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Low luminosity Type II supernovae III. SN 2018hwm, a faint event with an unusually long plateau
A. Reguitti, M. L. Pumo, P. A. Mazzali +9
In this work, we present photometric and spectroscopic data of the low-luminosity Type IIP supernova (SN) 2018hwm. The object shows a faint ( mag) and very long (130…
The First Data Release of CNIa0.02 -- A Complete Nearby (Redshift <0.02) Sample of Type Ia Supernova Light Curves
Ping Chen, Subo Dong, C. S. Kochanek +41
The CNIa0.02 project aims to collect a complete, nearby sample of Type Ia supernovae (SNe Ia) light curves, and the SNe are volume-limited with host-galaxy redshifts z_host < 0.02.…
SN 2018gjx reveals that some SNe Ibn are SNe IIb exploding in dense circumstellar material
S. J. Prentice, K. Maguire, I. Boian +27
We present the data and analysis of SN 2018gjx, an unusual low-luminosity transient with three distinct spectroscopic phases. Phase I shows a hot blue spectrum with signatures of i…
PTF11rka: an interacting supernova at the crossroads of stripped-envelope and H-poor super-luminous stellar core collapses
Elena Pian, Paolo A. Mazzali, Takashi J. Moriya +17
The hydrogen-poor supernova PTF11rka (z = 0.0744), reported by the Palomar Transient Factory, was observed with various telescopes starting a few days after the estimated explosion…
The Spectacular Ultraviolet Flash From the Peculiar Type Ia Supernova 2019yvq
A. A. Miller, M. R. Magee, A. Polin +42
Early observations of Type Ia supernovae (SNeIa) provide essential clues for understanding the progenitor system that gave rise to the terminal thermonuclear explosion. We pres…
The intermediate nebular phase of SN 2014J: onset of clumping as the source of recombination
P. A. Mazzali, I. Bikmaev, R. Sunyaev +6
At the age of about 1 year, the spectra of most Type Ia supernovae are dominated by strong forbidden nebular emission lines of FeII and FeIII. Later observations (at about 2 years)…