The dynamics of two giant interstellar shells in the LMC

Details The dynamics of two giant interstellar shells in the LMC The dynamics of two giant interstellar shells in the LMC

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..403m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 190, Feb. 1980, p. 403-412.

Astronomy and Astrophysics

Astronomy

29

Interstellar Matter, Magellanic Clouds, Magnetohydrodynamic Flow, Nebulae, Stellar Envelopes, Calcium, Emission Spectra, Neutral Gases, Radial Velocity, Sodium, Supernovae

Scientific paper

The motions of the neutral and ionized gas associated with two nebular shells within the LMC have been investigated by observing the profiles of the Na I and Ca II interstellar absorption lines in a central star, and those of the O II forbidden emission lines over the nebulae. Up to seven components over a range of heliocentric radial velocities from 260 to 340 km/s were discovered. Stellar winds and supernova explosions are both considered as possible mechanisms for the formation of these shells, but many features of the trends in radial velocity over their surfaces are not easily explained by these mechanisms.

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