Kinematics of the supernova remnant S147

Details Kinematics of the supernova remnant S147 Kinematics of the supernova remnant S147

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229..147k&link_type=abstract

Astrophysical Journal, Part 1, vol. 229, Apr. 1, 1979, p. 147-152.

Astronomy and Astrophysics

Astrophysics

24

Astronomical Spectroscopy, Interstellar Matter, Nebulae, Supernova Remnants, Emission Spectra, Filaments, H Lines, Kinematics, Oxygen Spectra, Radial Velocity

Scientific paper

Slit spectra have been obtained at 15 locations on the supernova remnant S147. They indicate a systematic expansion velocity of about 80 km/s. Substitution in a theoretical model gives a radius of 17 pc and a distance of 600 pc. Comparison of the appearance of emission features with radial velocities suggests that in S147 the sharp filaments are ropelike structures rather than sheets viewed edge-on. In accord with this view, the sharp features show high densities, as measured by the doublet. Finally, it is observed that the high-density regions do not have lower radial velocities than the low density regions. This is contrary to expectation if the observed filaments arise from the passage of a shock through interstellar density fluctuations.

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