Little Red Dots from Low-Spin Galaxies at High Redshifts

Abstract

Recently, a new population of compact, high-redshift (z>7) galaxies appeared as little red dots (LRDs) in deep JWST observations. The latest spectroscopic data indicates that these galaxies contain an evolved stellar population, reflecting an early episode of high star-formation-rate. The appearance of broad emission lines suggests that a central overmassive black hole also powers these galaxies. I propose that LRD galaxies represent the low-spin tail of the galaxy population. Low-spin galaxies host a more compact gaseous disk with an enhanced star formation rate relative to typical galaxies at the same redshift. The compact disk feeds efficiently a central black hole, as predicted by Eisenstein & Loeb (1995).

arXiv commentPublished in RNAAS, 4 pages

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Cited by in corpus (3)

• Little Red Dots Are Nurseries of Massive Black Holes
• Cosmic Outliers: Low-Spin Halos Explain the Abundance, Compactness, and Redshift Evolution of the Little Red Dots
• Mass and Spin Growth of Very Massive Stars in Star Clusters Potentially Associated with Little Red Dots