{
  "abstract": "We present a systematic study of the environments of 25 luminous quasars at z > 6.5 from the ASPIRE program. Using JWST/NIRCam wide-field slitless spectroscopy data, we identified 487 galaxies at 5.3 ≲ z ≲ 7.0 exhibiting [O iii ] emission. Among these, 122 [O iii ] emitters lie within ∣Δ v los ∣ < 1000 km s −1 of the quasars, corresponding to a ∼9.4-fold enhancement relative to the average galaxy density at other redshifts. Furthermore, we identified 16 [C ii ]-emitting galaxies at the quasar redshifts from Atacama Large Millimeter/submillimeter Array (ALMA) mosaic observations. A cross-correlation function analysis between quasars and [O iii ]+[C ii ] emitters yields a cross-correlation length of r 0 QG = 8.6 8 − 0.55 + 0.51 h − 1 cMpc and an autocorrelation of r 0 QQ = 15.7 6 − 2.70 + 2.48 h − 1 cMpc , indicating that z ∼ 7 quasars reside in dark matter halos with M halo = 1 0 12.2 7 − 0.26 + 0.21 M ⊙ and have a quasar lifetime of t Q = 1 0 7.05 − 1.01 + 0.95 yr . Notably, the number of [O iii ]-emitting galaxies at quasar redshifts varies significantly from field to field, ranging from 0 to 20, highlighting a diverse quasar environment. Remarkably, seven quasars trace significant galaxy overdensities (i.e., protoclusters), with δ gal > 5 within a volume of V ∼ 500 cMpc 3 . We also find that ∣Δ v los ∣ increases rapidly toward smaller galaxy–quasar separations in protocluster fields, consistent with galaxy kinematics around extremely massive halos in cosmological simulations. By combining JWST and ALMA data, we reveal the complex and diverse environments of these early quasars, providing robust evidence that the earliest luminous quasars are effective tracers of galaxy overdensiti",
  "abstract_shown": true,
  "affiliations": [
    "University of Michigan",
    "Space Telescope Science Institute",
    "University of Arizona",
    "University of California",
    "Leiden University",
    "Huazhong University of Science and Technology",
    "Newcastle University",
    "INAF—Osservatorio di Astrofisica e Scienza dello Spazio",
    "University of Geneva",
    "Center for Astrophysics ∣ Harvard & Smithsonian",
    "Max Planck Institut für Astronomie",
    "Cosmic Dawn Center (DAWN)",
    "University of Copenhagen",
    "Tsinghua University",
    "University of Florida",
    "Heidelberg University",
    "Massachusetts Institute of Technology",
    "Columbia University",
    "Institute of Science and Technology Austria (ISTA)",
    "Korea Institute for Advanced Study",
    "Northwestern College",
    "INFN",
    "Universitá degli Studi dell’Insubria",
    "Universidad Diego Portales",
    "Peking University",
    "The University of Tokyo",
    "University of Hamburg",
    "University of Illinois Urbana-Champaign",
    "The Pennsylvania State University",
    "Excellence Cluster ORIGINS",
    "Max-Planck-Institut für extraterrestrische Physik",
    "Tel Aviv University",
    "LUX",
    "The University of Copenhagen",
    "CNRS and Sorbonne Université",
    "Chinese Academy of Sciences South America Center for Astronomy",
    "Universidad de Chile"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 45,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Feige Wang",
      "orcid": "0000-0002-7633-431X"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Jaclyn B. Champagne",
      "orcid": "0000-0002-6184-9097"
    },
    {
      "affs": [
        3
      ],
      "name": "Jiamu Huang",
      "orcid": "0000-0002-5721-0709"
    },
    {
      "affs": [
        0
      ],
      "name": "Jinyi Yang",
      "orcid": "0000-0001-5287-4242"
    },
    {
      "affs": [
        4,
        3
      ],
      "name": "Joseph F. Hennawi",
      "orcid": "0000-0002-7054-4332"
    },
    {
      "affs": [
        2
      ],
      "name": "Xiaohui Fan",
      "orcid": "0000-0003-3310-0131"
    },
    {
      "affs": [
        5,
        2
      ],
      "name": "Haowen Zhang",
      "orcid": "0000-0002-4321-3538"
    },
    {
      "affs": [
        6
      ],
      "name": "Tiago Costa",
      "orcid": "0000-0002-6748-2900"
    },
    {
      "affs": [
        7
      ],
      "name": "Roberto Decarli",
      "orcid": "0000-0002-2662-8803"
    },
    {
      "affs": [
        8
      ],
      "name": "Mélanie Habouzit",
      "orcid": "0000-0003-4750-0187"
    },
    {
      "affs": [
        9
      ],
      "name": "Fengwu Sun",
      "orcid": "0000-0002-4622-6617"
    },
    {
      "affs": [
        10
      ],
      "name": "Eduardo Bañados",
      "orcid": "0000-0002-2931-7824"
    },
    {
      "affs": [
        2,
        0
      ],
      "name": "Xiangyu Jin",
      "orcid": "0000-0002-5768-738X"
    },
    {
      "affs": [
        11,
        12
      ],
      "name": "Koki Kakiichi",
      "orcid": "0000-0001-6874-1321"
    },
    {
      "affs": [
        8
      ],
      "name": "R. A. Meyer",
      "orcid": "0000-0001-5492-4522"
