The MURALES survey. V. Jet-induced star formation in 3C 277.3 (Coma A)
  We present observations obtained with the VLT/MUSE optical integral field
spectrograph of the radio source 3C277.3, located at a redshift of 0.085 and
associated with the galaxy Coma A. An emission line region fully enshrouds the
double-lobed radio source, which is ~60 kpc x 90 kpc in size. Based on the
emission line ratios, we identified five compact knots in which the gas
ionization is powered by young stars located as far as ~60 kpc from the host.
The emission line filaments surrounding the radio emission are compatible with
ionization from fast shocks (with a velocity of 350-500 km/s), but a
contribution from star formation occurring at the edges of the radio source is
likely. Coma A might be a unique example in the local Universe in which the
expanding outflow triggers star formation throughout the whole radio source.
