We present the densely sampled early light curve of the Type II supernova (SN) 2023ixf, first
observed within hours of explosion in the nearby Pinwheel Galaxy (Messier 101; 6.7 Mpc) …

We present a series of high-resolution echelle spectra of SN 2023ixf in M101, obtained
nightly during the first week or so after discovery using PEPSI on the Large Binocular …

SN 2023ixf was discovered in M101 within a day of the explosion and rapidly classified as a
Type II supernova with flash features. Here we present ultraviolet (UV) spectra obtained with …

We present optical, ultraviolet, and infrared data of the type II supernova (SN II) 2020jfo at
14.5 Mpc. This wealth of multiwavelength data allows us to compare different metrics …

The core-collapse supernova of a massive star rapidly brightens when a shock, produced
following the collapse of its core, reaches the stellar surface. As the shock-heated star …

A large fraction of red-supergiant stars seem to be enshrouded by circumstellar material
(CSM) at the time of explosion. Relative to explosions in a vacuum, this CSM causes both a …

We present five far-and near-ultraviolet spectra of the Type II plateau supernova, SN
2022acko, obtained 5, 6, 7, 19, and 21 days after explosion, all observed with the Hubble …

We present photometric and spectroscopic data of SN 2018lab, a low-luminosity Type IIP
supernova (LLSN) with a V-band peak luminosity of− 15.1±0.1 mag. SN 2018lab was …

We present high-cadence photometric and spectroscopic observations of SN 2023axu, a
classical Type II supernova with an absolute V-band peak magnitude of–17.2±0.1 mag. SN …

Aims. Recent observations of core-collapse supernovae (SNe) suggest aspherical
explosions. Globally, aspherical structures in SN explosions are thought to encode …