activity
20172026
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 · 240 across the 27 of their papers we have counts for

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Showing 2025Show all

15 papers · 1 filter

astro-ph.GA2025

HST Confirms Sub-5 kpc Dual Quasar Pairs at Cosmic Noon

Qian Wang, Xuheng Ding, John Silverman +12

During cosmic noon (), when both star formation and black hole growth peaked, galaxy mergers are predicted to trigger dual active galactic nuclei (AGN) that eventually co…

astro-ph.GA2025

Where Galaxies Go to Die: The Environments of Massive Quiescent Galaxies at

Ian McConachie, Anna de Graaff, Michael V. Maseda +25

At low redshift, massive quiescent galaxies (MQGs) are most frequently found in massive, rich galaxy clusters, but at high redshift the trend is less clear. Here, we present spectr…

astro-ph.GA2025

Cross-correlation of Luminous Red Galaxies with ML-selected AGN in HSC-SSP III: HOD Parameters for Type I and Type II Quasars

Rodrigo Córdova Rosado, Andy D. Goulding, Jenny E. Greene +4

Understanding the dark matter (DM) halo environment in which galaxies that host active galactic nuclei (AGN) reside is a window into the nature of supermassive black hole (SMBH) ac…

astro-ph.GA2025

A Compact Symmetric Object Discovered by the VLA Low-band Ionosphere and Transient Experiment

Kristina Nyland, Mary Rachelle Barrett, Genna Crom +11

We present new Very Long Baseline Array (VLBA) imaging of a MHz-peaked spectrum (MPS) source that was found using commensal low-frequency data taken with the Karl G. Jansky Very La…

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

SQuIGGE: Buried star formation cannot explain the rapidly fading CO(2-1) luminosity in massive, post-starburst galaxies

David J. Setton, Justin S. Spilker, Rachel Bezanson +12

Observational and theoretical studies have long held that rapid gas consumption in starbursts is responsible for the formation of quiescent galaxies. However, studies of recently q…

astro-ph.GA2025

Quenching Through Tidal Gas Removal: Molecular Gas and Star Formation in Tidal Tails of z ~ 0.7 Post-Starburst Galaxies

Vincenzo R. D'Onofrio, Justin S. Spilker, Rachel Bezanson +10

The active suppression of star formation in galaxies is critical in preventing the growth of overly massive systems and explaining the formation of present-day elliptical galaxies.…

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 connection between galaxy mergers, star formation and AGN activity in the HSC-SSP

Kiyoaki Christopher Omori, Connor Bottrell, Sabine Bellstedt +6

Internal gas inflows driven by galaxy mergers are considered to enhance star formation rates (SFR), fuel supermassive black hole growth and stimulate active galactic nuclei (AGN).…

astro-ph.GA2025★ 2 cited

Counting Little Red Dots at with Ground-based Surveys and Spectroscopic Follow-up

Yilun Ma, Jenny E. Greene, David J. Setton +13

Little red dots (LRDs) are a population of red, compact objects discovered by JWST at . At , they are roughly 100 times more abundant than UV-selected quasars. However,…

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…

astro-ph.GA2025★ 2 cited

The Optical and Infrared Are Connected

Christian K. Jespersen, Peter Melchior, David N. Spergel +3

Galaxies are often modelled as composites of separable components with distinct spectral signatures, implying that different wavelength ranges are only weakly correlated. They are…