Broad-band host measurements of little red dots and similar compact nuclei require source-conditioned polychromatic PSFs

arXiv:2608.30459 · astro-ph.GA, astro-ph.IM · Submitted 2026-08-31 · Read on arXiv

astro-ph.GA, astro-ph.IM

Submitted: 2026-08-31

Updated: 2026-08-31

Comments: 29 pages, 2 figures, 2 tables. Matters Arising submitted to Nature Astronomy. Source Data at https://doi.org/10.5281/zenodo.22182425

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

Little Red Dots — 9× in this paper · explained in 2 episodes
Robustness — 5× in this paper · explained in 5 episodes
Calibration — 4× in this paper · explained in 7 episodes
Accuracy — 3× in this paper · explained in 1 episode
Consistency — 2× in this paper · explained in 3 episodes
Core — 2× in this paper · explained in 2 episodes
Degeneracy — 2× in this paper · explained in 3 episodes
AGN — 1× in this paper · explained in 1 episode
Aggregation — 1× in this paper · explained in 1 episode
Alignment — 1× in this paper · explained in 1 episode
Gravitational Lensing — 1× in this paper · explained in 2 episodes
Little Red Dots (LRDs) — 1× in this paper · explained in 3 episodes
Regularization — 1× in this paper · explained in 3 episodes

Sources

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