Expanding shells in the filamentary edge of the young supernova remnant RCW 103

Details Expanding shells in the filamentary edge of the young supernova remnant RCW 103 Expanding shells in the filamentary edge of the young supernova remnant RCW 103

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.222..593m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 222, Oct. 1, 1986, p. 593-603.

Other

14

Stellar Envelopes, Stellar Evolution, Stellar Mass Ejection, Stellar Spectrophotometry, Supernova Remnants, Bow Waves, H Alpha Line, Shock Waves, Velocity Distribution

Scientific paper

Long-slit, echelle spectrograms have been obtained of the Hα and [N II] lines over the young supernova remnant RCW 103. One notable velocity feature is a narrow velocity spike (≅20 km s-1 wide) with VHEL ≅ -44 km s-1 which is near the mean for the whole nebula. The overall velocity curves fail to match those expected from a remnant expanding radially at 1100 - 3000 km s-1 as suggested by previous observations. Along the filamentary edge of the SNR several regions of ⪉0.4 pc diameter are found which are expanding with velocities of up to 300 km s-1; these are explained in terms of a model involving bow shocks formed when the supernova blast-wave overruns pre-existing condensations. Other mechanisms are also suggested.

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