Velocity dispersions in giant H II regions - Relation with their linear diameters

Details Velocity dispersions in giant H II regions - Relation with their linear diameters Velocity dispersions in giant H II regions - Relation with their linear diameters

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213...15m&link_type=abstract

Astrophysical Journal, Part 1, vol. 213, Apr. 1, 1977, p. 15-17.

Astronomy and Astrophysics

Astrophysics

80

Galactic Clusters, H Alpha Line, H Ii Regions, Line Shape, Nebulae, Spiral Galaxies, Cosmology, Curve Fitting, Emission Spectra, Fabry-Perot Interferometers, Hydrogen Ions, Least Squares Method, Velocity Measurement

Scientific paper

The existence of a narrow correlation between the linear diameters of giant H II regions in late-type spiral galaxies and the width of their global H-alpha emission is demonstrated by means of line profiles determined using interferometric techniques. The relation (diameter-line width) established in members of the Local and M81-NGC 2403 groups is applied to a redetermination of the distance to M101.

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