
TY  - JOUR
A1  - Safouris, V. 
A1  - Hunstead, R. W. 
A1  - Prouton, O. R. 
T1  - The Extraordinary Radio Galaxy MRC B1221&#8211;423
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 2003
VL  - 20
IS  - 1
SP  - 1
EP  - 5
KW  - Keywords: galaxies: active &#8212; galaxies: interactions &#8212; galaxies: individual (B1221&#8211;423)
UR  - https://doi.org/10.1071/AS02029 
N2  - MRC B1221&#8211;423 is a compact steep spectrum (CSS) radio source in the core of a remarkable elliptical galaxy. We examine its environment with long-slit spectra and multicolour images. A high-resolution synthesis image shows the radio source to have a 1&#180;&#180;.5 (5.7&#32;kpc) double structure. We use the empirical relationship between jet kinetic power and narrow line luminosity to infer a source age of &#126;105&#32;yr. The z&#32;=&#32;0.1706 host galaxy is clearly disturbed, with tidal features and shells providing plausible evidence for a merger with one or more close companions. This evidence leads us to conclude that B1221&#8211;423 may be the progenitor of a much larger source, caught at an early stage in its radio evolution. We speculate that it is the interaction and accompanying events which have triggered this young powerful radio source. 
ER  -

