The late-time spectra of the kilonova AT 2017gfo associated with GW170817 exhibit a strong
emission line feature at. The line structure develops with time and there is no blueshifted …

Nebular-phase observations of peculiar Type Ia supernovae (SNe Ia) provide important
constraints on progenitor scenarios and explosion dynamics for both these rare SNe and the …

Context. Recent JWST observations of the Type Ia supernova (SN Ia) 2021aefx in the
nebular phase have paved the way for late-time studies covering the full optical to mid …

Abstract We present the Keck Infrared Transient Survey, a NASA Key Strategic Mission
Support program to obtain near-infrared (NIR) spectra of astrophysical transients of all types …

We present a JWST mid-infrared (MIR) spectrum of the underluminous Type Ia Supernova
(SN Ia) 2022xkq, obtained with the medium-resolution spectrometer on the Mid-Infrared …

SN 2021aefx is a normal Type Ia supernova (SN) showing excess emission and redward
color evolution over the first∼ 2 days. We present analyses of this SN using our high …

We present an analysis of ground-based and JWST observations of SN 2022pul, a peculiar"
03fg-like"(or" super-Chandrasekhar") Type Ia supernova (SN Ia), in the nebular phase at …

We present an eigenfunction method to analyze 161 visual light curves (LCs) of Type Ia
supernovae (SNe Ia) obtained by the Carnegie Supernova Project to characterize their …

ABSTRACT Type Ia supernovae (SNe Ia) are important cosmological probes and
contributors to galactic nucleosynthesis, particularly of the iron group elements. To improve …

We present nebular spectroscopy of SN 2020hvf, a Type Ia supernova (SN Ia) with an early
bump in its light curve. SN 2020hvf shares many spectroscopic and photometric similarities …