Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.197...19m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 197, Oct. 1981, p. 19-30.
Astronomy and Astrophysics
Astronomy
16
Celestial Mechanics, Interstellar Matter, Magellanic Clouds, Stellar Envelopes, Supergiant Stars, Astronomical Photography, B Stars, Blue Stars, O Stars, Oxygen, Radial Velocity, Wolf-Rayet Stars
Scientific paper
The dynamics and structure of N59A (DEM 241) have been investigated with the Anglo-Australian telescope and SCR Schmidt camera. This complex, giant LMC shell is 40 pc in diameter and contains nine O and B supergiant or WR stars which give rise to the intense UV source detected by Page and Carruthers (1978). Its radio continuum emission is distinctly thermal with alpha equal to 0.0 for the source MC64. Profiles of the forbidden O II (3726 and 3729 A) lines have been taken over the shell and a very deep Schmidt photograph has been obtained in the forbidden S II (6731 and 6716 A) line. The presence of many velocity components, over a velocity range of 100 km/s, and its complex filamentary structure suggest that its structure and motion are much more complex than those of a single spherical shell which is expanding radially. Alternative configurations are proposed.
Blades Chris J.
Meaburn John
Terrett David L.
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