The warm outer layer of a little red dot as the source of [Fe II] and collisional Balmer lines with scattering wings

The population of the little red dots (LRDs) may represent a key phase of supermassive black hole (SMBH) growth. A cocoon of dense excited gas is emerging as a key component to explain the most striking properties of LRDs, such as strong Balmer breaks and Balmer absorption, as well as the weak IR em...

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Main Authors:	Torralba Alberto, Matthee Jorryt, Pezzulli Gabriele, Naidu Rohan P., Ishikawa Yuzo, Brammer Gabriel B., Chang Seok-Jun, Chisholm John, de Graaff Anna, D’Eugenio Francesco, Di Cesare Claudia, Eilers Anna-Christina, Greene Jenny E., Gronke Max, Iani Edoardo, Kokorev Vasily, Kotiwale Gauri, Kramarenko Ivan, Ma Yilun, Mascia Sara, Navarrete Benjamín, Nelson Erica, Oesch Pascal, Simcoe Robert A., Wuyts Stijn
Format:	Artigo
Language:	Inglês
Published:	EDP Sciences 2026-03-01
Series:	Astronomy & Astrophysics
Subjects:	galaxies: active galaxies: high-redshift galaxies: nuclei quasars: supermassive black holes
Online Access:	https://www.aanda.org/articles/aa/full_html/2026/03/aa57537-25/aa57537-25.html
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