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  • Fujimoto, SeijiKöpenhamns universitet,University of Copenhagen (author)

ALMA Lensing Cluster Survey: Bright [C ii] 158 mu m Lines from a Multiply Imaged Sub-L* Galaxy at z=6.0719

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021-04-22
  • American Astronomical Society,2021

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:2227cbd7-6b95-409f-b07c-f9b42e4f510a
  • https://doi.org/10.3847/1538-4357/abd7ecDOI
  • https://research.chalmers.se/publication/523767URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:for swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We present bright [C ii] 158 mu m line detections from a strongly magnified and multiply imaged (mu similar to 20-160) sub-L* (MUV=-19.75-0.44+0.55) Lyman-break galaxy (LBG) at z = 6.0719 +/- 0.0004, drawn from the ALMA Lensing Cluster Survey (ALCS). Emission lines are identified at 268.7 GHz at >= 8 sigma exactly at the positions of two multiple images of the LBG, behind the massive galaxy cluster RXCJ0600-2007. Our lens models, updated with the latest spectroscopy from VLT/MUSE, indicate that a sub region of the LBG crosses the caustic, and is lensed into a long (similar to 6 '') arc with a local magnification of mu similar to 160, for which the [C ii] line is also significantly detected. The source plane reconstruction resolves the interstellar medium (ISM) structure, showing that the [C ii] line is co-spatial with the rest-frame UV continuum at a scale of similar to 300 pc. The [C ii] line properties suggest that the LBG is a rotation-dominated system, whose velocity gradient explains a slight difference in redshifts between the whole LBG and its sub-region. The star formation rate (SFR)-L-[CII] relations, for whole and sub-regions of the LBG, are consistent with those of local galaxies. We evaluate the lower limit of the faint-end of the [C ii] luminosity function at z = 6, finding it to be consistent with predictions from semi-analytical models and from the local SFR-L-[CII] relation with a SFR function at z = 6. These results imply that the local SFR-L-[CII] relation is universal for a wide range of scales, including the spatially resolved ISM, the whole region of the galaxy, and the cosmic scale, even in the epoch of reionization.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Oguri, MasamuneUniversity of Tokyo, Japan,University of Tokyo, Japan,University of Tokyo, Japan (author)
  • Brammer, GabrielKöpenhamns universitet,University of Copenhagen (author)
  • Yoshimura, YukiUniversity of Tokyo, Japan,University of Tokyo, Japan (author)
  • Laporte, NicolasUniversity Of Cambridge (author)
  • Gonzalez-Lopez, JorgeUniversidad Diego Portales,Diego Portales University,Carnegie Institution for Science (author)
  • Caminha, Gabriel B.Rijksuniversiteit Groningen,University of Groningen (author)
  • Kohno, KotaroUniversity of Tokyo, Japan,University of Tokyo, Japan (author)
  • Zitrin, AdiBen-Gurion University of the Negev (author)
  • Richard, JohanUniversité de Lyon (author)
  • Ouchi, MasamiUniversity of Tokyo, Japan,National Astronomical Observatory of Japan (author)
  • Bauer, Franz E.Instituto Milenio de Astrofísica,Millennium Institute of Astrophysics,Pontificia Universidad Catolica de Chile (author)
  • Smail, IanDurham University (author)
  • Hatsukade, BunyoUniversity of Tokyo, Japan (author)
  • Ono, YoshiakiUniversity of Tokyo, Japan (author)
  • Kokorev, VasilyKöpenhamns universitet,University of Copenhagen (author)
  • Umehata, HidekiUniversity of Tokyo, Japan,RIKEN (author)
  • Schaerer, DanielUniversité de Genève,University of Geneva,Centre national de la recherche scientifique (CNRS) (author)
  • Knudsen, Kirsten Kraiberg,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kraiberg (author)
  • Sun, FengwuUniversity of Arizona (author)
  • Magdis, GeorgiosKöpenhamns universitet,University of Copenhagen,Danmarks Tekniske Universitet,Technical University of Denmark (author)
  • Valentino, FrancescoKöpenhamns universitet,University of Copenhagen (author)
  • Ao, YipingChinese Academy of Sciences (author)
  • Toft, SuneKöpenhamns universitet,University of Copenhagen (author)
  • Dessauges-Zavadsky, MiroslavaUniversité de Genève,University of Geneva (author)
  • Shimasaku, KazuhiroUniversity of Tokyo, Japan,University of Tokyo, Japan (author)
  • Caputi, KarinaKöpenhamns universitet,University of Copenhagen,Rijksuniversiteit Groningen,University of Groningen (author)
  • Kusakabe, HarukaUniversité de Genève,University of Geneva (author)
  • Morokuma-Matsui, KanaUniversity of Tokyo, Japan (author)
  • Shotaro, KikuchiharaUniversity of Tokyo, Japan,University of Tokyo, Japan (author)
  • Egami, EiichiUniversity of Arizona (author)
  • Lee, Minju M.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Rawle, TimothyEuropean Space Research and Technology Centre (ESA ESTEC) (author)
  • Espada, DanielSKA Organisation (author)
  • University of Tokyo, JapanKöpenhamns universitet (creator_code:org_t)

Related titles

  • In:Astrophysical Journal: American Astronomical Society911:21538-43570004-637X

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