Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...369l..75h&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 369, March 10, 1991, p. L75-L78. Research supported by California
Astronomy and Astrophysics
Astrophysics
36
Gas Ionization, H Ii Regions, Herbig-Haro Objects, Orion Nebula, Star Formation, Forbidden Transitions, Hubble Space Telescope, Oxygen Spectra, Sulfur
Scientific paper
Initial results are presented from images of the Orion Nebula obtained with the HST Wide-Field Camera with a resolution of better than about 10 to the 15th cm. The morphology of the forbidden S II emission is markedly different from that seen in H-beta and forbidden O II. The forbidden S II is dominated by filamentary features with widths between 0.1 and 1 arcsesc which sharply highlight ionization fronts moving into dense neutral material. While the surfaces into which these fronts are moving are textured, subarcsec clumps with high density contrast are uncommon. The fields contains a number of HH objects whose structure is revealed by the HST, and which are described.
Campbell Bel
Code Arthur
Currie Douglas G.
Danielson Edward G.
Ewald Shawn P.
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