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 language | English |
|---|---|
| Pages (from-to) | 548-556 |
| Number of pages | 9 |
| Journal | Astrophysical journal supplement series |
| Volume | 181 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 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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X-shaped radio sources. II. New redshifts
Cheung, C. C. (Contributor), Healey, S. E. (Contributor), Landt, H. (Contributor), Verdoes Kleijn, G. (Contributor) & Jordán, A. (Contributor), Strasbourg Astronomical Data Center, 31-Dec-2009
DOI: 10.26093/cds/vizier.21810548, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/181/548
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