{
  "abstract": "We present the first high-significance spectroscopic stacked kinetic Sunyaev-Zel’dovich (kSZ) measurements of circumgalactic gas profiles for both bright galaxy survey (BGS) and emission line galaxy (ELG) tracers, combining DESI Data Release 2 with ACT Data Release 6. Using reconstructed line-of-sight velocities from the DESI galaxies and high-resolution ACT temperature maps, we detect the kSZ signal at high significance, reaching signal-to-noise ratios of up to ∼ 9 for BGS and ∼ 7.5 for ELGs in optimal stellar-mass selections. Together with the Luminous red galaxies (LRGs) measurements presented in Paper I, these constitute the most significant kSZ detections from any spectroscopic survey to date. We perform the analysis in both real and harmonic space, obtaining consistent results. By splitting both tracers into stellar-mass bins, we study the scaling of the kSZ amplitude with galaxy properties. Combining the kSZ measurements with ACT Data Release 6 (DR6) cosmic microwave background lensing maps enables a joint calibration of the galaxy-halo connection and the gas fractions of host halos. For the BGS galaxies, we observe low gas fractions around the virial radius relative to standard expectations, likely attributable to active galactic nuclei (AGN) activity. We find some evidence for higher-mass halos retaining a larger fraction of their baryons, consistent with more efficient feedback in lower-mass systems. For the ELG sample, dominated by blue, star-forming galaxies, we provide the first detection of the gas distribution in ELG host halos. The ELGs appear to exhibit relatively high gas fractions, which points to the possibility of weaker feedback (due to, e.g., low AGN and supernova feedback activity) at their mass scale. Finally, we present generalized Navarro-Frenk-White fits to the harmonic-space measurements, providing a compact parametrization of gas profiles for forward modeling in large-scale structure analyses.",
  "abstract_shown": true,
  "affiliations": [
    "Institute of Astronomy",
    "Kavli Institute for Cosmology Cambridge",
    "Berkeley Center for Cosmological Physics, Department of Physics, University of California, Berkeley, California 94720, USA",
    "Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA",
    "SLAC National Accelerator Laboratory",
    "Stanford University",
    "Boston University",
    "INAF-Osservatorio Astronomico di Brera",
    "Università degli Studi di Milano",
    "University College London",
    "Institut d’Estudis Espacials de Catalunya (IEEC)",
    "Institute of Space Sciences",
    "Ciudad Universitaria",
    "NSF NOIRLab",
    "University of Pittsburgh",
    "University of Toronto",
    "Universidad de los Andes",
    "University of Portsmouth",
    "University of Virginia",
    "Fermi National Accelerator Laboratory",
    "The Ohio State University",
    "University of Queensland",
    "University of Michigan",
    "The University of Texas at Dallas",
    "Southern Methodist University",
    "Sorbonne Université",
    "Department of Astronomy and Astrophysics, UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, California 95064, USA",
    "Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95065, USA",
    "Barcelona Institute of Science and Technology",
    "Departament de Física, Serra Húnter, Universitat Autònoma de Barcelona",
    "Institució Catalana de Recerca i Estudis Avançats",
    "IRFU",
    "Perimeter Institute for Theoretical Physics",
    "University of Waterloo",
    "Instituto de Astrofísica de Andalucía (CSIC)",
    "Universitat Politècnica de Catalunya",
    "Sejong University",
    "Abastumani Astrophysical Observatory",
    "Ilia State University",
    "Kansas State University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 53,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Boryana Hadzhiyska",
      "orcid": "0000-0002-2312-3121"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Sergio Ferraro",
      "orcid": "0000-0003-4992-7854"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "F. J. Qu"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "B. Ried Guachalla"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "E. Schaan"
    },
    {
      "affs": [
        3
      ],
      "name": "J. Aguilar",
      "orcid": "0000-0003-0822-452X"
    },
    {
      "affs": [
        6
      ],
      "name": "Steven P. Ahlen",
      "orcid": "0000-0001-6098-7247"
    },
    {
      "affs": [
        7,
        8
      ],
      "name": "D. Bianchi",
      "orcid": "0000-0001-9712-0006"
    },
    {
      "affs": [
        9
      ],
      "name": "D. Brooks",
      "orcid": "0000-0002-8458-5047"
    },
    {
      "affs": [
        10,
        11
      ],
      "name": "Francisco Javier Castander",
      "orcid": "0000-0001-7316-4573"
    },
    {
      "affs": [
        3
      ],
      "name": "E. Chaussidon",
      "orcid": "0000-0001-8996-4874"
    },
    {
      "affs": [
        3
      ],
      "name": "T. Claybaugh",
      "orcid": "0000-0002-5024-6987"
    },
    {
      "affs": [
        12
      ],
      "name": "A. de la Macorra"
    },
    {
      "affs": [
        13
      ],
      "name": "Arjun Dey",
      "orcid": "0000-0002-4928-4003"
    },
    {
      "affs": [
        14,
        15
      ],
      "name": "Biprateep Dey",
      "orcid": "0000-0002-5665-7912"
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    {
      "affs": [
        9
      ],
      "name": "P. Doel",
