Оглавление
Изображения
Загрузить ваше изображение
DSS Images Other Images
Публикации по объекту
The Difference between the α-disks of Seyfert 1 Galaxies and Quasars In a previous paper, it was suggested that contamination of the nuclearluminosity by the host galaxy plays an important role in determining theparameters of the standard α disk of AGNs. Using the nuclearabsolute B band magnitude instead of the total absolute B bandmagnitude, we have recalculated the central black hole masses, accretionrates and disk inclinations for 20 Seyfert 1 galaxies and 17Palomar-Green (PG) quasars. It is found that a small value of αis needed for the Seyfert 1 galaxies than for the PG quasars. Thisdifference in α possibly leads to the different properties ofSeyfert 1 galaxies and quasars. Furthermore, we find most of the objectsin this sample are not accreting at super-Eddington rates if we adoptthe nuclear optical luminosity in our calculation.
| Southern Galaxy Catalogue. Not Available
|
Добавить новую статью
Внешние ссылки
- - Внешних ссылок не найдено -
Добавить внешнюю ссылку
Группы:
|
Наблюдательные данные и астрометрия
Каталоги и обозначения:
|