{
  "abstract": "We present spatially resolved rest-optical spectroscopy of 38 star-forming galaxies at 0.5 < z < 1.5 from the JWST/NIRSpec Micro-Shutter Assembly (MSA)-3D survey, which employs a slit-stepping strategy to build integral field unit–like data cubes with a spatial sampling of ∼0 . ″ 1. We map emission-line morphology, excitation, and kinematics of the warm-ionized gas using [N II ]/H α , [S II ]/H α , and [O III ]/H β . Relative to z ∼ 0 galaxies at fixed stellar mass, our sources show systematically lower [N II ]/H α and [S II ]/H α and elevated [O III ]/H β , consistent with harder radiation fields and lower metallicities. Radially, [O III ]/H β profiles are typically flat or mildly positive, whereas [N II ]/H α also remains flat or declines outward, mirroring metallicity trends. On kiloparsec scales, we find a strong positive correlation between [N II ]/H α and velocity dispersion ( σ ), linking local excitation to turbulent or shock-driven kinematics. Six galaxies (∼16% of the sample) host spatially localized regions with elevated [N II ]/H α , high EW(H α ), and V rms ≡ V 2 + σ 2 > 250 km s − 1 , indicative of weak active galactic nucleus (AGN) activity, shocks, or outflows. For these candidates, we infer modest warm-ionized outflow rates of 1−4 M ⊙ yr ⁻¹ and kinetic powers ∼0.1%−1% of the AGN bolometric luminosity (from central [O III ] or H α ). These values place our sample at the low-energy tail of known AGN-driven outflows yet in continuity with M ̇ out – L AGN scaling relations across 0 < z < 6. A completeness assessment shows MSA-3D is sensitive to AGN with L AGN ≳ 10 ⁴³ erg s ⁻¹ , underscoring both the promise and current limitations of detecting weak AGN activity in distant galaxies with resolved spectroscopy.",
  "abstract_shown": true,
  "affiliations": [
    "Arizona State University",
    "Raman Research Institute",
    "Space Telescope Science Institute",
    "University of California",
    "University of Kentucky",
    "Swinburne University of Technology",
    "The Johns Hopkins University",
    "Max-Planck-Institut für extraterrestische Physik (MPE)",
    "University of Chinese Academy of Sciences",
    "Chinese Academy of Sciences",
    "Beijing Normal University",
    "University of Western Australia",
    "Australian Research Council"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Namrata Roy",
      "orcid": "0000-0002-4430-8846"
    },
    {
      "affs": [
        2
      ],
      "name": "Alaina Henry",
      "orcid": "0000-0002-6586-4446"
    },
    {
      "affs": [
        3
      ],
      "name": "Tucker Jones",
      "orcid": "0000-0001-5860-3419"
    },
    {
      "affs": [
        3
      ],
      "name": "Ivana Barišić",
      "orcid": "0000-0001-6371-6274"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Ryan L. Sanders",
      "orcid": "0000-0003-4792-9119"
    },
    {
      "affs": [
        3
      ],
      "name": "Kevin Bundy",
      "orcid": "0000-0001-9742-3138"
    },
    {
      "affs": [
        3
      ],
      "name": "Matthew A. Malkan",
      "orcid": "0000-0001-6919-1237"
    },
    {
      "affs": [
        5
      ],
      "name": "Themiya Nanayakkara",
      "orcid": "0000-0003-2804-0648"
    },
    {
      "affs": [
        5
      ],
      "name": "Karl Glazebrook",
      "orcid": "0000-0002-3254-9044"
    },
    {
      "affs": [
        6,
        0
      ],
      "name": "Timothy Heckman",
      "orcid": "0000-0001-6670-6370"
    },
    {
      "affs": [
        7
      ],
      "name": "Juan M. Espejo Salcedo",
      "orcid": "0000-0001-6703-4676"
    },
    {
      "affs": [
        8,
        9,
        10
      ],
      "name": "Xin Wang",
      "orcid": "0000-0002-9373-3865"
    },
    {
      "affs": [
        11,
        12
      ],
      "name": "Danail Obreschkow",
      "orcid": "0000-0002-1527-0762"
    },
    {
      "affs": [
        3
      ],
      "name": "Tommaso Treu",
      "orcid": "0000-0002-8460-0390"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cf1qd44bs7w1j.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea61d",
  "fulltext_url": null,
  "id": "cf1qd44bs7w1j",
  "issns": [
    "1538-4357",
    "0004-637X"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea61d",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "astronomy/general"
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  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea61d/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/cf1qd44bs7w1j.ris",
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "MSA-3D: Uncovering Weak Active Galactic Nuclei and Resolved Outflows in Disguise in z ∼ 1 Star-forming Galaxies",
  "title_text": "MSA-3D: Uncovering Weak Active Galactic Nuclei and Resolved Outflows in Disguise in z ∼ 1 Star-forming Galaxies",
  "type": "peer-reviewed",
  "updated_at": "2026-10-31T00:20:43Z",
  "url": "https://research.draconitic.com/paper/cf1qd44bs7w1j",
  "venue": "The Astrophysical Journal",
  "versions": []
}