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Fig. 1


Left: MCSNR candidate J0056−7209 on a composite MCELS image (R, G, B = [S II], Hα, and [O III], respectively). On the east and west side of the ellipse, fragmented filaments typical of older supernova remnants are clearly seen. The white bar shows the position of the WiFeS spectrograph slit. The spectrograph slit is actually a combination of 25 × 1′′ wide adjacent slits each, repeated 36 times to yield an effective 25 × 36′′ field of view on the sky. Right: same as left for MCSNR candidate J0109–7318. Compared with J0056−7209, this one exhibits more fragmented filaments creating [S II] and Hα arcs also common in morphological structures of old supernova remnants.

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