    },
    {
      "affs": [
        13
      ],
      "name": "Yunjing Wu",
      "orcid": "0000-0003-0111-8249"
    },
    {
      "affs": [
        7,
        10
      ],
      "name": "S. Belladitta",
      "orcid": "0000-0003-4747-4484"
    },
    {
      "affs": [
        14
      ],
      "name": "Laura Blecha",
      "orcid": "0000-0002-2183-1087"
    },
    {
      "affs": [
        15,
        10
      ],
      "name": "Sarah E. I. Bosman",
      "orcid": "0000-0001-8582-7012"
    },
    {
      "affs": [
        13
      ],
      "name": "Zheng Cai",
      "orcid": "0000-0001-8467-6478"
    },
    {
      "affs": [
        9
      ],
      "name": "Thomas Connor",
      "orcid": "0000-0002-7898-7664"
    },
    {
      "affs": [
        10
      ],
      "name": "Frederick B. Davies",
      "orcid": "0000-0003-0821-3644"
    },
    {
      "affs": [
        16
      ],
      "name": "Anna–Christina Eilers",
      "orcid": "0000-0003-2895-6218"
    },
    {
      "affs": [
        17,
        18
      ],
      "name": "Zoltán Haiman",
      "orcid": "0000-0003-3633-5403"
    },
    {
      "affs": [
        19,
        20
      ],
      "name": "Hyunsung David Jun",
      "orcid": "0000-0003-1470-5901"
    },
    {
      "affs": [
        13
      ],
      "name": "Mingyu Li",
      "orcid": "0000-0001-6251-649X"
    },
    {
      "affs": [
        11,
        12
      ],
      "name": "Zihao Li",
      "orcid": "0000-0001-5951-459X"
    },
    {
      "affs": [
        2
      ],
      "name": "Weizhe Liu",
      "orcid": "0000-0003-3762-7344"
    },
    {
      "affs": [
        21,
        22
      ],
      "name": "Alessandro Lupi",
      "orcid": "0000-0001-6106-7821"
    },
    {
      "affs": [
        2
      ],
      "name": "Jianwei Lyu",
      "orcid": "0000-0002-6221-1829"
    },
    {
      "affs": [
        23
      ],
      "name": "Chiara Mazzucchelli",
      "orcid": "0000-0002-5941-5214"
    },
    {
      "affs": [
        24,
        25
      ],
      "name": "Masafusa Onoue",
      "orcid": "0000-0003-2984-6803"
    },
    {
      "affs": [
        9,
        4
      ],
      "name": "Elia Pizzati",
      "orcid": "0000-0002-9712-0038"
    },
    {
      "affs": [
        2
      ],
      "name": "Maria Pudoka",
      "orcid": "0000-0003-4924-5941"
    },
    {
      "affs": [
        3
      ],
      "name": "Sofía Rojas-Ruiz",
      "orcid": "0000-0003-2349-9310"
    },
    {
      "affs": [
        26
      ],
      "name": "Jan–Torge Schindler",
      "orcid": "0000-0002-4544-8242"
    },
    {
      "affs": [
        27
      ],
      "name": "Yue Guo Shen",
      "orcid": "0000-0003-1659-7035"
    },
    {
      "affs": [
        28
      ],
      "name": "Wei Leong Tee",
      "orcid": "0000-0003-0747-1780"
    },
    {
      "affs": [
        29,
        30,
        31
      ],
      "name": "Benny Trakhtenbrot",
      "orcid": "0000-0002-3683-7297"
    },
    {
      "affs": [
        32
      ],
      "name": "Maxime Trebitsch",
      "orcid": "0000-0002-6849-5375"
    },
    {
      "affs": [
        33,
        2
      ],
      "name": "Marianne Vestergaard",
      "orcid": "0000-0001-9191-9837"
    },
    {
      "affs": [
        34
      ],
      "name": "Marta Volonteri",
      "orcid": "0000-0002-3216-1322"
    },
    {
      "affs": [
        10
      ],
      "name": "Fabian Walter",
      "orcid": "0000-0003-4793-7880"
    },
    {
      "affs": [
        5,
        2
      ],
      "name": "Huanian Zhang",
      "orcid": "0000-0002-0123-9246"
    },
    {
      "affs": [
        35,
        36
      ],
      "name": "Siwei Zou",
      "orcid": "0000-0002-3983-6484"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/aya228w21cv14.bib",
  "cited_by": 19,
  "doi": "10.3847/1538-4357/ae7bfa",
  "fulltext_url": null,
  "id": "aya228w21cv14",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://doi.org/10.3847/1538-4357/ae7bfa",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "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": "W7167028771",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/ae7bfa/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-13",
  "publisher": "IOP Publishing",
  "ris": "https://research.draconitic.com/paper/aya228w21cv14.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:45Z",
      "native_id": "W7167028771",
      "source": "openalex",
      "url": "https://doi.org/10.3847/1538-4357/ae7bfa"
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Galaxies: Formation, Evolution, Phenomena",
      "subfield": "galaxies"
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  ],
  "title": "ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization",
  "title_text": "ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T13:20:45Z",
  "url": "https://research.draconitic.com/paper/aya228w21cv14",
  "venue": "The Astrophysical Journal",
  "versions": []
}