Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Dokumenter

  • pdf

    438 KB, PDF-dokument

  • Rajib Ganguly
  • Michael S. Brotherton
  • Nahum Arav
  • Sara R. Heap
  • Lutz Wisotzki
  • Thomas L. Aldcroft
  • Danielle Alloin
  • Ehud Behar
  • Gabriela Canalizo
  • D. Michael Crenshaw
  • Martijn de Kool
  • Kenneth Chambers
  • Gerald Cecil
  • Eleni Chatzichristou
  • John Everett
  • Jack Gabel
  • C. Martin Gaskell
  • Emmanuel Galliano
  • Richard F. Green
  • Patrick B. Hall
  • Dean C. Hines
  • Vesa T. Junkkarinen
  • Jelle S. Kaastra
  • Mary Elizabeth Kaiser
  • Demosthenes Kazanas
  • Arieh Konigl
  • Kirk T. Korista
  • Gerard A. Kriss
  • Ari Laor
  • Karen M. Leighly
  • Smita Mathur
  • Patrick Ogle
  • Daniel Proga
  • Bassem Sabra
  • Ran Sivron
  • Stephanie Snedden
  • Randal Telfer
We present low-resolution ultraviolet spectra of 14 low redshift (z zz 1.4 Large Bright Quasar samples. By design, our objects sample luminosities in between these two surveys, and our four absorbed objects are consistent with the v ~ L^0.62 relation derived by Laor & Brandt (2002). Another quasar, HE0441-2826, contains extremely weak emission lines and our spectrum is consistent with a simple power-law continuum. The quasar is radio-loud, but has a steep spectral index and a lobe-dominated morphology, which argues against it being a blazar. The unusual spectrum of this quasar resembles the spectra of the quasars PG1407+265, SDSSJ1136+0242, and PKS1004+13 for which several possible explanations have been entertained.
OriginalsprogEngelsk
Artikelnummer479
TidsskriftAstrophysical Journal
Vol/bind133
Udgave nummer2
ISSN0004-637X
DOI
StatusUdgivet - 8 jan. 2007

Antal downloads er baseret på statistik fra Google Scholar og www.ku.dk


Ingen data tilgængelig

ID: 123372113