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Radial distributions of some constituents in M31, the galaxy and M33

Published online by Cambridge University Press:  14 August 2015

Elly M. Berkhuijsen
Elly M. Berkhuijsen*
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, F.R.G.

Extract

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The Figure shows the distributions perpendicular to the planes of the galaxies of: (a) the surface density of HI, σHI(R), (b) the surface density of HII regions, σHII(R), and (c) the radio brightness temperature, σTB(R). Details may be found in Berkhuijsen (A.A. 57, 9, 1977; Proc. IAU Symp. 77, 1978); here σHI(R) of the Galaxy was taken from Gordon and Burton (Ap. J. 208, 346, 1976) and σTB(R) of M31 has been revised. Distances to the centre are scaled with the Holmberg radius RH (21, 15 and 7.8 kpc for M31, Galaxy, M33).

Type
VII. COMPARISONS OF OUR GALAXY WITH OTHER GALAXIES
Information
Symposium - International Astronomical Union , Volume 84: The Large-Scale Characteristics of the Galaxy , 1979 , pp. 427
Copyright
Copyright © Reidel 1979