Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-23T07:38:03.466Z Has data issue: false hasContentIssue false

Investigation of Distant Quasars

Published online by Cambridge University Press:  25 July 2014

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
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Type
Contributed Papers
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