... or sometimes rings or bar-like features) of molecular gas are sooner a rule than an exception for massive spiral galaxies ... In many cases a dense circumnuclear gas produces strongly enhanced star formation which is observed as starburst nucleus. ...
... the value of $Q_{VRI}$ is the presence of sites of star formation which takes place in the nucleus and the inner disk ... Long slit spectral observations published earlier are used to construct the mass model of this galaxy. ...
... be sure that the rotation of gas (or stars) bears signs of non-axisymmetrical poten ... The masses ratios of spherical and disc components for R = 1 kpc are shown in the ...