We present very early, high-cadence photometric observations of the nearby Type Ia SN
2017cbv. The light curve is unique in that it has a blue bump during the first five days of …

We present BVRI and unfiltered light curves of 93 Type Ia supernovae (SNe Ia) from the Lick
Observatory Supernova Search (LOSS) follow-up program conducted between 2005 and …

We present optical follow-up imaging obtained with the Katzman Automatic Imaging
Telescope, Las Cumbres Observatory Global Telescope Network, Nickel Telescope, Swope …

Recent studies have shown how the distribution of 56 Ni within the ejected material of type
Ia supernovae can have profound consequences on the observed light curves. Observations …

Abstract Early-phase Type Ia supernovae (SNe Ia), especially those with luminosity
enhancement within the first few days of explosions (" early-excess SNe Ia"), play an …

We present 637 low-redshift optical spectra collected by the Berkeley Supernova Ia Program
(BSNIP) between 2009 and 2018, almost entirely with the Kast double spectrograph on the …

The nondetection of companion stars in SN Ia progenitor systems lends support to the notion
of double-degenerate systems and explosions triggered by the merging of two white dwarfs …

We report deep radio observations of nearby Type Ia supernovae (SNe Ia) with the
electronic Multi-Element Radio Linked Interferometer Network and the Australia Telescope …

It has been widely accepted that Type Ia supernovae (SNe Ia) are thermonuclear explosions
of a CO white dwarf. However, the natures of the progenitor system (s) and explosion …

We present extensive optical photometric and spectroscopic observations of the high-
velocity (HV) Type Ia supernova (SN Ia) 2017fgc, covering the phase from∼ 12 days before …