Author

S. Gallagher

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Review Oct 2026

Systematic non-compliance of satellite megaconstellations with IAU brightness limits

Satellite megaconstellations in low Earth orbit interfere with ground-based optical astronomy, but the scale of that interference has been hard to measure. Here we report an uncued photometric survey from a mid-northern latitude site in late 2024 which recorded some 25,000 tracks of 5,118 individual satellites to a lim...

Jack Rayworth, D. Vida, P. Barmby et al. · 0 citations

Open access Sep 2026

Separating the Optical to Near-Infrared Light of AGN and Their Host Galaxies

The properties of galaxies that host active galactic nuclei (AGNs) offer clues to the conditions that enable accretion onto supermassive black holes. A galaxy’s morphology can provide significant information on the evolutionary processes underway. By modeling the surface-brightness profiles of galaxies that host AGN, w...

Callum Dewsnap, P. Barmby, S. Gallagher · Publications of the Astronom... · 0 citations