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Evolution of galaxies: Inside-out? outside-inстатья
Дата последнего поиска статьи во внешних источниках: 18 марта 2016 г.
- Автор: Sil'chenko O.K.
- Журнал: Astronomical and Astrophysical Transactions
- Том: 29
- Номер: 1
- Год издания: 2015
- Издательство: Cambridge Scientific Publishers
- Местоположение издательства: Cambridge
- Первая страница: 9
- Последняя страница: 16
- Аннотация: In this review I discuss the directions of building up galaxies - from their central parts towards the periphery or by gas inflow into the center starting from outer disks towards central bulges and nuclei. I stress that particular evolutionary mechanisms also shape morphological types of galaxies, so the galaxies of different types can have different directions of build up. Recent observations of various samples of galaxies, including those at high redshifts as well as nearby galaxies in different environments, allow us to conclude that elliptical galaxies evolve inside-out, while lenticular galaxies in groups and clusters evolve outside-in. The evolution of spiral galaxies is complex and depends on a sequence of gas acquisition events. The most common way is continuous formation of thin stellar disks at intermediate distances from the center.
- Добавил в систему: Сильченко Ольга Касьяновна