... Among the mechanisms initially proposed there have been dry ma jor merging but it gives too many extramassive present-day elliptical galaxies and active nucleus feedback. ...
... The slow mechanisms (`slow' means those acting during many galaxy rotation p eriods) are the mechanisms of secular evolution; they may b e internal or external. ...
... galaxy distribution which involves two excitation mechanisms, namely photoionization ... excitation mechanism acting within the emission-line rings of the galaxies studied ...
... with single-exponential disks; 13 of them have the morphological type SB0SB0/a. Previously, lenticular galaxies have already been actively attracted the attention of researchers who determined the stellar population parameters in the nucleus and the ...
... However, some weak accretion observed centers our galaxies: Table can that despite absence of powerful active nuclei sample, almost all galaxies have pointlike nonthermal sources the nuclei, either radio Xray. these sources evidently fueled, there must ...
... active nuclei (shocks) is shown according to the model calculations by Kewley et al. (2001); panel (b) corresponding to the MPFS field of view shows a mask that separates out the knots being studied with isophotes in the H emission line superimposed on ...
... In active galactic nuclei and at shock fronts, this ratio is ... including the spectra of spiral galaxies with various types of ... already been pointed out in barred galaxies (see, e.g., Boker ...
... galaxies: elliptical and lenticular, cD galaxies: evolution galaxies: individual ... galaxies and group members--in the SA0/a-galaxy NGC 3593 (Bertola et al. 1996) and ...