---
res:
  bibo_abstract:
  - We investigate the nature and spectroscopic diversity of early galaxies from a
    sample of 41 sources at $z\geqslant 10$ with James Webb Space Telescope (JWST)/NIRSpec
    prism observations. We compare the properties of strong ultraviolet (UV) line
    emitters, traced by intense C iv emission, with those of more ‘typical’ sources
    with weak or undetected C iv. The more typical (or ‘C iv-weak’) sources reveal
    significant scatter in their C iii] line strengths, UV continuum slopes, and physical
    sizes, spanning C iii] equivalent widths (EWs) of $\sim$1–51 Å, UV slopes of $\beta
    \sim -1.6$ to $-2.6$, and half-light radii of $\sim$50–1000 pc. In contrast, C iv-strong
    sources occupy the tail of these distributions, with C iii] EWs of 16–51 Å, UV
    slopes $\beta \lesssim -2.5$, compact morphologies ($r_{\rm 50} \lesssim 100$ pc),
    and elevated star formation surface densities ($\Sigma _{\rm SFR} \gtrsim 100\,
    M_\odot \, \mathrm{yr}^{-1}\, \mathrm{kpc}^{-2}$). These properties suggest concentrated
    starbursts that temporarily outshine the host galaxy. Comparing average properties
    from composite spectra, we find the diversity of the sample is primarily driven
    by bursty star formation on very short time-scales ($\le$3 Myr), with strong C iv
    emitters observed at the apex of the bursts and sources devoid of emission lines
    during relative inactivity. An apparent association between strong C iv and enhanced
    nitrogen abundance suggests both may be modulated by the same duty cycle, reflecting
    a generic mode of star formation. We show that active galactic nuclei are unlikely
    to contribute significantly to this duty cycle based on UV line diagnostics and
    photoionization models. Our results support a picture whereby brief bursts and
    lulls can explain the spectral diversity and early growth of bright galaxies in
    the first 500 Myr.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Guido
      foaf_name: Roberts-Borsani, Guido
      foaf_surname: Roberts-Borsani
  - foaf_Person:
      foaf_givenName: Pascal A
      foaf_name: Oesch, Pascal A
      foaf_surname: Oesch
  - foaf_Person:
      foaf_givenName: Richard
      foaf_name: Ellis, Richard
      foaf_surname: Ellis
  - foaf_Person:
      foaf_givenName: Andrea
      foaf_name: Weibel, Andrea
      foaf_surname: Weibel
  - foaf_Person:
      foaf_givenName: Emma
      foaf_name: Giovinazzo, Emma
      foaf_surname: Giovinazzo
  - foaf_Person:
      foaf_givenName: Rychard
      foaf_name: Bouwens, Rychard
      foaf_surname: Bouwens
  - foaf_Person:
      foaf_givenName: Pratika
      foaf_name: Dayal, Pratika
      foaf_surname: Dayal
  - foaf_Person:
      foaf_givenName: Adriano
      foaf_name: Fontana, Adriano
      foaf_surname: Fontana
  - foaf_Person:
      foaf_givenName: Kasper E
      foaf_name: Heintz, Kasper E
      foaf_surname: Heintz
  - 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: Romain A
      foaf_name: Meyer, Romain A
      foaf_surname: Meyer
  - foaf_Person:
      foaf_givenName: Laura
      foaf_name: Pentericci, Laura
      foaf_surname: Pentericci
  - foaf_Person:
      foaf_givenName: Alice
      foaf_name: Shapley, Alice
      foaf_surname: Shapley
  - foaf_Person:
      foaf_givenName: Sandro
      foaf_name: Tacchella, Sandro
      foaf_surname: Tacchella
  - foaf_Person:
      foaf_givenName: Tommaso
      foaf_name: Treu, Tommaso
      foaf_surname: Treu
  - foaf_Person:
      foaf_givenName: Fabian
      foaf_name: Walter, Fabian
      foaf_surname: Walter
  - foaf_Person:
      foaf_givenName: Hakim
      foaf_name: Atek, Hakim
      foaf_surname: Atek
  - foaf_Person:
      foaf_givenName: Sownak
      foaf_name: Bose, Sownak
      foaf_surname: Bose
  - foaf_Person:
      foaf_givenName: Marco
      foaf_name: Castellano, Marco
      foaf_surname: Castellano
  - foaf_Person:
      foaf_givenName: Yoshinobu
      foaf_name: Fudamoto, Yoshinobu
      foaf_surname: Fudamoto
  - foaf_Person:
      foaf_givenName: Takahiro
      foaf_name: Morishita, Takahiro
      foaf_surname: Morishita
  - foaf_Person:
      foaf_givenName: Rohan P
      foaf_name: Naidu, Rohan P
      foaf_surname: Naidu
  - foaf_Person:
      foaf_givenName: Ryan L
      foaf_name: Sanders, Ryan L
      foaf_surname: Sanders
  - foaf_Person:
      foaf_givenName: Arjen
      foaf_name: van der Wel, Arjen
      foaf_surname: van der Wel
  bibo_doi: 10.1093/mnras/stag701
  bibo_issue: '3'
  bibo_volume: 548
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0035-8711
  - http://id.crossref.org/issn/1365-2966
  dct_language: eng
  dct_publisher: Oxford University Press@
  dct_title: 'JWST spectroscopic insights into the diversity of galaxies in the first
    500 Myr: Short-lived snapshots along a common evolutionary pathway@'
...