SQuIGG E: Spatially resolved NIRSpec Pa alpha reveals that the most CO-luminous, z about0.7 post-starburst galaxies exhibit falling---but still active---star formation behind optically thick dust

arXiv:2609.31307 · astro-ph.GA · Submitted 2026-09-25 · Read on arXiv

astro-ph.GA

Submitted: 2026-09-25

Updated: 2026-09-25

Terminology

• AGN — 12× in this paper · explained in 1 episode
• Aperture — 12× in this paper · explained in 1 episode
• Dust Attenuation — 12× in this paper · explained in 2 episodes
• Calibration — 10× in this paper · explained in 7 episodes
• Aperture Correction — 5× in this paper · explained in 1 episode
• Degeneracy — 5× in this paper · explained in 3 episodes
• Core — 4× in this paper · explained in 2 episodes
• Trace — 2× in this paper · explained in 2 episodes
• Velocity Dispersion — 2× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Cooperation — 1× in this paper · explained in 2 episodes
• Galaxy Quenching — 1× in this paper · explained in 3 episodes
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• A$^3$COSMOS: The dust content of massive quiescent galaxies and its evolution with cosmic time
• Calibrating Photometric Mid-Infrared Star Formation Rates for JWST
• The Nature of Post-Starburst Galaxies: Real Deal or Masquerading Impostors?
• Quenching Through Tidal Gas Removal: Molecular Gas and Star Formation in Tidal Tails of z ~ 0.7 Post-Starburst Galaxies
• Molecular Gas Excitation in z ~ 0.7 Gas-Rich Post-starburst Galaxies from SQuIGGLE
• The Prime Focus Spectrograph Galaxy Evolution Survey
• LEGGOS I: The JWST LEGGOS Survey -- LEnsing and Galaxy Growth: Observing Substructures -- Unpacks the Nature of Clumpy Star Formation and Quenching in Gravitationally Lensed Galaxies beyond Cosmic Noon
• Excavating The Ruins: an Ancient $z=2.675$ Galaxy Which Formed in the First 500 Myr
• SQuIGG$\vec{L}$E: Buried star formation cannot explain the rapidly fading CO(2-1) luminosity in massive, $z\sim0.7$ post-starburst galaxies
• Unusually High Gas-to-Dust Ratios Observed in High-Redshift Quiescent Galaxies
• Cold gas in a post-starburst pair at z ~ 1.4: major mergers as a pathway to quenching in the HeavyMetal survey
• Gas outflows in two recently quenched galaxies at z = 4 and 7
• Star Formation and Nebular Attenuation from Pa alpha, Br alpha, and Br beta in Massive Dust-obscured Galaxies at Cosmic Noon using JWST
• FRESCO: Constraining Dust Attenuation and Star-Formation Rates of $z\sim 2$ Star-Forming Galaxies with JWST Paschen and Ground-Based Balmer Emission Line Observations
• RUBIES spectroscopically confirms the high number density of quiescent galaxies from $\mathbf{2<z<5}$
• Winding Back the Clock: Recent Star Formation Histories of Massive Quiescent Galaxies Are Consistent With Their Rapid Number Density Evolution Since $\mathbf{z\sim7}$

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