{
  "abstract": "Ly α emitters (LAEs) are star-forming galaxies with significant Ly α emission and are often used as tracers of large-scale structure at high redshift. We explore the relationship between the Ly α line profile and environmental density with spectroscopy from the Dark Energy Spectroscopic Instrument (DESI) of LAEs selected with narrowband photometry through the One-hundred-deg ² DECam Imaging in Narrowbands (ODIN) survey. We use LAE surface density maps in the N419 ( z ∼ 2.45) and N501 ( z ∼ 3.12) narrow bands to probe the relationship between local environmental density and the Ly α line profile. In both narrow bands, we stack the LAE spectra in bins of environmental density and inside and outside of protocluster regions. The N501 data show ∼15% higher Ly α line luminosity for galaxies in protoclusters, suggesting increased star formation in these regions. However, the line luminosity is not appreciably greater in protocluster galaxies in the N419 band, suggesting a potential redshift evolution of this effect. The shape of the line profile itself does not vary with environmental density, suggesting that line shape changes are caused by local effects independent of a galaxy’s environment. These data indicate a potential relationship between LAE local environmental density, ionized gas distribution, and Ly α line luminosity.",
  "abstract_shown": true,
  "affiliations": [
    "Center for Astrophysics ∣Harvard & Smithsonian",
    "NSF NOIRLab",
    "Lawrence Berkeley National Laboratory",
    "Harvard University",
    "Purdue University",
    "the State University of New Jersey",
    "Boston University",
    "Università degli Studi di Milano",
    "INAF-Osservatorio Astronomico di Brera",
    "University College London",
    "Universidad Nacional Autónoma de México",
    "University of California",
    "Institut de Física d’Altes Energies (IFAE)",
    "Universidad de los Andes",
    "Institut d’Estudis Espacials de Catalunya (IEEC)",
    "Institute of Cosmology and Gravitation",
    "Institute of Space Sciences",
    "Universidad Andres Bello",
    "Millennium Nucleus for Galaxies (MINGAL)",
    "Fermi National Accelerator Laboratory",
    "Institut d’Astrophysique de Paris",
    "Université Paris-Saclay",
    "The Ohio State University",
    "Seoul National University",
    "The University of Texas at Dallas",
    "Sorbonne Université",
    "Universitat Autònoma de Barcelona",
    "Institució Catalana de Recerca i Estudis Avançats",
    "Department of Physics and Astronomy",
    "University of Waterloo",
    "Perimeter Institute for Theoretical Physics",
    "Instituto de Astrofísica de Andalucía (CSIC)",
    "Universitat Politècnica de Catalunya",
    "Sejong University",
    "CIEMAT",
    "University of Michigan",
    "Ohio University",
    "Department of Astronomy and Space Science and Institute for Sciences of the Universe",
    "Chinese Academy of Sciences"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 55,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Ana Sofía M. Uzsoy",
      "orcid": "0000-0001-9308-0449"
    },
    {
      "affs": [
        1
      ],
      "name": "Arjun Dey",
      "orcid": "0000-0002-4928-4003"
    },
    {
      "affs": [
        2
      ],
      "name": "Anand Raichoor",
      "orcid": "0000-0001-5999-7923"
    },
    {
      "affs": [
        0,
        3
      ],
      "name": "Douglas P. Finkbeiner",
      "orcid": "0000-0003-2808-275X"
    },
    {
      "affs": [
        4
      ],
      "name": "Vandana Ramakrishnan",
      "orcid": "0000-0002-9176-7252"
    },
    {
      "affs": [
        4
      ],
      "name": "Kyoung-Soo Lee",
      "orcid": "0000-0003-3004-9596"
    },
    {
      "affs": [
        5
      ],
      "name": "Eric Gawiser",
      "orcid": "0000-0003-1530-8713"
    },
    {
      "affs": [
        2
      ],
      "name": "Jessica Nicole Aguilar",
      "orcid": "0000-0003-0822-452X"
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    {
      "affs": [
        6
      ],
      "name": "Steven Ahlen",
      "orcid": "0000-0001-6098-7247"
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    {
      "affs": [
        2
      ],
      "name": "Abhijeet Anand",
      "orcid": "0000-0003-2923-1585"
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        7,
        8
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      "name": "Davide Bianchi",
      "orcid": "0000-0001-9712-0006"
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    {
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        9
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      "name": "David Brooks",
      "orcid": "0000-0002-8458-5047"
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        2
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      "name": "Todd Claybaugh"
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        10
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      "name": "Axel de la Macorra",
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      "name": "Peter Doel",
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      "name": "Simone Ferraro",
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      "name": "Nicole M. Firestone",
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      "name": "Andreu Font-Ribera",
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        13
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      "name": "Jaime E. Forero-Romero",
      "orcid": "0000-0002-2890-3725"
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        15,
        16
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      "name": "Enrique Gaztañaga",
      "orcid": "0000-0001-9632-0815"
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        18
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      "name": "Lucia Guaita",
