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20232026
most citedA remarkable Ruby: Absorption in dense gas, rather than evolved stars, drives the extreme Balmer break of a Little Red Dot at

71 citations · 244 across the 49 of their papers we have counts for

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astro-ph.GA2025★ 2 cited

VENUS: When Red meets Blue -- A multiply imaged Little Red Dot with an apparent blue companion behind the galaxy cluster Abell 383

Miriam Golubchik, Lukas J. Furtak, Joseph F. V. Allingham +50

We report the discovery of a doubly-imaged Little Red Dot (LRD) candidate behind the galaxy cluster Abell 383, which we dub A383-LRD1. Initially classified as a dropout galaxy in H…

astro-ph.GA2025★ 2 cited

Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy

Anna de Graaff, Raphael E. Hviding, Rohan P. Naidu +34

We use the DAWN JWST Archive to construct and characterise a sample of 146 little red dots (LRDs) across 2.0<z<9.3, selecting all sources with v-shaped UV-optical continua from NIR…

astro-ph.GA2025

A GLIMPSE of Intermediate Mass Black holes in the epoch of reionization: Witnessing the Descendants of Direct Collapse?

Qinyue Fei, Seiji Fujimoto, Rohan P. Naidu +17

JWST has revealed an abundance of supermassive black holes (BHs) in the early Universe, and yet the lowest mass seed black holes that gave rise to these populations remain elusive.…

astro-ph.GA2025★ 14 cited

The warm outer layer of a Little Red Dot as the source of [Fe II] and collisional Balmer lines with scattering wings

Alberto Torralba, Jorryt Matthee, Gabriele Pezzulli +22

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 key component to expla…

astro-ph.GA2025★ 5 cited

Irony at z=6.68: a bright AGN with forbidden Fe emission and multi-component Balmer absorption

Francesco D'Eugenio, Erica Nelson, Xihan Ji +11

We present the deepest medium-resolution JWST/NIRSpec spectroscopy to date of a bright Little Red Dot (LRD) AGN, Irony at z=6.68. The data reveal broad Balmer emission from H-H$…

astro-ph.GA2025★ 2 cited

Meet the Neighbors: Gas Rich "Buddy Galaxies" are Common Around Recently Quenched Massive Galaxies in the SQuIGGE Survey

Anika Kumar, David J. Setton, Rachel Bezanson +7

In this work, we characterize the environments of massive () post-starburst galaxies (PSBs) by studying serendipitously-detected CO(2-1) e…

astro-ph.GA2025★ 1 cited

What you see is what you get: empirically measured bolometric luminosities of Little Red Dots

Jenny E. Greene, David J. Setton, Lukas J. Furtak +27

New populations of red active galactic nuclei (known as ``Little Red Dots'') discovered by JWST exhibit remarkable spectral energy distributions. Leveraging X-ray through far-infra…

astro-ph.GA2025

Do Little Red Dots Vary?

Amy Secunda, Rachel S. Somerville, Yan-Fei Jiang +3

Little red dots (LRDs), high-redshift, compact, red objects with V-shaped spectra, are one of the most exciting and perplexing discoveries made by the James Webb Space Telescope (J…

astro-ph.GA2025★ 1 cited

No Luminous Little Red Dots: A Sharp Cutoff in Their Luminosity Function

Yilun Ma, Jenny E. Greene, Marta Volonteri +14

One of the most surprising results of early James Webb Space Telescope (JWST) observations is the discovery of an abundance of red, compact, broad-line objects dubbed "little red d…

astro-ph.GA2025

The Missing Hard Photons of Little Red Dots: Their Incident Ionizing Spectra Resemble Massive Stars

Bingjie Wang, Joel Leja, Harley Katz +11

The nature of Little Red Dots (LRDs) has largely been investigated through their continuum emission, with lines assumed to arise from a broad-line region. In this paper, we instead…

astro-ph.GA2025★ 7 cited

RUBIES spectroscopically confirms the high number density of quiescent galaxies from

Yunchong Zhang, Anna de Graaff, David J. Setton +21

We present the number density of massive () quiescent galaxies at using JWST NIRSpec PRISM spectra. This work relies on spectra fr…

astro-ph.GA2025

Unusually High Gas-to-Dust Ratios Observed in High-Redshift Quiescent Galaxies

Justin S. Spilker, Katherine E. Whitaker, Desika Narayanan +15

Tracking the cold molecular gas contents of galaxies is critical to understand the interplay between star formation and galaxy growth across cosmic time. Observations of the long-w…

astro-ph.GA2025★ 4 cited

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

Xiaojing Lin, Xiaohui Fan, Zheng Cai +25

JWST observations have revealed a population of high-redshift "little red dots" (LRDs) that challenge conventional AGN models. We report the discovery of three local LRDs at $z = 0…

astro-ph.GA2025

The Balmer Break and Optical Continuum of Little Red Dots from Super-Eddington Accretion

