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A statistical analysis of circumstellar material in Type Ia supernovae
Kate Maguire, Mark Sullivan, Ferdinando Patat +42
A key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na I D absorption lines, interpreted as evidence o…
A multi-wavelength investigation of the radio-loud supernova PTF11qcj and its circumstellar environment
A. Corsi, E. O. Ofek, A. Gal-Yam +20
We present the discovery, classification, and extensive panchromatic (from radio to X-ray) follow-up observations of PTF11qcj, a supernova discovered by the Palomar Transient Facto…
Type Ia Supernovae Strongly Interacting with Their Circumstellar Medium
Jeffrey M. Silverman, Peter E. Nugent, Avishay Gal-Yam +31
Owing to their utility for measurements of cosmic acceleration, Type Ia supernovae (SNe) are perhaps the best-studied class of SNe, yet the progenitor systems of these explosions l…
Late-Time Spectral Observations of the Strongly Interacting Type Ia Supernova PTF11kx
Jeffrey M. Silverman, Peter E. Nugent, Avishay Gal-Yam +6
PTF11kx was a Type Ia supernova (SN Ia) that showed time-variable absorption features, including saturated Ca II H&K lines that weakened and eventually went into emission. The stre…