Search Results - "Setton, David"
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Two Remarkably Luminous Galaxy Candidates at z ≈ 10–12 Revealed by JWST
Published in Astrophysical journal. Letters (01-11-2022)“…The first few 100 Myr at z > 10 mark the last major uncharted epoch in the history of the universe, where only a single galaxy (GN-z11 at z ≈ 11) is currently…”
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UNCOVER: A NIRSpec Identification of a Broad-line AGN at z = 8.50
Published in Astrophysical journal. Letters (01-11-2023)“…Deep observations with the James Webb Space Telescope (JWST) have revealed an emerging population of red pointlike sources that could provide a link between…”
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Recovering the Star Formation Histories of Recently Quenched Galaxies: The Impact of Model and Prior Choices
Published in The Astrophysical journal (01-08-2022)“…Accurate models of the star formation histories (SFHs) of recently quenched galaxies can provide constraints on when and how galaxies shut down their star…”
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UNCOVER: The Growth of the First Massive Black Holes from JWST/NIRSpec—Spectroscopic Redshift Confirmation of an X-Ray Luminous AGN at z = 10.1
Published in Astrophysical journal. Letters (01-09-2023)“…The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from “seeds” to supermassive BHs. Recently, Bogdan et al. reported…”
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Now You See It, Now You Don’t: Star Formation Truncation Precedes the Loss of Molecular Gas by ∼100 Myr in Massive Poststarburst Galaxies at z ∼ 0.6
Published in The Astrophysical journal (01-02-2022)“…We use ALMA observations of CO(2–1) in 13 massive ( M * ≳ 10 11 M ⊙ ) poststarburst galaxies at z ∼ 0.6 to constrain the molecular gas content in galaxies…”
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The Large Magellanic Cloud’s ∼30 kpc Bow Shock and Its Impact on the Circumgalactic Medium
Published in Astrophysical journal. Letters (01-12-2023)“…The interaction between the supersonic motion of the Large Magellanic Cloud (LMC) and the circumgalactic medium (CGM) is expected to result in a bow shock that…”
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JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST
Published in Astrophysical journal. Letters (01-05-2023)“…With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies…”
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Star Formation Suppression by Tidal Removal of Cold Molecular Gas from an Intermediate-redshift Massive Post-starburst Galaxy
Published in Astrophysical journal. Letters (01-09-2022)“…Observations and simulations have demonstrated that star formation in galaxies must be actively suppressed to prevent the formation of overly massive galaxies…”
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Merger Signatures are Common, but not Universal, in Massive, Recently Quenched Galaxies at z ∼ 0.7
Published in The Astrophysical journal (01-05-2023)“…We present visual classifications of merger-induced tidal disturbances in 143 M * ∼ 10 11 M ⊙ post-starburst galaxies at z ∼ 0.7 identified in the SQuIGG L ⃗ E…”
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UNCOVER: Illuminating the Early Universe—JWST/NIRSpec Confirmation of z > 12 Galaxies
Published in Astrophysical journal. Letters (01-11-2023)“…Observations of high-redshift galaxies provide a critical direct test to the theories of early galaxy formation, yet to date, only three have been…”
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Rest-frame Near-infrared Sizes of Galaxies at Cosmic Noon: Objects in JWST's Mirror Are Smaller than They Appeared
Published in Astrophysical journal. Letters (01-10-2022)“…Galaxy sizes and their evolution over cosmic time have been studied for decades and serve as key tests of galaxy formation models. However, at z ≳ 1 these…”
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Most of the photons that reionized the Universe came from dwarf galaxies
Published in Nature (London) (29-02-2024)“…The identification of sources driving cosmic reionization, a major phase transition from neutral hydrogen to ionized plasma around 600–800 Myr after the Big…”
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DESI Massive Poststarburst Galaxies at z ∼ 1.2 Have Compact Structures and Dense Cores
Published in The Astrophysical journal (01-11-2024)“…Poststarburst galaxies (PSBs) are young quiescent galaxies that have recently experienced a rapid decrease in star formation, allowing us to probe the…”
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A high black-hole-to-host mass ratio in a lensed AGN in the early Universe
Published in Nature (London) (04-04-2024)“…Early JWST observations have uncovered a population of red sources that might represent a previously overlooked phase of supermassive black hole growth 1 – 3 …”
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RUBIES: Evolved Stellar Populations with Extended Formation Histories at z ∼ 7–8 in Candidate Massive Galaxies Identified with JWST/NIRSpec
Published in Astrophysical journal. Letters (01-07-2024)“…The identification of red, apparently massive galaxies at z > 7 in early James Webb Space Telescope (JWST) photometry suggests a strongly accelerated time line…”
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Two Distinct Classes of Quiescent Galaxies at Cosmic Noon Revealed by JWST PRIMER and UNCOVER
Published in Astrophysical journal. Letters (01-06-2024)“…We present a measurement of the low-mass quiescent size–mass relation at cosmic noon (1 < z < 3) from the JWST PRIMER and UNCOVER treasury surveys, which…”
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DESI Survey Validation Spectra Reveal an Increasing Fraction of Recently Quenched Galaxies at z ∼ 1
Published in Astrophysical journal. Letters (01-04-2023)“…We utilize ∼17,000 bright luminous red galaxies (LRGs) from the novel Dark Energy Spectroscopic Instrument Survey Validation spectroscopic sample, leveraging…”
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SQuIGG E Survey: Massive z ∼ 0.6 Post-starburst Galaxies Exhibit Flat Age Gradients
Published in The Astrophysical journal (01-12-2020)“…We present Gemini Multi-Object Spectrograph (GMOS) integral field unit (IFU) observations of six massive ( M ⋆ ≥ 10 11 M ⊙ ) A-star dominated post-starburst…”
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The Compact Structures of Massive z ∼ 0.7 Post-starburst Galaxies in the SQuIGGL⃗E Sample
Published in The Astrophysical journal (01-05-2022)“…We present structural measurements of 145 spectroscopically selected intermediate-redshift ( z ∼ 0.7), massive ( M ⋆ ∼ 10 11 M ⊙ ) post-starburst galaxies from…”
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The UNCOVER Survey: A First-look HST + JWST Catalog of 60,000 Galaxies near A2744 and beyond
Published in The Astrophysical journal. Supplement series (01-01-2024)“…In 2022 November, the James Webb Space Telescope (JWST) returned deep near-infrared images of A2744—a powerful lensing cluster capable of magnifying distant,…”
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