---
res:
  bibo_abstract:
  - Within the established framework of structure formation, galaxies start as systems
    of low stellar mass and gradually grow into far more massive galaxies. The existence
    of massive galaxies in the first billion years of the Universe, as suggested by
    recent observations, seems to challenge this model, as such galaxies would require
    highly efficient conversion of baryons into stars. An even greater challenge in
    this epoch is the existence of massive galaxies that have already ceased forming
    stars. However, robust detections of early massive quiescent galaxies have been
    challenging due to the coarse wavelength sampling of photometric surveys. Here
    we report the spectroscopic confirmation with the James Webb Space Telescope of
    the quiescent galaxy RUBIES-EGS-QG-1 at redshift z = 4.90, 1.2 billion years after
    the Big Bang. Deep stellar absorption features in the spectrum reveal that the
    stellar mass of the galaxy of 1011 M⊙ formed in a short 200 Myr burst of star
    formation, after which star formation activity dropped rapidly and persistently.
    According to current galaxy formation models, systems with such rapid stellar
    mass growth and early quenching are too rare to plausibly occur in the small area
    probed spectroscopically with JWST. Instead, the discovery of RUBIES-EGS-QG-1
    implies that early massive quiescent galaxies can be quenched earlier or exhaust
    gas available for star formation more efficiently than assumed at present.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Anna
      foaf_name: De Graaff, Anna
      foaf_surname: De Graaff
  - foaf_Person:
      foaf_givenName: David J.
      foaf_name: Setton, David J.
      foaf_surname: Setton
  - foaf_Person:
      foaf_givenName: Gabriel
      foaf_name: Brammer, Gabriel
      foaf_surname: Brammer
  - foaf_Person:
      foaf_givenName: Sam
      foaf_name: Cutler, Sam
      foaf_surname: Cutler
  - foaf_Person:
      foaf_givenName: Katherine A.
      foaf_name: Suess, Katherine A.
      foaf_surname: Suess
  - foaf_Person:
      foaf_givenName: Ivo
      foaf_name: Labbé, Ivo
      foaf_surname: Labbé
  - foaf_Person:
      foaf_givenName: Joel
      foaf_name: Leja, Joel
      foaf_surname: Leja
  - foaf_Person:
      foaf_givenName: Andrea
      foaf_name: Weibel, Andrea
      foaf_surname: Weibel
  - foaf_Person:
      foaf_givenName: Michael V.
      foaf_name: Maseda, Michael V.
      foaf_surname: Maseda
  - foaf_Person:
      foaf_givenName: Katherine E.
      foaf_name: Whitaker, Katherine E.
      foaf_surname: Whitaker
  - foaf_Person:
      foaf_givenName: Rachel
      foaf_name: Bezanson, Rachel
      foaf_surname: Bezanson
  - foaf_Person:
      foaf_givenName: Leindert A.
      foaf_name: Boogaard, Leindert A.
      foaf_surname: Boogaard
  - foaf_Person:
      foaf_givenName: Nikko J.
      foaf_name: Cleri, Nikko J.
      foaf_surname: Cleri
  - foaf_Person:
      foaf_givenName: Gabriella
      foaf_name: De Lucia, Gabriella
      foaf_surname: De Lucia
  - foaf_Person:
      foaf_givenName: Marijn
      foaf_name: Franx, Marijn
      foaf_surname: Franx
  - foaf_Person:
      foaf_givenName: Jenny E.
      foaf_name: Greene, Jenny E.
      foaf_surname: Greene
  - foaf_Person:
      foaf_givenName: Michaela
      foaf_name: Hirschmann, Michaela
      foaf_surname: Hirschmann
  - 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: Ian
      foaf_name: Mcconachie, Ian
      foaf_surname: Mcconachie
  - foaf_Person:
      foaf_givenName: Rohan P.
      foaf_name: Naidu, Rohan P.
      foaf_surname: Naidu
  - foaf_Person:
      foaf_givenName: Pascal A.
      foaf_name: Oesch, Pascal A.
      foaf_surname: Oesch
  - foaf_Person:
      foaf_givenName: Sedona H.
      foaf_name: Price, Sedona H.
      foaf_surname: Price
  - foaf_Person:
      foaf_givenName: Hans Walter
      foaf_name: Rix, Hans Walter
      foaf_surname: Rix
  - foaf_Person:
      foaf_givenName: Francesco
      foaf_name: Valentino, Francesco
      foaf_surname: Valentino
  - foaf_Person:
      foaf_givenName: Bingjie
      foaf_name: Wang, Bingjie
      foaf_surname: Wang
  - foaf_Person:
      foaf_givenName: Christina C.
      foaf_name: Williams, Christina C.
      foaf_surname: Williams
  bibo_doi: 10.1038/s41550-024-02424-3
  bibo_volume: 9
  dct_date: 2025^xs_gYear
  dct_identifier:
  - UT:001420347200001
  dct_isPartOf:
  - http://id.crossref.org/issn/2397-3366
  dct_language: eng
  dct_publisher: Springer Nature@
  dct_title: Efficient formation of a massive quiescent galaxy at redshift 4.9@
  fabio_hasPubmedId: '39990236'
...