Structural similarities among nearby giant H II regions

Details Structural similarities among nearby giant H II regions Structural similarities among nearby giant H II regions

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90...80h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, Jan. 1985, p. 80-87.

Astronomy and Astrophysics

Astronomy

36

Extragalactic Radio Sources, Galactic Structure, H Ii Regions, Star Distribution, Stellar Evolution, H Alpha Line, Interstellar Gas, Morphology, Spectrophotometry, Spiral Galaxies

Scientific paper

The authors discuss the similarities in morphology and stellar content of a number of giant H II regions in several nearby late-type spiral and irregular galaxies. These are suggestive of parallel evolutionary developments in very large star-forming complexes which are located in gas-rich galaxies. The similarities between regions in galaxies with different global galactic properties, e.g., the presence of spiral arms, implies that star formation is primarily a local process which is independent of the mechanism responsible for initiating the star-formation process. The characteristics of individual giant H II complexes are found to be most consistent with sustained formation of relatively normal OB stars over time periods of at least several million years.

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