least one merger with massive satellite in their history. This event could both increase the velocity dispersion of stars and decrease the content of cold gas evidently as the result of intensive star formation burst triggered by merging. Gas partially may transform into stars, partially could be ejected from the disk due to the activity of a large number of massive stars.

Nevertheless, as it follows from Figs 1a and 3, some “red” galaxies still appear to keep their disks in the state close to marginal stability despite a high color index. It supports the idea of the existence of different mechanisms responsible for the transformation of spiral galaxies into lenticulars.\
This work was supported by grants RFBR 07-02-00792, 09-02-97021.

\[h!\] ![Baryonic Tully-Fisher relation between the disk mass and rotation velocity. Straight line corresponds to the relation presented by McGaugh (2005) for spiral galaxies where disks masses were found from their luminosity and color .](tf.jpg "fig:"){width="14cm"}

[99]{} Zasov, A.V.; Sil’chenko, O.K., UFN **180**, 4 (2010)

Jenkins, A.; Binney, J., MNRAS **245**, 305 (1990)

Binney, J.; Tremaine, S., Galactic Dynamics, (Princeton Univ.press, Princeton, NJ, 2008)

Betrin, G.; Lin, C.C., Proceedings of 10th European Regional Astronomy Meeting of the IAU, **4**, 255, 