Bow-shocks and possible jet-shell interaction in the planetary nebula M 2-48

Details Bow-shocks and possible jet-shell interaction in the planetary nebula M 2-48 Bow-shocks and possible jet-shell interaction in the planetary nebula M 2-48

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...357.1031v&link_type=abstract

Astronomy and Astrophysics, v.357, p.1031-1034 (2000)

Astronomy and Astrophysics

Astrophysics

13

Ism: Jets And Outflows, Ism: Planetary Nebulae: Individual: M 2-48

Scientific paper

Deep narrow band CCD images in the Hα , [O Iii] lambda5007 Ä, [N Ii] lambda6584 Ä, and [S Ii] lambda6717 +31 Ä emission lines have been obtained for the planetary nebula M 2-48. The discovery of a pair of symmetric low-excitation bow-shocks, separated by 4', and forming a highly collimated bipolar outflow, is presented. The bow-shocks are emitting in [O Iii] and present the ionization structure expected from working surfaces of collimated jets, pointing out that these structures are tracing regions with shocked gas at high velocities (>100 km s-1). In addition, an internal bipolar outflow (60''x30'') and an apparent off-center semi-circular shell (size ~110'') are also detected. An enhancement of low-excitation line emission is observed in the shell along the outflow axis. This result can be interpreted in terms of a jet-shell interaction.

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