      "orcid": "0000-0002-4902-0075"
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      "name": "Gaston Gutierrez",
      "orcid": "0000-0003-0825-0517"
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      "name": "Hiram K. Herrera-Alcantar",
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        22
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      "name": "Klaus Honscheid",
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        23
      ],
      "name": "Ho Seong Hwang"
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        24
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      "name": "Mustapha Ishak",
      "orcid": "0000-0002-6024-466X"
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        1
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      "name": "Dick Joyce",
      "orcid": "0000-0003-0201-5241"
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      "name": "David Kirkby",
      "orcid": "0000-0002-8828-5463"
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    {
      "affs": [
        2
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      "name": "Theodore Kisner",
      "orcid": "0000-0003-3510-7134"
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    {
      "affs": [
        2
      ],
      "name": "Anthony Kremin",
      "orcid": "0000-0001-6356-7424"
    },
    {
      "affs": [
        9
      ],
      "name": "Ofer Lahav"
    },
    {
      "affs": [
        22
      ],
      "name": "Claire Lamman",
      "orcid": "0000-0002-6731-9329"
    },
    {
      "affs": [
        2
      ],
      "name": "Martin Landriau",
      "orcid": "0000-0003-1838-8528"
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    {
      "affs": [
        25
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      "name": "Laurent Le Guillou",
      "orcid": "0000-0001-7178-8868"
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    {
      "affs": [
        12,
        26
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      "name": "Marc Manera",
      "orcid": "0000-0003-4962-8934"
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    {
      "affs": [
        12,
        27
      ],
      "name": "Ramon Miquel",
      "orcid": "0000-0002-6610-4836"
    },
    {
      "affs": [
        28
      ],
      "name": "John Moustakas",
      "orcid": "0000-0002-2733-4559"
    },
    {
      "affs": [
        10
      ],
      "name": "Andrea Muñoz-Gutiérrez"
    },
    {
      "affs": [
        15
      ],
      "name": "Seshadri Nadathur",
      "orcid": "0000-0001-9070-3102"
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    {
      "affs": [
        2,
        21
      ],
      "name": "Nathalie Palanque-Delabrouille",
      "orcid": "0000-0003-3188-784X"
    },
    {
      "affs": [
        29,
        30
      ],
      "name": "Will Percival",
      "orcid": "0000-0002-0644-5727"
    },
    {
      "affs": [
        2,
        11
      ],
      "name": "Claire Poppett",
      "orcid": "0000-0003-0512-5489"
    },
    {
      "affs": [
        31
      ],
      "name": "Francisco Prada",
      "orcid": "0000-0001-7145-8674"
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    {
      "affs": [
        32
      ],
      "name": "Ignasi Pérez-Ràfols",
      "orcid": "0000-0001-6979-0125"
    },
    {
      "affs": [
        33
      ],
      "name": "Graziano Rossi"
    },
    {
      "affs": [
        34
      ],
      "name": "Eusebio Sanchez",
      "orcid": "0000-0002-9646-8198"
    },
    {
      "affs": [
        2
      ],
      "name": "David Schlegel",
      "orcid": "0000-0002-5042-5088"
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    {
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        35
      ],
      "name": "Michael Schubnell"
    },
    {
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        36
      ],
      "name": "Hee-Jong Seo",
      "orcid": "0000-0002-6588-3508"
    },
    {
      "affs": [
        2
      ],
      "name": "Joseph Harry Silber",
      "orcid": "0000-0002-3461-0320"
    },
    {
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        37
      ],
      "name": "Hyunmi Song",
      "orcid": "0000-0002-4362-4070"
    },
    {
      "affs": [
        1
      ],
      "name": "David Sprayberry",
      "orcid": "0000-0001-7583-6441"
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    {
      "affs": [
        35
      ],
      "name": "Gregory Tarlé",
      "orcid": "0000-0003-1704-0781"
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    {
      "affs": [
        1
      ],
      "name": "Benjamin Alan Weaver"
    },
    {
      "affs": [
        38
      ],
      "name": "Hu Zou",
      "orcid": "0000-0002-6684-3997"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7a8ce49myg1v3.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea6d8",
  "fulltext_url": null,
  "id": "7a8ce49myg1v3",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea6d8",
  "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": [
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
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  "openalex": "W7221110532",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea6d8/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/7a8ce49myg1v3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea6d8",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea6d8"
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Galaxies: Formation, Evolution, Phenomena",
      "subfield": "galaxies"
    }
  ],
  "title": "Effect of Local Environment on Ly α Line Profile in DESI/ODIN LAEs",
  "title_text": "Effect of Local Environment on Ly α Line Profile in DESI/ODIN LAEs",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/7a8ce49myg1v3",
  "venue": "The Astrophysical Journal",
  "versions": []
}