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Comparison of Global 21 cm Velocity Profiles with Hα Rotation Curves

Published online by Cambridge University Press:  04 August 2017

Norbert Thonnard
Norbert Thonnard*
Affiliation:
Department of Terrestrial Magnetism, Carnegie Institution of Washington

Abstract

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21 cm profiles are compared with high resolution long slit Hα spectra. Asymmetries in intensity and velocity gradient in the spectra are apparent in the global profiles. When measured at 0.5 of peak intensity, the 21cm profile width and optical rotation curve match best.

Type
I. Kinematics of Gas and the Underlying Mass Distribution
Information
Symposium - International Astronomical Union , Volume 100: Internal Kinematics and Dynamics of Galaxies , 1983 , pp. 29 - 30
Copyright
Copyright © Reidel 1983 

References

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