Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.252..111e&link_type=abstract
Nature, vol. 252, Nov. 8, 1974, p. 111-113.
Astronomy and Astrophysics
Astrophysics
111
Coronas, Galactic Structure, Interstellar Gas, Mass Distribution, Missing Mass (Astrophysics), Andromeda Galaxy, Elliptical Galaxies, Galactic Evolution, Luminosity, Milky Way Galaxy, Spatial Distribution, Spiral Galaxies
Scientific paper
A study of the hidden matter concentrated around massive galaxies used data collected from the companions of our galaxy and of three external spiral galaxies. A graph of the joint distribution of the companions of all four galaxies showed a line of segregation between regions populated by elliptical and non-elliptical companions. The segregation of companion galaxies was connected to the presence or absence of interstellar gas in the companion. It was shown that the segregation mechanism does not reduce the tidal interaction which is too weak to produce radial effects. The observations made suggest that intergalactic gas is not randomly distributed between galaxies but is concentrated around massive galaxies, forming their coronas.
Chernin Arthur D.
Einasto Jaan
Kaasik A. A.
Saar Enn
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