---
res:
  bibo_abstract:
  - "We investigate the association between galaxies and neutral O I absorption systems
    at z ∼ 6, which trace metalenriched gas during the epoch of reionization. We identify
    40 galaxies across six quasar fields, residing in 15\r\noverdensities within 300
    kpc of the background sight lines. Five O I absorption systems are associated
    with five of\r\nthese overdensities, yielding a covering fraction of\r\n0.27 0.10\r\n+0.13\r\nwithin
    300 kpc. The absorption occurs beyond typical\r\nvirial radii, indicating that
    the gas traces extended overdensity environments rather than individual galaxy
    halos,\r\nunlike the z ∼ 0 circumgalactic medium (CGM), which is largely bound
    to halos. These galaxy-associated\r\nabsorbers account for ∼35% of all O I systems
    seen in blind quasar surveys, implying the remainder arise in\r\nlower-mass galaxies
    below our detection threshold or in dense neutral intergalactic medium pockets.
    The CGM\r\naround these galaxies contains ≳ 2 × 106 M⊙ of oxygen, comparable to
    the interstellar medium oxygen mass of\r\nthe galaxies themselves, suggesting
    that the surrounding environment holds as much metal mass as the galaxies.\r\nAll
    five galaxy-associated systems show significantly higher\r\nlog NCII NOI ( / )\r\nratios
    than absorbers lacking galaxy\r\nassociations. Furthermore, relative abundance
    ratios ([Si/O], [C/O]) reveal that four of the five exhibit\r\nenrichment patterns
    consistent with Population III nucleosynthesis at the outskirts of galaxy overdensities.
    These\r\nrare systems offer a unique window into the role of first-generation
    stars in shaping the early metal enrichment of\r\ngalaxies and their environments.@eng"
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jack
      foaf_name: Higginson, Jack
      foaf_surname: Higginson
  - foaf_Person:
      foaf_givenName: Rongmon
      foaf_name: Bordoloi, Rongmon
      foaf_surname: Bordoloi
  - foaf_Person:
      foaf_givenName: Robert A.
      foaf_name: Simcoe, Robert A.
      foaf_surname: Simcoe
  - foaf_Person:
      foaf_givenName: Jorryt J
      foaf_name: Matthee, Jorryt J
      foaf_surname: Matthee
      foaf_workInfoHomepage: http://www.librecat.org/personId=7439a258-f3c0-11ec-9501-9df22fe06720
    orcid: 0000-0003-2871-127X
  - foaf_Person:
      foaf_givenName: Daichi
      foaf_name: Kashino, Daichi
      foaf_surname: Kashino
  - foaf_Person:
      foaf_givenName: Ruari
      foaf_name: Mackenzie, Ruari
      foaf_surname: Mackenzie
  - foaf_Person:
      foaf_givenName: Ivan
      foaf_name: Kramarenko, Ivan
      foaf_surname: Kramarenko
      foaf_workInfoHomepage: http://www.librecat.org/personId=9a9394cb-3200-11ee-973b-f5ba2a8b16e4
    orcid: 0000-0001-5346-6048
  - foaf_Person:
      foaf_givenName: Simon J.
      foaf_name: Lilly, Simon J.
      foaf_surname: Lilly
  - foaf_Person:
      foaf_givenName: Anna-Christina
      foaf_name: Eilers, Anna-Christina
      foaf_surname: Eilers
  - foaf_Person:
      foaf_givenName: Rohan P.
      foaf_name: Naidu, Rohan P.
      foaf_surname: Naidu
  - foaf_Person:
      foaf_givenName: Minghao
      foaf_name: Yue, Minghao
      foaf_surname: Yue
  bibo_doi: 10.3847/1538-4357/ae3e81
  bibo_issue: '1'
  bibo_volume: 999
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-637X
  - http://id.crossref.org/issn/1538-4357
  dct_language: eng
  dct_publisher: IOP Publishing@
  dct_title: EIGER. VIII. First stars signatures in the connection between O I absorption
    and galaxies in the epoch of reionization@
...