Large-scale motions within the Orion Nebula (M 42)

Details Large-scale motions within the Orion Nebula (M 42) Large-scale motions within the Orion Nebula (M 42)

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...137..245g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 137, no. 2, Aug. 1984, p. 245-249.

Astronomy and Astrophysics

Astrophysics

7

Gas Dynamics, Ionized Gases, Molecular Clouds, Orion Nebula, Astronomical Spectroscopy, Hydrogen Clouds, Visible Spectrum

Scientific paper

Two separate sets of profiles of some visible emission lines over the whole 1° area of M42 have been obtained with Fabry-Pérot monochromators on the 1.9-m Kottamia and 1.23-m Calar Alto telescopes. Many large-scale, separate velocity components have been found and related to the underlying molecular cloud and filamentary structure of the ionized gas. It is difficult to explain these within a simple model of a radially expanding shell. Various alternatives are considered.

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