Star formation in bars of galaxies

Автор: Gusev A.S.
Сборник: 33RD ESLAB SYMPOSIUM ON STAR FORMATION FROM THE SMALL TO THE LARGE SCALE
Том: 445
Год издания: 2000
Место издания: ESA PUBLICATIONS DIVISION C/O ESTEC NOORDWIJK, NETHERLANDS
Первая страница: 387
Последняя страница: 390
Аннотация: UBVRI surface brightnesses and color indices of bars of galaxies are examined using surface photometry data for 42 barred galaxies. On the (U - B)(0) - (B - V)(0), (B - V)(0) - (V - R)(0), and (B - V)(0) - (V - I)(0) two-color diagrams bars of all morphological types of galaxies are to the left of the normal color sequence of galaxies. The more external parts of the bars are, the more left their position on two-color diagrams is. Using evolutionary synthesis modelling it is shown that the cause of this deviation is a deficit of the intermediate-age stars (1-9 Gyrs) in bars, apparently. Possible reasons of the abnormal stellar content of bars are discussed.
Добавил в систему: Гусев Александр Сергеевич

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