【摘要】 本文从类星体与星系成协、类星体是遥远的星系核以及类星体跟活动星系,正常星系形成一个活动程度的明显序列等方面,评述了类星体和星系的关系。这些关系是否意味着类星体和星系有演化上的联系,还有待从观测和理论上作进一步研究。更多还原

【Abstract】 A review on relations between quasars and galaxies is presented here.Some of low-redshift quasars are close to galaxies with the same redshifts, mingling in the groups or clusters of galaxies. The distorted isophotes of associated galaxies suggest the presence of interactions. Perhaps nearby QSOs may be powered by interaction with a gas-rich companion. There is no reason as yet to suppose that more distant QSOs are of any essential difference. When space telescope comes to work, one will probably find some faint galaxies at higher redshifts associated with the QSOs with the same redshifts. This will support cosmological interpretation of the redshifts.In addition to the evidences for extended structure in a number of low-redshift QSOs, the finding by Boroson and Oke of an early-type absorption spectrum in the 3C48 nebulosity is consistent with the conventional view that quasar phenomena occur in galactic nuclei, although most quasars are so far away that there is little hope of detecting underlying galaxies which might be associated with them.There exists, as we know, a gap between Seyfert and normal galaxies. However, by comparing the properties of the activities of quasars, Seyfert galaxies and normal galaxies,a continuity of their behaviour is shown.更多还原