{
  "abstract": "We present a galaxy group catalog built from Data Release 1 of the Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey, using the Self Calibrated Group Finder. The algorithm uses clustering data from the observed sample to calibrate the Group Finder's free parameters, rather than simulations. The catalog contains 2,229,741 galaxies from ~$2680$ deg$^2$ of sky with 3-pass coverage and $r$-band fluxes $\\lt 19.5$. The catalog classifies all galaxies in the flux-limited sample as centrals or satellites and estimates host dark matter halo masses. We show the satellite fraction $f_{\\rm sat}$, luminosity halo mass relation, stellar halo mass relation and halo occupation distributions (HODs) from the catalog. We find these non-parametric HODs can be fit by standard HOD models, with satellite power-law index $α$ values around 0.75 for star-forming galaxies and around 1.1 for quiescent objects. In agreement with recent results, we find that the quenched fraction of central galaxies depends mostly on halo mass and is nearly independent of central galaxy stellar mass for galaxies more massive than $10^{10.3}$ $M_\\odot h^{-1}$ and halos more massive than $10^{12.2}$ $M_\\odot h^{-1}$. In an appendix, we introduce a new Hybrid Nearest Neighbor (HNN) technique to mitigate systematics from fiber incompleteness. HNN uses photometric redshifts and multiple on-sky neighbors to assign redshifts to unobserved targets. Calibrated on DESI Survey Validation 3 data, our technique yields correct redshifts $\\sim 50\\%$ of the time and produces unbiased halo occupation statistics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.20919",
  "author_total": 48,
  "authors": [
    {
      "name": "Ian Williams"
    },
    {
      "name": "Jeremy Tinker"
    },
    {
      "name": "Kai Wang"
    },
    {
      "name": "Jessica Nicole Aguilar"
    },
    {
      "name": "Steven Ahlen"
    },
    {
      "name": "Florian Beutler"
    },
    {
      "name": "Davide Bianchi"
    },
    {
      "name": "David Brooks"
    },
    {
      "name": "Aurelio Carnero Rosell"
    },
    {
      "name": "Francisco Javier Castander"
    },
    {
      "name": "Todd Claybaugh"
    },
    {
      "name": "Shaun Cole"
    },
    {
      "name": "Axel de la Macorra"
    },
    {
      "name": "Jaime E Forero-Romero"
    },
    {
      "name": "Enrique Gaztañaga"
    },
    {
      "name": "Satya Gontcho A. Gontcho"
    },
    {
      "name": "Gaston Gutierrez"
    },
    {
      "name": "Changhoon Hahn"
    },
    {
      "name": "Mustapha Ishak"
    },
    {
      "name": "Stephanie Juneau"
    },
    {
      "name": "Robert Kehoe"
    },
    {
      "name": "Anthony Kremin"
    },
    {
      "name": "Claire Lamman"
    },
    {
      "name": "Martin Landriau"
    },
    {
      "name": "Laurent Le Guillou"
    },
    {
      "name": "Alexie Leauthaud"
    },
    {
      "name": "Marc Manera"
    },
    {
      "name": "Aaron Meisner"
    },
    {
      "name": "Ramon Miquel"
    },
    {
      "name": "John Moustakas"
    },
    {
      "name": "Seshadri Nadathur"
    },
    {
      "name": "Enrique Paillas"
    },
    {
      "name": "Will Percival"
    },
    {
      "name": "Francisco Prada"
    },
    {
      "name": "Ignasi Pérez-Ràfols"
    },
    {
      "name": "Corentin Ravoux"
    },
    {
      "name": "Ashley J Ross"
    },
    {
      "name": "Graziano Rossi"
    },
    {
      "name": "Rossana Ruggeri"
    },
    {
      "name": "Lado Samushia"
    },
    {
      "name": "Eusebio Sanchez"
    },
    {
      "name": "Christoph Saulder"
    },
    {
      "name": "David Schlegel"
    },
    {
      "name": "Joseph Harry Silber"
    },
    {
      "name": "Małgorzata Siudek"
    },
    {
      "name": "Gregory Tarlé"
    },
    {
      "name": "Rajeev Vaisakh"
    },
    {
      "name": "Benjamin Alan Weaver"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/11z3abfezrkg7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.20919",
  "fulltext_url": null,
  "id": "11z3abfezrkg7",
  "issns": [],
  "landing_url": "https://hal.science/hal-05828740v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "astro-ph.GA"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.astr"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7222644947",
  "pdf_url": "https://arxiv.org/pdf/2610.20919",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/11z3abfezrkg7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "hal-05828740",
      "source": "hal",
      "url": "https://hal.science/hal-05828740v1"
    },
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.20919",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.20919"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "Self Calibrated Galaxy Groups from the DESI DR1 Bright Galaxy Survey",
  "title_text": "Self Calibrated Galaxy Groups from the DESI DR1 Bright Galaxy Survey",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/11z3abfezrkg7",
  "venue": "HAL",
  "versions": []
}