Hanpu Liu, Yan-Fei Jiang, Eliot Quataert +2

The physical origin of Little Red Dots (LRDs)--compact extragalactic sources with red rest-optical continua and broad Balmer lines--remains elusive. The redness of LRDs is likely i…

astro-ph.GA2025★ 44 cited

RUBIES: A Spectroscopic Census of Little Red Dots; All V-Shaped Point Sources Have Broad Lines

Raphael E. Hviding, Anna de Graaff, Tim B. Miller +16

The physical nature of Little Red Dots (LRDs) - a population of compact, red galaxies revealed by JWST - remains unclear. Photometric samples are constructed from varying selection…

astro-ph.GA2025★ 12 cited

Population Models for Star Formation Timescales in Early Galaxies: The First Step Towards Solving Outshining in Star Formation History Inference

Bingjie Wang, Joel Leja, Hakim Atek +13

JWST have revealed temporarily-quenched and ultraviolet-luminous galaxies in the early universe, suggesting enhanced star formation stochasticity. Verifying this hypothesis is crit…

astro-ph.GA2025

Measuring Emission Lines with JWST-MegaScience Medium-Bands: A New Window into Dust and Star Formation at Cosmic Noon

Brian Lorenz, Katherine A. Suess, Mariska Kriek +23

We demonstrate the power of JWST-NIRCam medium-band photometry to measure emission line fluxes and study dust and star formation properties of galaxies at cosmic noon. In this work…

astro-ph.GA2025★ 9 cited

A Cosmic Miracle: A Remarkably Luminous Galaxy at Confirmed with JWST

Rohan P. Naidu, Pascal A. Oesch, Gabriel Brammer +43

JWST has revealed a stunning population of bright galaxies at surprisingly early epochs, , where few such sources were expected. Here we present the most distant example of t…

astro-ph.GA2025★ 5 cited

A weak Ly halo for an extremely bright Little Red Dot: Indications of enshrouded SMBH growth

Alberto Torralba, Jorryt Matthee, Gabriele Pezzulli +13

The abundant population of "Little Red Dots" (LRDs)-compact objects with red UV to optical colors and broad Balmer lines at high redshift-is unveiling new insights into the propert…

astro-ph.GA2025

The Structure and Formation Histories of Low-Mass Quiescent Galaxies in the Abell 2744 Cluster Environment

Sam E. Cutler, John R. Weaver, Katherine E. Whitaker +21

Low-mass quiescent galaxies are thought to predominantly reside in overdense regions, as environmental effects are often invoked to explain their shutdown of star formation. These…

astro-ph.GA2025

UNCOVER/MegaScience: No Evidence of Environmental Quenching in a z2.6 Proto-cluster

Richard Pan, Katherine A. Suess, Danilo Marchesini +22

Environmental quenching -- where interactions with other galaxies and/or the intra-cluster medium (ICM) suppress star formation in low-mass galaxies -- has been well-established as…

astro-ph.GA2025★ 14 cited

A "Black Hole Star" Reveals the Remarkable Gas-Enshrouded Hearts of the Little Red Dots

Rohan P. Naidu, Jorryt Matthee, Harley Katz +48

The physical processes that led to the formation of billion solar mass black holes within the first 700 million years of cosmic time remain a puzzle. Several theoretical scenarios…

astro-ph.GA2025

A confirmed deficit of hot and cold dust emission in the most luminous Little Red Dots

David J. Setton, Jenny E. Greene, Justin S. Spilker +33

Luminous broad H emission and red rest-optical SEDs are the hallmark of compact Little Red Dots (LRDs), implying highly attenuated dusty starbursts and/or obscured active galact…

astro-ph.GA2025★ 71 cited

A remarkable Ruby: Absorption in dense gas, rather than evolved stars, drives the extreme Balmer break of a Little Red Dot at

Anna de Graaff, Hans-Walter Rix, Rohan P. Naidu +25

The origin of the rest-optical emission of compact, red, high-redshift sources known as `little red dots' (LRDs) poses a major puzzle. If interpreted as starlight, it would imply t…