An empirical model for the structure of the Orion nebula

Details An empirical model for the structure of the Orion nebula An empirical model for the structure of the Orion nebula

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974hrgc.conf..135b&link_type=abstract

H II regions and the galactic centre : proceedings of the Eighth ESLAB Symposium, 4-7 June 1974, Frascati, Italy, p. 135-143 (SE

Astronomy and Astrophysics

Astronomy

3

Astronomical Models, Galactic Structure, Nebulae, Orion Constellation, Astronomical Photography, Hydrogen Clouds, Ionized Gases, Radio Astronomy, Stellar Radiation

Scientific paper

An empirical model of the Orion nebula is proposed whereby a high-density core of ionized gas surrounding the exciting star theta 1 C is partially imbedded on the near side of a massive neutral complex. Radiation from theta 1 C continually ionizes the dense neutral gas, and a network of flows from behind the star and from the north and east result; these resupply high density gas to the core. The gas freely expands in the other directions where possible through fragments of the original neutral complex producing an extended region of tenuous, swirling nebulosity. It is shown that such a model can explain the large amount of information pertaining to the spatial and kinematic structure of this nebula.

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