4C 14.27

B0832+143

Basic Data
S178 Alpha FR Class ID Spectrum Best z mag. LAS lg P178 D
11.21.15IIR+HB Gal0.392V = 19.5* 38.9026.51 165.1

Image:


Size: 76.8 × 76.8 arcsec²
LUT: Linear
Beam: 1.25 arcsec
Frequency: 1477 MHz
Method: CLEAN ՘>1.25
Telescope: VLA A
Credits: Leahy & Perley (1991)

4C 14.27 is notable for its very steep spectrum and lack of a compact radio core: in our image a red cross marks the position of the optical galaxy. The brightness enhancement ("warm spot") at the end of the shorter east lobe is too low-contrast to qualify as a hotspot, so that lobe is classified as "relaxed". All these symptoms suggest that the central engine has temporarily switched off jet production, although strong emission lines are still being produced by the AGN (Jackson & Rawlings 1997)

4C 14.27 was added to the 3CRR sample by Laing, Riley & Longair (1983) as its flux in the more accurate 4CT survey was high enough that it should have been included in 3CR. Mostly likely it was omitted simple due to random errors in 3CR as it is very close to the minimum flux density for inclusion.


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Page created: 2009 Apr 2 14:16:43
J. P. Leahy
jpl@jb.man.ac.uk