Searching for the optimal means of comparative H I analysis

Details Searching for the optimal means of comparative H I analysis Searching for the optimal means of comparative H I analysis

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277..532b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 277, Feb. 15, 1984, p. 532-541.

Astronomy and Astrophysics

Astronomy

25

Galactic Structure, H Lines, Hydrogen Clouds, Spiral Galaxies, Centimeter Waves, Color, Infrared Radiation, Luminosity, Radio Sources (Astronomy)

Scientific paper

A sample of 93 spiral galaxies that have blue and IR photometry and H I measurements has been compiled to demonstrate that the use of infrared instead of blue magnitudes in comparing and normalizing galaxian properties leads to improved correlations among these properties. It is shown that the use of (B-H)-0.5 as a color index and LH-0.5 as a luminosity indicator significantly reduces the scatter in the color-gas content relation and improves the dependence of gas content on luminosity. Moreover, the parameters morphological type, absolute infrared luminosity, and H I content are all intercorrelated. H I content still does not tightly correlate with any other single parameter.

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