovae (SNe Ia) which cover the wavelength region from 0.8-2.5 microns. Our sample…
Constraints on Type Ia Supernovae from Near Infrared Spectra
G. H. Marion, P. Hoeflich, J. C. Wheeler
We describe a research program to improve the understanding of Type Ia Supernovae (SNe Ia) by modeling and observing near infrared (NIR) spectra of these events. The NIR between 0.…
Evidence Against an Association Between Gamma-Ray Bursts and Type I Supernovae
C. Graziani, D. Q. Lamb, G. H. Marion
We present a rigorous method, based on Bayesian inference, for calculating the odds favoring the hypothesis that any particular class of astronomical transients produce gamma-ray b…