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On the QSO Content of the First Byurakan Survey and the Completeness of the Palomar Green Survey

Published online by Cambridge University Press:  25 May 2016

P. Véron ,
A.M. Mickaelian ,
A.C. Gonçalves  and
M.P. Véron-Cetty
P. Véron
Affiliation:
Centre National de la Recherche Scientifique, Observatoire de Haute Provence, 04870 St. Michel l'Observatoire, France
A.M. Mickaelian
Affiliation:
Byurakan Astrophysical Observatory, Byurakan 378433, Republic of Armenia
A.C. Gonçalves
Affiliation:
Centre National de la Recherche Scientifique, Observatoire de Haute Provence, 04870 St. Michel l'Observatoire, France
M.P. Véron-Cetty
Affiliation:
Centre National de la Recherche Scientifique, Observatoire de Haute Provence, 04870 St. Michel l'Observatoire, France

Abstract

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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 major X-ray and radio surveys we tentatively identified as QSOs 11 FBS objects. We made spectroscopic observations of nine of them. We found six new QSOs bringing the total number of known QSOs in this survey to 42.

By comparison with the Palomar Green (PG) QSO 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.

Information

Type
II. Observational Properties of AGN and Related Objects
Information
Symposium - International Astronomical Union , Volume 194: Activity in Galaxies and Related Phenomena , 1999 , pp. 140 - 144
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Abrahamian, H. V., Lipovetsky, V. A. & Stepanian, J. A. 1990, Astrophysics, 32, 14 CrossRefGoogle Scholar
Condon, J. J., Cotton, W.D., Greisen, E. W. et al. 1998, AJ, 115, 1693 Google Scholar
Goldschmidt, P., Miller, L., La Franca, F. & Cristiani, S. 1992, MNRAS, 256, 65P Google Scholar
Hagen, H.-J., Engels, D. & Reimers, D. 1998, A&AS, (in press) Google Scholar
Kellerman, K.I., Sramek, R., Schmidt, M., Shaffer, D.B. & Green, R. 1989, AJ, 98, 1195 CrossRefGoogle Scholar
Köhler, T., Groote, D., Reimers, D. & Wisotzki, L. 1997, A&A, 325, 502 Google Scholar
La Franca, F. & Cristiani, S. 1997, AJ, 113, 1517 CrossRefGoogle Scholar
Markarian, B. E., Lipovetsky, V.A., Stepanian, J. A., Erastova, L.K. & Shapovalova, A.I. 1989, Commun. Special Astrophys. Obs., 62, 5 Google Scholar
Mermilliod, J.-C. & Mermilliod, M. 1994, Catalogue of mean UBV data on stars, Springer-Verlag Google Scholar
Mickaelian, A.M. 1994, Discovery and Investigation of Blue Stellar Objects of the First Byurakan Survey , , Google Scholar
Pennington, R. L., Humphreys, R.M., Odewahn, S.C., Zumach, W. & Thurmes, P.M. 1993, PASP, 105,521 Google Scholar
Schmidt, M. & Green, R.F. 1983, ApJ, 269, 352 CrossRefGoogle Scholar
Véron-Cetty, M.-P. & Véron, P. 1998, ESO Scientific Report Nd18 Google Scholar
Voges, W., Aschenbach, B., Boiler, T. et al. 1996, IAU circ. 6420 Google Scholar
White, N.E., Giommi, P. & Angelini, L. 1994, IAU Circ. 6100 Google Scholar