Little Red Dots as Obscured Little Blue Dots: A Super-Eddington Unification Model

arXiv:2602.22386 · astro-ph.GA, astro-ph.HE · Submitted 2026-02-25 · Read on arXiv

astro-ph.GA, astro-ph.HE

Submitted: 2026-02-25

Updated: 2026-09-01

Comments: 16 pages, 9 figures, version accepted for publication in A&A

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

Terminology

• AGN — 38× in this paper · explained in 1 episode
• Dust Attenuation — 6× in this paper · explained in 2 episodes
• Little Red Dots — 5× in this paper · explained in 2 episodes
• Metallicity — 4× in this paper · explained in 3 episodes
• Anisotropy — 3× in this paper · explained in 3 episodes
• Archetype — 2× in this paper · explained in 1 episode
• James Webb Space Telescope — 2× in this paper
• Little Red Dots (LRDs) — 2× in this paper · explained in 3 episodes
• Absorption Cross Section — 1× in this paper · explained in 1 episode
• Abundance — 1× in this paper · explained in 1 episode
• Accretion Physics — 1× in this paper · explained in 2 episodes
• Anti-correlation — 1× in this paper · explained in 3 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Microlensing — 1× in this paper · explained in 2 episodes
• Spectral Signature — 1× in this paper · explained in 2 episodes

Sources

• Connecting the Dots: UV-Bright Companions of Little Red Dots as Lyman-Werner Sources Enabling Direct Collapse Black Hole Formation
• From "The Cliff" to "Virgil": Mapping the Spectral Diversity of Little Red Dots with JWST/NIRSpec
• Do little red dots really form a distinct class of astronomical objects?
• The Little Blue and Red Dots Rosetta Stones: Non-Gaussian broad lines, hot dust, and X-ray weakness
• Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy
• Active galactic nuclei-heated dust revealed in "little red dots"
• BlackTHUNDER strikes twice: rest-frame Balmer-line absorption and high Eddington accretion rate in a Little Red Dot at $z=7.04$
• Irony at z=6.68: a bright AGN with forbidden Fe emission and multi-component Balmer absorption
• Abundant hydrocarbons in a buried galactic nucleus with signs of carbonaceous grain and polycyclic aromatic hydrocarbon processing
• Little Red and Blue Dots: AGN-excited narrow lines, Lyman- alpha emission, and resemblance to standard quasars
• Lord of LRDs: Insights into a "Little Red Dot" with a low-ionization spectrum at z = 0.1
• A direct black hole mass measurement in a Little Red Dot at the Epoch of Reionization
• An unambiguous AGN and a Balmer break in an Ultraluminous Little Red Dot at z=4.47 from Ultradeep UNCOVER and All the Little Things Spectroscopy
• The case for super-Eddington accretion in JWST broad-line AGN during the first billion years
• Little red dots as obscured little blue dots: relative abundances, luminosities, and black-hole masses
• Wings of little dots: Exponential broad lines from a stratified BLR
• A Nitrogen-rich AGN Powering a Large Ionizing Bubble at z=8.63
• A "Black Hole Star" Reveals the Remarkable Gas-Enshrouded Hearts of the Little Red Dots
• Evidence of violation of Case B recombination in Little Red Dots
• Little Red and Blue Dots: simply stratified Broad Line Regions

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