Lenticular Galaxies at the Outskirts of the Leo II Group: NGC 3599 and NGC 3626статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We have studied unbarred S0 galaxies, NGC 3599 and NGC 3626, the members
of the X-ray bright group Leo II, by means of 3D spectroscopy, long-slit
spectroscopy, and imaging, with the aim to identify epoch and mechanisms
of their transformation from spirals. Both galaxies have appeared to bear
a complex of features resulting obviously from minor merging:
decoupled gas kinematics, nuclear starforming rings, and multi-tiered
oval large-scale stellar disks. The weak-emission line nucleus of NGC 3599
bears all signs of the Seyfert activity, according to the line-ratio
diagnostics of the gas excitation mechanism. After all,
we conclude that the transformation of these lenticular galaxies has
had place about 1--2 Gyr ago, through the gravitational mechanisms
not related to hot intragroup medium of Leo II.