Deep optical study of the mixed-morphology supernova remnant G 132.7+1.3 (HB3)

P. Boumis, A. Chiotellis, V. Fragkou +8

We present optical ccd images of the large supernova remnant (SNR) G132.7$+$1.3 (HB3) covering its full extent for the first time, in the emission lines of H$\alpha +$[N II], [S II] and…