Spiral galaxies in clusters. V - Radial gradients in Coma and A1367

Details Spiral galaxies in clusters. V - Radial gradients in Coma and A1367 Spiral galaxies in clusters. V - Radial gradients in Coma and A1367

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89..466b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 89, April 1984, p. 466-474.

Astronomy and Astrophysics

Astronomy

26

Abundance, Astronomical Spectroscopy, Galactic Clusters, Hydrogen, Interstellar Gas, Spiral Galaxies, Visible Spectrum, Cosmic Gases, Luminosity, Radiant Flux Density, Ubv Spectra

Scientific paper

The authors present the results of an extensive H I and optical survey of 80 spiral galaxies located within three degrees of the centers of the Coma (A1656) and A1367 clusters of galaxies. In Coma they observe a strong gradient in H I content. Spirals that are located within a radius of one degree from the cluster center are severely depleted in H I with respect to the outer spirals. Corresponding gradients in either color or luminosity are not present although many of the inner, H I poor spirals are quite blue, which suggests that any gas removal process has acted quite recently. A1367 also exhibits a gradient in H I content, but of a different nature; very H I poor spirals are found in the inner regions, but they are able to coexist there with H I rich galaxies. On the basis of the available evidence the authors conclude that a global sweeping mechanism operates in the inner regions of Coma. In the case of A1367, however, any sweeping mechanism, if present, has been highly selective.

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