---
res:
  bibo_abstract:
  - The resonant scattering nature of Lyα photons interacting with neutral hydrogen
    makes Lyα emitters (LAEs) robust tracers of the intergalactic neutral hydrogen
    fraction, and thus sensitive probes of cosmic reionization. We present an extensive
    study of the Lyα evolution from galaxies at 4.5 ≤ z ≤ 11 in the UDS field, observed
    as part of the CAPERS survey, and complemented with spectra from the DAWN JWST
    Archive. The combined sample includes 651 spectroscopically confirmed Lyα-break
    galaxies, among which we find 73 S/N > 3 LAEs in JWST-NIRSpec PRISM spectra. We
    trace the redshift evolution of the LAE fraction with EW0 > 25 Å (XLyα) between
    z = 5 and z = 9, extending such an analysis to the UDS field for the first time.
    At z = 5 and 6, the UDS results agree with the average JWST XLyα values from multiple
    fields. However, JWST measurements are consistently lower than ground-based results.
    To investigate this, we compare JWST observations to a population of star-forming
    galaxies at z ∼ 6 observed with VLT-FORS2. We find that a Lyα slit-loss of 35
    ± 10% in JWST spectra accounts for the offset, as the resonant Lyα emission is
    more spatially extended than the stellar continuum. From z = 6 to 7, the UDS field
    shows a significant drop in Lyα visibility, from which we infer a neutral hydrogen
    fraction of XHI = 0.7–0.9. Finally, we identify two robust ionized bubbles at
    z = 7.29 and 7.77, with radii of Rion = 0.6 and 0.5 physical Mpc and photometric
    overdensities of N/⟨N⟩ = 3 and 4, based on candidate counts down to the photometric
    completeness limit. Compared to the large ionized region at z ∼ 7 in the EGS field,
    these results indicate significant field-to-field variation, supporting a patchy,
    inhomogeneous reionization process.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: L.
      foaf_name: Napolitano, L.
      foaf_surname: Napolitano
  - foaf_Person:
      foaf_givenName: L.
      foaf_name: Pentericci, L.
      foaf_surname: Pentericci
  - foaf_Person:
      foaf_givenName: M.
      foaf_name: Dickinson, M.
      foaf_surname: Dickinson
  - foaf_Person:
      foaf_givenName: P.
      foaf_name: Arrabal Haro, P.
      foaf_surname: Arrabal Haro
  - foaf_Person:
      foaf_givenName: A. J.
      foaf_name: Taylor, A. J.
      foaf_surname: Taylor
  - foaf_Person:
      foaf_givenName: A.
      foaf_name: Calabrò, A.
      foaf_surname: Calabrò
  - foaf_Person:
      foaf_givenName: A.
      foaf_name: Bhagwat, A.
      foaf_surname: Bhagwat
  - foaf_Person:
      foaf_givenName: P.
      foaf_name: Santini, P.
      foaf_surname: Santini
  - foaf_Person:
      foaf_givenName: F.
      foaf_name: Arevalo-Gonzalez, F.
      foaf_surname: Arevalo-Gonzalez
  - foaf_Person:
      foaf_givenName: R.
      foaf_name: Begley, R.
      foaf_surname: Begley
  - foaf_Person:
      foaf_givenName: M.
      foaf_name: Castellano, M.
      foaf_surname: Castellano
  - foaf_Person:
      foaf_givenName: B.
      foaf_name: Ciardi, B.
      foaf_surname: Ciardi
  - foaf_Person:
      foaf_givenName: C. T.
      foaf_name: Donnan, C. T.
      foaf_surname: Donnan
  - foaf_Person:
      foaf_givenName: D.
      foaf_name: Dottorini, D.
      foaf_surname: Dottorini
  - foaf_Person:
      foaf_givenName: J. S.
      foaf_name: Dunlop, J. S.
      foaf_surname: Dunlop
  - foaf_Person:
      foaf_givenName: S. L.
      foaf_name: Finkelstein, S. L.
      foaf_surname: Finkelstein
  - foaf_Person:
      foaf_givenName: A.
      foaf_name: Fontana, A.
      foaf_surname: Fontana
  - foaf_Person:
      foaf_givenName: M.
      foaf_name: Giavalisco, M.
      foaf_surname: Giavalisco
  - foaf_Person:
      foaf_givenName: M.
      foaf_name: Hirschmann, M.
      foaf_surname: Hirschmann
  - foaf_Person:
      foaf_givenName: I.
      foaf_name: Jung, I.
      foaf_surname: Jung
  - foaf_Person:
      foaf_givenName: A. M.
      foaf_name: Koekemoer, A. M.
      foaf_surname: Koekemoer
  - foaf_Person:
      foaf_givenName: V.
      foaf_name: Kokorev, V.
      foaf_surname: Kokorev
  - foaf_Person:
      foaf_givenName: M.
      foaf_name: Llerena, M.
      foaf_surname: Llerena
  - foaf_Person:
      foaf_givenName: R. A.
      foaf_name: Lucas, R. A.
      foaf_surname: Lucas
  - foaf_Person:
      foaf_givenName: Sara
      foaf_name: Mascia, Sara
      foaf_surname: Mascia
      foaf_workInfoHomepage: http://www.librecat.org/personId=edaf889c-c7cd-11ef-ab1b-bb28c431bd29
  - foaf_Person:
      foaf_givenName: E.
      foaf_name: Merlin, E.
      foaf_surname: Merlin
  - foaf_Person:
      foaf_givenName: P. G.
      foaf_name: Pérez-González, P. G.
      foaf_surname: Pérez-González
  - foaf_Person:
      foaf_givenName: T. M.
      foaf_name: Stanton, T. M.
      foaf_surname: Stanton
  - foaf_Person:
      foaf_givenName: R.
      foaf_name: Tripodi, R.
      foaf_surname: Tripodi
  - foaf_Person:
      foaf_givenName: X.
      foaf_name: Wang, X.
      foaf_surname: Wang
  - foaf_Person:
      foaf_givenName: B. J.
      foaf_name: Weiner, B. J.
      foaf_surname: Weiner
  bibo_doi: 10.1051/0004-6361/202556912
  bibo_volume: 708
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-6361
  - http://id.crossref.org/issn/1432-0746
  dct_language: eng
  dct_publisher: EDP Sciences@
  dct_title: 'Lyα visibility from z = 4.5 to 11 in the UDS field: Evidence for a high
    neutral hydrogen fraction and small ionized bubbles at z ∼ 7@'
...