A kilonova following a long-duration gamma-ray burst at 350 Mpc

JC Rastinejad, BP Gompertz, AJ Levan, W Fong… - Nature, 2022 - nature.com
Gamma-ray bursts (GRBs) are divided into two populations,; long GRBs that derive from the
core collapse of massive stars (for example, ref.) and short GRBs that form in the merger of …

Short GRB host galaxies. I. Photometric and spectroscopic catalogs, host associations, and galactocentric offsets

W Fong, AE Nugent, Y Dong, E Berger… - The Astrophysical …, 2022 - iopscience.iop.org
We present a comprehensive optical and near-infrared census of the fields of 90 short
gamma-ray bursts (GRBs) discovered in 2005–2021, constituting all short GRBs for which …

SN 2023ixf in Messier 101: a variable red supergiant as the progenitor candidate to a type II supernova

CD Kilpatrick, RJ Foley… - The Astrophysical …, 2023 - iopscience.iop.org
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 …

Short GRB host galaxies. II. A legacy sample of redshifts, stellar population properties, and implications for their neutron star merger origins

AE Nugent, WF Fong, Y Dong, J Leja… - The Astrophysical …, 2022 - iopscience.iop.org
We present the stellar population properties of 69 short gamma-ray burst (GRB) host
galaxies, representing the largest uniformly modeled sample to date. Using the Prospector …

Type II-P supernova progenitor star initial masses and SN 2020jfo: direct detection, light-curve properties, nebular spectroscopy, and local environment

CD Kilpatrick, L Izzo, RO Bentley… - Monthly Notices of …, 2023 - academic.oup.com
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 …

Modelling the host galaxies of binary compact object mergers with observational scaling relations

F Santoliquido, M Mapelli, MC Artale… - Monthly Notices of the …, 2022 - academic.oup.com
The merger rate density evolution of binary compact objects and the properties of their host
galaxies carry crucial information to understand the sources of gravitational waves. Here, we …

A Population of Short-duration Gamma-ray Bursts with Dwarf Host Galaxies

AE Nugent, W Fong, C Castrejon, J Leja… - The Astrophysical …, 2024 - iopscience.iop.org
We present a population of 11 of the faintest (> 25.5 AB mag) short gamma-ray burst (GRB)
host galaxies. We model their sparse available observations using the stellar population …

Designing an Optimal Kilonova Search Using DECam for Gravitational-wave Events

CR Bom, J Annis, A Garcia, A Palmese… - The Astrophysical …, 2024 - iopscience.iop.org
We address the problem of optimally identifying all kilonovae detected via gravitational-
wave emission in the upcoming LIGO/Virgo/KAGRA observing run, O4, which is expected to …

Binary neutron star merger offsets from their host galaxies-GW 170817 as a case study

N Gaspari, HF Stevance, AJ Levan, AA Chrimes… - Astronomy & …, 2024 - aanda.org
Aims. The locations of binary neutron star (BNS) mergers within their host galaxies encode
the systemic kicks that these systems received in the supernova aftermath. We investigate …

Late-time Hubble Space Telescope Observations of AT 2018cow. I. Further Constraints on the Fading Prompt Emission and Thermal Properties 50–60 days Post …

Y Chen, MR Drout, AL Piro, CD Kilpatrick… - The Astrophysical …, 2023 - iopscience.iop.org
The exact nature of the luminous fast blue optical transient AT 2018cow is still debated. In
this first of a two-paper series, we present a detailed analysis of three Hubble Space …