3C 386

B1836+171

Basic Data
S178 Alpha FR Class ID Spectrum Best z mag. LAS lg P178 D
26.10.59IRD Gal0.0170V = 12.93 292.0024.06 93.4

Image:


Size: 384.0 × 384.0 arcsec²
LUT: Linear
Beam: 5.8 arcsec
Frequency: 1477 MHz
Method: VTESS ՘>5.8
Telescope: VLA B+C
Credits: Leahy & Perley (1991)

Early studies of 3C 386 were considerably confused by its apparently zero redshift (Schmidt 1965), which, combined with the relaxed structure led to the suggestion that this might be an object in our Galaxy such as a supernova remnant (Mackay 1969); it is relatively close to the galactic plane (latitude 11°). The mystery was solved when Lynds (1971) showed that there is an F7 star on the line of sight to the galaxy; the zero redshift belonged to the star.

Lynds also pointed to the similarity between the diffuse structure of 3C 386 and other objects such as 3C 315. These objects are now known as relaxed doubles. 3C 386 is a typical example: its lobes contain considerable fine structure including curved filaments near the edges that may be parts of loops or shells.

The compact source to the west, and a fainter one just visible to the north west, are unrelated background objects.


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