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A comparison of dynamical models of the Andromeda Nebula and the Galaxy

Published online by Cambridge University Press:  14 August 2015

V. C. Rubin  and
W. K. Ford Jr.
V. C. Rubin
Affiliation:
Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, D.C., U.S.A.
W. K. Ford Jr.
Affiliation:
Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, D.C., U.S.A.

Abstract

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(1) From new radial velocities of 67 H II regions in M 31, rotational velocities and a mass model of M 31 are derived, and compared with the rotation curve and Schmidt mass model of our galaxy. (2) It is shown that in M 31 the distribution of H II regions as identified by Baade agrees with the distribution of neutral hydrogen determined from 21-cm observations. Also, the rotation curve derived from the H II velocities outside of the nucleus is similar to the rotation curve derived from 21-cm H I observations.

Type
Part I/Spiral Structure in Galaxies
Information
Symposium - International Astronomical Union , Volume 38: The Spiral Structure of our Galaxy , 1970 , pp. 61 - 68
Copyright
Copyright © Reidel 1970 

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