Very red, yet H I rich galaxies

Details Very red, yet H I rich galaxies Very red, yet H I rich galaxies

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..577s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, May 1983, p. 577-582.

Astronomy and Astrophysics

Astronomy

32

Disk Galaxies, Galactic Evolution, Neutral Gases, Spiral Galaxies, Hydrogen Atoms, Interstellar Extinction

Scientific paper

The authors present a small sample of luminous cluster spirals that have high neutral hydrogen content and yet very red integrated colors. The mean 20% H I velocity width of these galaxies is ≅490 ± 20 km s-1. Therefore, rotational velocities in the disk are generally high. In the most puzzling cases, some of these spirals have integrated colors that are indistinguishable from those for elliptical and S0 galaxies despite having ≅ 1×1010 solar masses of H I. These characteristics suggest that star formation in luminous disk galaxies may not always be a continuous process.

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