The FIRST-APM QSOs Survey in the SBS sky region

Details The FIRST-APM QSOs Survey in the SBS sky region The FIRST-APM QSOs Survey in the SBS sky region

1999-11-15

arxiv.org/abs/astro-ph/9911284v1

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures, 3rd Guillermo Haro Astrophysics Conference

Scientific paper

The main goal of the FIRST-APM QSO Survey (FAQS) survey is to compile the most complete sample of Bright QSOs, located in the well optically investigated area of the sky covered by the Second Byurakan Survey (SBS). We do that through the combination of both radio and optical surveys, down to the magnitude limit B<18.5. We report here the first results of our ongoing study, that is based upon the cross-identification of the FIRST radio catalog and the Automated Plate Measuring Machine (APM) optical catalog. The overlapping sky area between the FIRST and the SBS surveys is about 700 sq. deg. Our compiled list of sources for this overlapping region contains ~400 quasar candidates brighter than B=18.5. Of which, about 90 objects are already spectroscopically classified. These objects have been discovered maynly by the SBS survey. During 1999, we have carried out spectroscopic observations for more than 100 FAQS objects with the 2.1m telescope of the Guillermo Haro Astrophysical Observatory (GHO). So far, in the studied subsample, we have found 33 new QSOs, 2 Seyfert Galaxies, 15 emission line galaxies, 1 BL Lac, and 45 high galactic latitude stars. Amongst the 33 QSOs, we have found two broad absorption line (BAL) QSOs, namely, FAQS 151113.7+490557 and FAQS 161744.4+515054. These two BAL QSOs are radio-loud, and have radio-to-optical flux ratios (log R) with values of 1.1 and 2.5 respectively. The last object being the brightest radio-loud BAL QSO known, with a flux density of 99.8 mJy at 1.4 Ghz.

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