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The Extent of The HI Halo in Five Isolated SB Galaxies

Published online by Cambridge University Press:  12 April 2016

H. Kristen  and
S. Jörsäter
H. Kristen
Affiliation:
Stockholm Observatory S-13336 Saltsjöbaden, Sweden
S. Jörsäter
Affiliation:
Stockholm Observatory S-13336 Saltsjöbaden, Sweden

Abstract

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We investigate the extent of the HI halo in five isolated SB galaxies featuring strong bars. VLA1 observations of these objects are used to determine the diameter ratio between the HI and the optical distribution. The mean diameter ratios D1.82/D(0) and DHI/D(0), for the sample presented here, are 1.1±0.1 and 1.2±0.1 respectively (1σ r.m.s.). For samples of various types, Bosma (1981) and Broeils (1992) find D1.82/D(0) = 2.2±1.1 and DHI/D(0) = 1.8±0.4 respectively. Our result thus could indicate compactness of the HI halo in galaxies with strong bars.

Type
Posters for Part III and Part IV
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 236 - 238
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

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