activity
20232026
collaborators

5 papers

astro-ph.HE2026

ATLAS22kjn (AT 2022fpx): A Coronal Line Emitter with an Early Light Curve Bump and Mid-Infrared Dust Echo

Athena C. Engholm, Jason T. Hinkle, Benjamin J. Shappee +14

We present an analysis of ATLAS22kjn (AT 2022fpx), whose high-ionisation coronal lines (CLs) and pre-peak light curve bump provide distinctive opportunities to investigate the phys…

astro-ph.GA2026

Calibrating Mid-Infrared Emission Features As Diagnostics of Star Formation in Infrared-Luminous Galaxies via Radiative Transfer Modeling

L. Robinson, D. Farrah, A. Efstathiou +13

Luminous infrared galaxies are key sites of obscured stellar mass assembly at z > 0.5. Their star formation rates (SFRs) are often estimated using the luminosities of the 6.2 micro…

astro-ph.GA2025

How accurately can obscured galaxy luminosities be measured using spectral energy distribution fitting of near- through far-infrared observations?

Duncan Farrah, Kiana Ejercito, Andreas Efstathiou +23

Infrared-luminous galaxies are important sites of stellar and black hole mass assembly at most redshifts. Their luminosities are often estimated by fitting spectral energy distribu…

astro-ph.GA2025

The assembly of supermassive black holes at in early-type galaxies from scaling relations

Duncan Farrah, Athena Engholm, Evanthia Hatziminaoglou +14

The assembly of supermassive black hole (SMBH) mass () and stellar mass () in galaxies can be studied via the redshift evolution of the rela…

astro-ph.CO2023

Constraints on cosmological coupling from the accretion history of supermassive black holes

Mark Lacy, Athena Engholm, Duncan Farrah +1

Coupling of black hole mass to the cosmic expansion has been suggested as a possible path to understanding the dark energy content of the Universe. We test this hypothesis by compa…