October 9, 2025Open Access

The Discovery of Little Red Dots in the Local Universe: Signatures of Cool Gas Envelopes

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Local little red dots exhibit emission lines consistent with high-redshift AGNs, indicating unique properties.
Spectroscopic analysis detected broad hydrogen, helium, and other absorption lines in these objects at low redshift.
Conceptual model proposes a thermalized cool-gas envelope and high-density outflows surrounding black holes.
Localized observations challenge existing AGN models by showcasing distinct emission properties and gas environments.

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Observations uncover local little red dots, showing AGN features and cool gas envelopes, implying new models.

Lin et al. (2025) studied this question.

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