Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Spectroscopic confirmation of an ultramassive and compact galaxy at Z = 3.35: A detailed look at an early progenitor of local giant ellipticals

    Access Status
    Fulltext not available
    Authors
    Marsan, Z.
    Marchesini, D.
    Brammer, G.
    Stefanon, M.
    Muzzin, A.
    Fernández-Soto, A.
    Geier, S.
    Hainline, K.
    Intema, Hubertus
    Karim, A.
    Labbé, I.
    Toft, S.
    Dokkum, P.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Marsan, Z. and Marchesini, D. and Brammer, G. and Stefanon, M. and Muzzin, A. and Fernández-Soto, A. and Geier, S. et al. 2015. Spectroscopic confirmation of an ultramassive and compact galaxy at Z = 3.35: A detailed look at an early progenitor of local giant ellipticals. Astrophysical Journal. 801 (2): Article ID 133.
    Source Title
    Astrophysical Journal
    DOI
    10.1088/0004-637X/801/2/133
    ISSN
    0004-637X
    URI
    http://hdl.handle.net/20.500.11937/73888
    Collection
    • Curtin Research Publications
    Abstract

    We present the first spectroscopic confirmation of an ultramassive galaxy at redshift z > 3 using data from Keck- NIRSPEC, VLT-X-shooter, and GTC-Osiris. We detect strong [O III] and Lya emission, and weak [O II], C IV, and He II, placing C1-23152 at a spectroscopic redshift of zspec = 3.351. The modeling of the emission-line-corrected spectral energy distribution (SED) results in a best-fit stellar mass of M* = 3.1-0.7+0.6 × 1011 M?, a star formation rate of <7 M?yr-1, and negligible dust extinction. The stars appear to have formed in a short intense burst ~300-500 Myr prior to the observation epoch, setting the formation redshift of this galaxy at z ~ 4.1. From the analysis of the line ratios and widths and the observed flux at 24 µm, we confirm the presence of a luminous hidden active galactic nucleus (AGN), with bolometric luminosity of ~1046 erg s-1. Potential contamination of the observed SED from the AGN continuum is constrained, placing a lower limit on the stellar mass of 2 × 1011 M?. HST/WFC3 H160 and ACS I814 images are modeled, resulting in an effective radius of re ~ 1 kpc in the H160 band and a -Sti-errsic index n ~ 4.4. This object may be a prototype of the progenitors of local most massive elliptical galaxies in the first 2 Gyr of cosmic history, having formed most of its stars at z > 4 in a highly dissipative, intense, and short burst of star formation. C1-23152 is completing its transition to a post-starburst phase while hosting a powerful AGN, potentially responsible for the quenching of the star formation activity.

    Related items

    Showing items related by title, author, creator and subject.

    • Extra-nuclear starbursts: Young luminous hinge clumps in interacting galaxies
      Smith, B.; Soria, Roberto; Struck, C.; Giroux, M.; Swartz, D.; Yukita, M. (2014)
      Hinge clumps are luminous knots of star formation near the base of tidal features in some interacting galaxies. We use archival Hubble Space Telescope (HST) UV/optical/IR images and Chandra X-ray maps along with Galaxy ...
    • Ultraluminous star-forming galaxies and extremely luminous warm molecular hydrogen emission at z = 2.16 in the PKS1138-26 radio galaxy protocluster
      Ogle, P.; Davies, J.; Appleton, P.; Bertincourt, B.; Seymour, Nick; Helou, G. (2012)
      A deep Spitzer Infrared Spectrograph map of the PKS 1138–26 galaxy protocluster reveals ultraluminous polycyclic aromatic hydrocarbon (PAH) emission from obscured star formation in three protocluster galaxies, including ...
    • Herschel reveals the obscured star formation in HiZELS Ha emitters at z = 1.47
      Ibar, E.; Sobral, D.; Best, P.; Ivison, R.; Smail, I.; Arumugam, V.; Berta, S.; Béthermin, M.; Bock, J.; Cava, A.; Conley, A.; Farrah, D.; Geach, J.; Ikarashi, S.; Kohno, K.; Le Floc'h, E.; Lutz, D.; Magdis, G.; Magnelli, B.; Marsden, G.; Oliver, S.; Page, M.; Pozzi, F.; Riguccini, L.; Schulz, B.; Seymour, Nick; Smith, A.; Symeonidis, M.; Wang, L.; Wardlow, J.; Zemcov, M. (2013)
      We describe the far-infrared (far-IR; rest-frame 8–1000-μm) properties of a sample of 443 Hα-selected star-forming galaxies in the Cosmic Evolution Survey (COSMOS) and Ultra Deep Survey (UDS) fields detected by the ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.