FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts

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

doi:10.1088/0067-0049/181/2/548

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arXiv · 0811.3942

FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts

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

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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 Paper I (Cheung 2007). A total of 27 redshifts were successfully obtained, 21 of which are new, including that of a newly identified candidate source of this type which is presented here. With these observations, the sample of candidates from Paper I 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.

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C. C. Cheung, Stephen E. Healey, Hermine Landt, Gijs Verdoes Kleijn, Andrés Jordán. 2008-12-31. FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts. https://doi.org/10.1088/0067-0049/181/2/548

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