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54 papers
Spectra of Hydrogen-Poor Superluminous Supernovae from the Palomar Transient Factory
Robert M. Quimby, Annalisa De Cia, Avishay Gal-Yam +20
Most Type I superluminous supernovae (SLSNe-I) reported to date have been identified by their high peak luminosities and spectra lacking obvious signs of hydrogen. We demonstrate t…
SN 2012aa - a transient between Type Ibc core-collapse and superluminous supernovae
R. Roy, J. Sollerman, J. M. Silverman +21
Context: Research on supernovae (SNe) over the past decade has confirmed that there is a distinct class of events which are much more luminous (by mag) than canonical core-…
Light Curves of 213 Type Ia Supernovae from the ESSENCE Survey
Gautham Narayan, Armin Rest, Brad E. Tucker +34
The ESSENCE survey discovered 213 Type Ia supernovae at redshifts 0.1 < z < 0.81 between 2002 and 2008. We present their R and I-band photometry, measured from images obtained usin…
Metallicity from Type II Supernovae from the (i)PTF
F. Taddia, P. Moquist, J. Sollerman +13
Type IIP supernovae (SNe IIP) have recently been proposed as metallicity () probes. The spectral models of Dessart et al. (2014) showed that the pseudo-equivalent width of Fe II…
Long-rising Type II supernovae from PTF and CCCP
F. Taddia, J. Sollerman, C. Fremling +17
Supernova (SN) 1987A was a peculiar H-rich event with a long-rising (LR) light curve (LC), stemming from a compact blue supergiant star (BSG). Only a few similar events have been p…
Flash Spectroscopy: Emission Lines from the Ionized Circumstellar Material around -Day-Old Type II Supernovae
D. Khazov, O. Yaron, A. Gal-Yam +24
Supernovae (SNe) embedded in dense circumstellar material (CSM) may show prominent emission lines in their early-time spectra ( days after the explosion), owing to recombi…