First "winged" and X-shaped radio source candidates. II. New redshifts

C. C. Cheung, Stephen E. Healey, Hermine Landt, Gijs Verdoes Kleijn, Andrés Jordán

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

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
StatePublished - 2009
Externally publishedYes

Keywords

  • Galaxies: active
  • Galaxies: distances and redshifts
  • Quasars: general

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