On the nature of the FBS blue stellar objects and the completeness of the Bright Quasar Survey

Abstract

The second part of the First Byurakan Survey is aimed at detecting all bright (B < 16.5) UV-excess starlike objects in a large area of the sky. By comparison with other major surveys such as the ROSAT All Sky Survey, the ROSAT WGACAT catalogue of point sources, the IRAS survey, the 6 cm Green Bank, the 1.4 GHz NRAO VLA and the 92 cm Westerbork Northern sky surveys and with the catalogue of mean U BV data on stars, we estimate the number of AGNs present in the FBS survey and its completeness.We have made spectroscopic observations of nine of the most promising FBS candidates. We have found six new QSOs bringing the total number of known QSOs in this survey to 42.By comparison with the Bright Quasar Survey, we found that the completeness of this last survey is of the order of 70% rather than 30-50% as suggested by several authors.

Search and Studies of the First Byurakan Survey Blue Stellar Objects

“…Based on new spectroscopic observations, the local density of the bright QSOs and the completeness of the Bright Quasar Survey (BQS) (Schmidt & Green, 1983) have been re-estimated. We now have obtained a surface density of QSOs brighter than B=16.16 (completeness limit of the BQS) in a subarea of the FBS covering ∼2,250 deg 2 , equal to 0.012 deg −2 , implying a completeness of 53±10% (Mickaelian et al, 1999(Mickaelian et al, , 2001.…”

“…Spectroscopic observations proved the Second part of the FBS to be a rich source of QSOs, Seyferts, WDs, CVs, etc. (Mickaelian et al, 1999, 2001, 2002a, Sinamyan & Mickaelian, 2006, 2008a,b, 2009. Altogether, spectroscopic observations have been carried out for 406 FBS objects.…”

“…Most of the observations were carried out in 1987-1991, however, to have better data, the photographic spectra were digitized and reduced in MIDAS as CCD ones (1850 pixels length). The details are given in Mickaelian et al (1999Mickaelian et al ( , 2001, and Sinamyan & Mickaelian (2006, 2008a. In Table 1 we give the statistics of spectroscopic observations of the FBS BSOs.…”

Surveys for active galaxies: discovery and studies

“…We give in Table 3 a Summary of Projects on Search and Studies of Active Galaxies by our group during 1990s-2010s. Mickaelian (2000aMickaelian ( , 2003Mickaelian ( , 2004aMickaelian ( , 2008, Mickaelian et al (1999Mickaelian et al ( , 2001bMickaelian et al ( , 2002a) IRAS BIG sample 1994-2010 AGN, SB, ULIRGs 1,178 Mickaelian (1995Mickaelian ( , 1997Mickaelian ( , 2000bMickaelian ( , 2001aMickaelian ( ,b, 2002, Mickaelian & Gigoyan (1998a,b), Mickaelian & Sargsyan (2004a,b), Mickaelian et al (1997) IRAS BIG spectroscopy 1997AGN, SB, ULIRGs 257 Mickaelian (2003, 2004b, Balaian et al (2001), Mickaelian & Sargsyan (2010), Sargsyan & Mickaelian (2006), Mickaelian et al (1998Mickaelian et al ( , 2001aMickaelian et al ( , 2002bMickaelian et al ( , 2003Mickaelian et al ( , 2018a…”