      "orcid": "0000-0002-6397-4457"
    },
    {
      "affs": [
        16
      ],
      "name": "J. E. Forero-Romero",
      "orcid": "0000-0002-2890-3725"
    },
    {
      "affs": [
        10,
        11,
        17
      ],
      "name": "ENRIQUE GAZTAÑAGA",
      "orcid": "0000-0001-9632-0815"
    },
    {
      "affs": [
        18
      ],
      "name": "Satya Gontcho A Gontcho",
      "orcid": "0000-0003-3142-233X"
    },
    {
      "affs": [
        19
      ],
      "name": "G. Gutierrez",
      "orcid": "0000-0003-0825-0517"
    },
    {
      "affs": [
        3
      ],
      "name": "J. Guy"
    },
    {
      "affs": [
        20
      ],
      "name": "K. Honscheid"
    },
    {
      "affs": [
        21
      ],
      "name": "Cullan Howlett",
      "orcid": "0000-0002-1081-9410"
    },
    {
      "affs": [
        22
      ],
      "name": "Dragan Huterer A",
      "orcid": "0000-0001-6558-0112"
    },
    {
      "affs": [
        23
      ],
      "name": "Mustapha Ishak",
      "orcid": "0000-0002-6024-466X"
    },
    {
      "affs": [
        13
      ],
      "name": "R. Joyce"
    },
    {
      "affs": [
        24
      ],
      "name": "R. Kehoe",
      "orcid": "0000-0002-7101-697X"
    },
    {
      "affs": [
        3
      ],
      "name": "Theodore S. Kisner",
      "orcid": "0000-0003-3510-7134"
    },
    {
      "affs": [
        3
      ],
      "name": "Anthony Kremin",
      "orcid": "0000-0001-6356-7424"
    },
    {
      "affs": [
        9
      ],
      "name": "O. Lahav"
    },
    {
      "affs": [
        3
      ],
      "name": "Martin Landriau",
      "orcid": "0000-0003-1838-8528"
    },
    {
      "affs": [
        25
      ],
      "name": "Laurent Le Guillou",
      "orcid": "0000-0001-7178-8868"
    },
    {
      "affs": [
        26,
        27
      ],
      "name": "Alexie Leauthaud",
      "orcid": "0000-0002-3677-3617"
    },
    {
      "affs": [
        28,
        29
      ],
      "name": "Marc Manera",
      "orcid": "0000-0003-4962-8934"
    },
    {
      "affs": [
        20
      ],
      "name": "Paul Martini",
      "orcid": "0000-0002-4279-4182"
    },
    {
      "affs": [
        13
      ],
      "name": "Aaron Meisner",
      "orcid": "0000-0002-1125-7384"
    },
    {
      "affs": [
        28,
        30
      ],
      "name": "R. Miquel"
    },
    {
      "affs": [
        17
      ],
      "name": "S. Nadathur",
      "orcid": "0000-0001-9070-3102"
    },
    {
      "affs": [
        31,
        3
      ],
      "name": "N. Palanque‐Delabrouille",
      "orcid": "0000-0003-3188-784X"
    },
    {
      "affs": [
        32,
        33
      ],
      "name": "Will J. Percival",
      "orcid": "0000-0002-0644-5727"
    },
    {
      "affs": [
        34
      ],
      "name": "Francisco Prada",
      "orcid": "0000-0001-7145-8674"
    },
    {
      "affs": [
        35
      ],
      "name": "Ignasi Pérez-Ràfols",
      "orcid": "0000-0001-6979-0125"
    },
    {
      "affs": [
        36
      ],
      "name": "G Rossi"
    },
    {
      "affs": [
        37,
        38,
        39
      ],
      "name": "L. Samushia"
    },
    {
      "name": "E. Sanchez"
    },
    {
      "name": "Edward F. Schlafly",
      "orcid": "0000-0002-3569-7421"
    },
    {
      "affs": [
        3
      ],
      "name": "David J. Schlegel",
      "orcid": "0000-0002-5042-5088"
    },
    {
      "affs": [
        3
      ],
      "name": "Joseph Harry Silber",
      "orcid": "0000-0002-3461-0320"
    },
    {
      "affs": [
        13
      ],
      "name": "David Sprayberry",
      "orcid": "0000-0001-7583-6441"
    },
    {
      "affs": [
        22
      ],
      "name": "Gregory Tarlé",
      "orcid": "0000-0003-1704-0781"
    },
    {
      "affs": [
        13
      ],
      "name": "Benjamin A. Weaver"
    },
    {
      "affs": [
        3
      ],
      "name": "R. Zhou"
    },
    {
      "name": "H. Zou"
    }
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  "bibtex": "https://research.draconitic.com/paper/12ew684f9rnhq.bib",
  "cited_by": 19,
  "doi": "10.1103/g381-bz2j",
  "fulltext_url": null,
  "id": "12ew684f9rnhq",
  "issns": [
    "2470-0010",
    "2470-0029",
    "2470-0037"
  ],
  "landing_url": "https://doi.org/10.1103/g381-bz2j",
  "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": [
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      "3103|Cosmology and Gravitation Theories"
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  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-30",
  "publisher": "American Physical Society",
  "ris": "https://research.draconitic.com/paper/12ew684f9rnhq.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:45Z",
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      "url": "https://doi.org/10.1103/g381-bz2j"
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
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  ],
  "title": "Precision kinematic Sunyaev-Zel’dovich measurements across halo mass and redshift with DESI DR2 and ACT DR6. II. Bright galaxy survey and emission-line galaxies",
  "title_text": "Precision kinematic Sunyaev-Zel’dovich measurements across halo mass and redshift with DESI DR2 and ACT DR6. II. Bright galaxy survey and emission-line galaxies",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T13:20:45Z",
  "url": "https://research.draconitic.com/paper/12ew684f9rnhq",
  "venue": "Physical review. D/Physical review. D.",
  "versions": []
}