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Investigation of Distant Quasars

Published online by Cambridge University Press:  25 July 2014

Martik Hovhannisyan ,
R. Andreasyan ,
G. Paronyan  and
H. Abrahamyan
Martik Hovhannisyan
Affiliation:
Institute of Applied Problems of Physics, Yerevan, Armenia email: [email protected]
R. Andreasyan
Affiliation:
Byurakan Astrophysical Observatory (BAO), Armenia
G. Paronyan
Affiliation:
Byurakan Astrophysical Observatory (BAO), Armenia
H. Abrahamyan
Affiliation:
Byurakan Astrophysical Observatory (BAO), Armenia
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Abstract

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To study physical and morphological characteristics of distant quasars we carry out radio-optical investigation of 30 quasars from the Cambridge 7C catalogue second area (0.097 square radians). All these objects have angular sizes less than 1 arcsec on 102 MHz images. Average values of absolute magnitudes and spectral indices have been calculated for them (M = −26.51 ± 0.25, a = 0.66±0.25). It was shown that 60% of compact radio sources from the FIRST catalogue (1400 MHz) are candidates of distant quasars.

Keywords

AGNQSOradiogalaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 236 - 237
Copyright
Copyright © International Astronomical Union 2014 

References

Artyukh, V. S. & Tyul'bashev, S. A. 1996, Astron. Rep. 40 601Google Scholar
Artyukh, V. S., Tyul'bashev, S. A., & Isaev, E. A. 1998, Astron. Rep. 42 283Google Scholar
Becker, R. H., Helfand, D. J., White, R. L., Gregg, M. D. & Laurent-Muehleisen, S. A. 1997, ApJ 475 479Google Scholar
Condon, J. J., Cotton, W. D., Greisen, E. W., Yin, Q. F., Perley, R. A., Taylor, G. B., & Broderick, J. J. 1998, AJ 115 1693Google Scholar
Cutri, R. M.et al. 2012, IPAC/CaltechGoogle Scholar