Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.183..155t&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 183, no. 1, Sept. 1991, p. 155-162.
Astronomy and Astrophysics
Astrophysics
3
Galactic Rotation, Luminosity, Spiral Galaxies, Velocity Distribution, Galactic Structure, Hubble Constant, Least Squares Method
Scientific paper
Dependence of the central velocity gradients on Hubble's type is presented for 78 spiral galaxies with existing rotation curves. The dependence of the maximum rotational velocities of 27 galaxies on both Hubble's type and the luminosity is also studied. The central velocity gradient is shown to be related with Hubble's type. Maximum rotational velocities of 27 galaxies of the sample depend on Hubble's type such that the mean values of maximum rotational velocity decrease from Sa through Sc. It is also determined that there is a dependence of the maximum rotational velocity on the absolute blue magnitude for each intrinsic Hubble type. For each Hubble type, maximum rotational velocity increases with increasing absolute blue magnitudes.
Gokmen Tektunali H.
Tektunali Fusun Limboz
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