The Structure of the Dense Cores of H II Regions

Details The Structure of the Dense Cores of H II Regions The Structure of the Dense Cores of H II Regions

May 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..28...61d&link_type=abstract

Astrophysics and Space Science, Volume 28, Issue 1, pp.61-90

Astronomy and Astrophysics

Astrophysics

35

Scientific paper

The latest observational and theoretical evidence which suggests the existence of a large number of partially ionized globules (PIG's) in the cores of H ii regions is presented. The consequences of this proposition to the structure of the Orion Nebula are then considered. It is suggested that the dense ionized core of M42 is caused by two major ionization fronts eating into a large mass of neutral material which contains many dense neutral globules. The ‘Hourglass’ in M8 is shown to be very similar.

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