
TY  - JOUR
A1  - Nulsen, PEJ 
T1  - Gas and Galaxy Formation
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 1999
VL  - 16
IS  - 1
SP  - 3
EP  - 7
KW  - 
UR  - https://doi.org/10.1071/AS99003 
N2  - The theory of galaxy formation is reviewed brie°y. From the evidence of clusters today, the primordial gas fraction was 20% or more. Thus, while the Universe is dominated by dark matter, gas plays an appreciable role in galaxy formation. Collapses of dwarf protogalaxies produce predominantly cold gas. It is argued that, in such cold collapses, the collapsed gas is largely self-gravitating. As a result, gas processes play a critical role in determining the visible structure of galaxies. 
ER  -

