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  • Bakx, Tom,1990Chalmers tekniska högskola,Chalmers University of Technology,Nagoya University,National Astronomical Observatory of Japan (author)

A dusty protocluster surrounding the binary galaxy HerBS-70 at z = 2.3

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • 2024
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:1f4ce1d3-3fa7-43fc-becb-82f90343b75c
  • https://research.chalmers.se/publication/541256URI
  • https://doi.org/10.1093/mnras/stae1155DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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

Notes

  • We report on deep SCUBA-2 observations at 850 μm and NOrthern Extended Millimetre Array (NOEMA) spectroscopic measurements at 2 mm of the environment surrounding the luminous, massive (M∗ ≈ 2 × 1011 M☉) Herschel-selected source HerBS-70. This source was revealed by previous NOEMA observations to be a binary system of dusty star-forming galaxies at z = 2.3, with the east component (HerBS-70E) hosting an active galactic nucleus. The SCUBA-2 observations detected, in addition to the binary system, 21 sources at >3.5σ over an area of ∼25 square comoving Mpc with a sensitivity of 1σ850 = 0.75 mJy. The surface density of continuum sources around HerBS-70 is three times higher than for field galaxies. The NOEMA spectroscopic measurements confirm the protocluster membership of three of the nine brightest sources through their CO(4–3) line emission, yielding a volume density 36 times higher than for field galaxies. All five confirmed sub-mm galaxies in the HerBS-70 system have relatively short gas depletion times (80−500 Myr), indicating the onset of quenching for this protocluster core due to the depletion of gas. The dark matter halo mass of the HerBS-70 system is estimated around 5 × 1013 M☉, with a projected current-day mass of 1015 M☉, similar to the local Virgo and Coma clusters. These observations support the claim that DSFGs, in particular the ones with observed multiplicity, can trace cosmic overdensities.

Subject headings and genre

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

  • Berta, S.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Dannerbauer, H.Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
  • Cox, P.Institut d 'Astrophysique de Paris (author)
  • Butler, K. M.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Hagimoto, MasatoNagoya University (author)
  • Hughes, D.Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE) (author)
  • Riechers, D. A.Universität zu Köln,University of Cologne (author)
  • van der Werf, P.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Yang, Chentao,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)chentao (author)
  • Baker, A. J.University of the Western Cape,Rutgers University (author)
  • Beelen, A.Centre national de la recherche scientifique (CNRS) (author)
  • Bendo, G. J.University of Manchester (author)
  • Borsato, E.Università Degli Studi di Padova,University of Padua (author)
  • Buat, V.Centre National d'Etudes Spatiales (CNES) (author)
  • Cooray, A.University of California at Irvine (UCI) (author)
  • Dunne, L.Cardiff University (author)
  • Dye, S.University Of Nottingham (author)
  • Eales, S.Cardiff University (author)
  • Gavazzi, R.University Of Cambridge,Institut d 'Astrophysique de Paris (author)
  • Harris, A. I.University of Maryland (author)
  • Ismail, D.Centre National d'Etudes Spatiales (CNES) (author)
  • Ivison, R. J.European Southern Observatory (ESO) (author)
  • Jones, B. M.University of Manchester (author)
  • Krips, M.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Lehnert, M.École Normale Supérieure de Lyon (author)
  • Marchetti, L.Istituto nazionale di astrofisica (INAF),University of Cape Town (author)
  • Messias, H.European Southern Observatory Santiago,Atacama Large Millimeter-submillimeter Array (ALMA) (author)
  • Negrello, M.Cardiff University (author)
  • Neri, R.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Omont, A.A.Institut d 'Astrophysique de Paris (author)
  • Perez-Fournon, I.Instituto de Astrofísica de Canarias,Universidad del Pais Vasco / Euskal Herriko Unibertsitatea,University of the Basque Country (UPV/EHU) (author)
  • Nanni, A.Istituto nazionale di astrofisica (INAF) (author)
  • Chartab, N.University of California,Carnegie Observatories,Universiteit Leiden (UL),Leiden University (UL) (author)
  • Serjeant, S.Open University (author)
  • Stanley, F.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Tamura, Y.Nagoya University (author)
  • Urquhart, S.Open University (author)
  • Vlahakis, C.National Radio Astronomy Observatory (author)
  • Weiß, A.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Young, A. J.Rutgers University (author)
  • Chalmers tekniska högskolaNagoya University (creator_code:org_t)

Related titles

  • In:Monthly Notices of the Royal Astronomical Society530:4, s. 4578-45960035-87111365-2966

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