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The Declining Rotation Curve of NGC 157

Published online by Cambridge University Press:  05 March 2013

Stuart D. Ryder ,
A. Zasov ,
V. McIntyre  and
W. Walsh
Stuart D. Ryder*
Affiliation:
School of Physics, University of New South Wales, Sydney 2052, Australia
A. Zasov
Affiliation:
Sternberg Astronomical Institute, Moscow State University, Universitetskij Prospect 13, 119899 Moscow, Russia
V. McIntyre
Affiliation:
Department of Physics, University of Wollongong, Northfields Ave, NSW 2522, Australia
W. Walsh
Affiliation:
School of Physics, University of New South Wales, Sydney 2052, Australia Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia
*
1[email protected]
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Abstract

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We have found strong evidence for an abrupt decline in the HI rotation curve of the isolated spiral galaxy NGC 157. Various mass models to account for this, and the implications for the dark matter content of NGC 157, are discussed.

Keywords

galaxies: individual (NGC 157)galaxies: kinematics and dynamicsgalaxies: spiralradio lines: galaxies
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 14 , Issue 1 , 1997 , pp. 85 - 88
Copyright
Copyright © Astronomical Society of Australia 1997

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