FIRST “Winged” And X-Shaped radio source candidates II. NEW REDSHIFTS: New redshifts

C. C. Cheung*, Stephen E. Healey, Hermine Landt, Gijs Verdoes Kleijn, Andres Jordan

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)

Abstract

We report optical spectroscopic observations of X-shaped radio sources with the Hobby-Eberly Telescope and Multiple-Mirror Telescope, focused on the sample of candidates from the FIRST survey presented in a previous paper. A total of 27 redshifts were successfully obtained, 21 of which are new, including a newly identified candidate source of this type which is presented here. With these observations, the sample of candidates from the previous paper is over 50% spectroscopically identified. Two new broad emission-lined X-shaped radio sources are revealed, while no emission lines were detected in about one-third of the observed sources; a detailed study of the line properties is deferred to a future paper. Finally, to explore their relation to the Fanaroff Riley division, the radio luminosities and host galaxy absolute magnitudes of a spectroscopically identified sample of 50 X-shaped radio galaxies are calculated to determine their placement in the Owen-Ledlow plane.

Original languageEnglish
Pages (from-to)548-556
Number of pages9
JournalAstrophysical journal supplement series
Volume181
Issue number2
DOIs
Publication statusPublished - Apr-2009

Keywords

  • galaxies: active
  • galaxies: distances and redshifts
  • quasars: general
  • BL LACERTAE OBJECTS
  • REVISED 3C CATALOG
  • ABELL CLUSTERS
  • BLACK-HOLE
  • OPTICAL SPECTROSCOPY
  • SURFACE PHOTOMETRY
  • GALAXY NGC-326
  • SKY SURVEY
  • VLA SURVEY
  • EMISSION

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