Core-collapse supernovae (CCSNe) mark the deaths of stars more massive than about eight
times the mass of the Sun and are intrinsically the most common kind of catastrophic cosmic …

We present the discovery of the Type II supernova SN 2023ixf in M101 and follow-up
photometric and spectroscopic observations, respectively, in the first month and week of its …

We analyze pre-explosion near-and mid-infrared (IR) imaging of the site of SN 2023ixf in the
nearby spiral galaxy M101 and characterize the candidate progenitor star. The star displays …

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) …

Abstract We introduce the Automatic Learning for the Rapid Classification of Events
(ALeRCE) broker, an astronomical alert broker designed to provide a rapid and self …

We present the first version of the Automatic Learning for the Rapid Classification of Events
(ALeRCE) broker light curve classifier. ALeRCE is currently processing the Zwicky Transient …

The progenitor of SN 2023ixf was an∼ 104.8 to star (∼ 9 to at birth) obscured by a dusty
wind with a visual optical depth of τ V≃ 13. This is required by the progenitor spectral energy …

We present high-cadence photometric and spectroscopic observations of supernova (SN)
2024ggi, a Type II SN with flash spectroscopy features, which exploded in the nearby galaxy …

We perform a comprehensive search for optical precursor emission at the position of SN
2023ixf using data from the DLT40, ZTF, and ATLAS surveys. By comparing the current data …

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 …