... Fig. 3 are shown fragments of the echelle spectra of the quasar S5 0014+81 ( ) obtained with the PF echelle spectrograph within the frames of the programme of study of absorption spectra of bright quasars (authors of the programme are D.A.Varshalovich and ...
... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of ...
... Schmidt, M.; Green, R. F., Quasar evolution derived from the Palomar bright quasar survey and other complete quasar surveys, 1983, ApJ, 269, 352 . ...
... of such tasks, for instance, the observations of absorption spectra of quasars with , when the S/N ratio at an hour exposure is ... The diffraction grating employed in quasar observations with the MSS has with a collimated beam of d coll =258mm. ...
... of the sample is low enough, the entire luminosity function of quasars is observed up to redshifts z 1, which allows an attempt to be made to detect cosmological evolution of the quasar luminosity function after determining the redshifts for all sample ...
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Ссылки http://jet.sao.ru/hq/marat/publ/articles/Letters6_00ChavushLO.pdf -- 62.4 Кб -- 24.02.2010 Похожие документы
... Among the ten objects studied, three are quasars, four are BL Lac objects, two are ... samples is to try to detect cosmological evolution in the properties of quasars ...
... Five objects have been classified as quasars (three have redshifts z > 2), two as BL ... determined from all the lines is z = 2.485, and the object is classified as a quasar ...
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Ссылки http://jet.sao.ru/hq/marat/publ/articles/AR_46_9_697_2002.pdf -- 225.1 Кб -- 24.02.2010 Похожие документы