H I observations of active and interacting galaxies

Details H I observations of active and interacting galaxies H I observations of active and interacting galaxies

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....75...19b&link_type=abstract

Astronomy and Astrophysics, vol. 75, no. 1-2, May 1979, p. 19-25. Research supported by the National Research Council of Canada

Astronomy and Astrophysics

Astrophysics

33

Galactic Structure, H Lines, Interacting Galaxies, Radio Bursts, Seyfert Galaxies, Circular Polarization, Graphs (Charts), Intergalactic Media, Markarian Galaxies, Radiant Flux Density, Radio Emission, Stellar Spectrophotometry

Scientific paper

Observations were made of active and interacting galaxies, mainly drawn from Markarian's lists, in the H I 21 cm line with the Arecibo telescope. It is found that Markarians all have high M(H I)/L(B) ratios corresponding to Sc-galaxies. The six observed Seyfert galaxies have a spread in M(H I)/L(B) similar to spiral galaxies in general (counting also MRK 348 from Bieging and Biermann, 1977). Some interacting galaxies have H I profiles with very extended wings; high sensitivity and a straight baseline is required to detect more such wings. Using earlier model calculations for galaxies (Biermann, 1976; Biermann and Fricke, 1977), it is shown that Markarian galaxies have enough gas to sustain several strong bursts of star formation without seriously depleting their gas.

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