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An HI Study of Two Barred Spiral Galaxies

Published online by Cambridge University Press:  12 April 2016

E. M. Moore  and
S. T. Gottesman
E. M. Moore
Affiliation:
Department of Astronomy, Boston University, Boston, MA 02215
S. T. Gottesman
Affiliation:
Department of Astronomy, University of Florida, Gainesville, FL 32611

Extract

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We have made HI observations of an early type, NGC 1398 (SBab(r)I), and a late type barred system, NGC 3319 (SBc(s)II.4). NGC 1398 is a beautifully symmetric galaxy with a bright stellar bulge, bar and inner ring and tightly wound spiral arms (also classified as an R1 double outer pseudoring). In HI the spiral structure is strong but the center shows a sharp depletion. In contrast, NGC 3319 has an asymmetric appearance and irregular spiral structure. It is rich in its central HI with a gas bar and spiral arms, both of which are highlighted by prominent HII regions. We attempt to determine the pattern speeds of the galaxies and to explore the differences between early and late type systems.

Type
Posters of Part VII and Part VIII
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 498 - 500
Copyright
Copyright © Astronomical Society of the Pacific 1996

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