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 preexplosion optical and infrared (IR) imaging at the site of the type II supernova
(SN II) 2023ixf in Messier 101 at 6.9 Mpc. We astrometrically registered a ground-based …

There is significant astronomical interest around the intense mass loss that appears to take
place in some massive stars immediately before core collapse. However, because it occurs …

We identify the progenitor star of SN 2023ixf in Messier 101 using Keck/NIRC2 adaptive
optics imaging and pre-explosion Hubble Space Telescope (HST)/Advanced Camera for …

Core-collapse supernovae are explosions of massive stars at the end of their evolution.
They are responsible for metal production and for halting star formation, having a significant …

We report on analysis using the JWST to identify a candidate progenitor star of the Type II-
plateau (II-P) supernova SN 2022acko in the nearby, barred spiral galaxy NGC 1300. To our …

The direct detection of core-collapse supernova (SN) progenitor stars is a powerful way of
probing the last stages of stellar evolution. However, detections in archival Hubble Space …

We follow our first paper with an analysis of the ensemble of the extensive preexplosion
ground-and space-based infrared observations of the red supergiant (RSG) progenitor …

Context. Open clusters (OCs) provide homogeneous samples of white dwarfs (WDs) with
known distances, extinctions, and total ages. The unprecedented astrometric precision of …

Early JWST observations have revealed the ubiquitous presence in the early Universe, up
to, of extreme baryon concentrations, namely forming globular clusters, extremely dense …