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Disturbed radio and optical morphology in the interacting galaxy pairs

Published online by Cambridge University Press:  21 February 2013

M. Kunert-Bajraszewska
Affiliation:
Toruń Centre for Astronomy, N. Copernicus University, Gagarina 11, 87-100 Toruń, Poland email: magda@astro.uni.torun.pl
A. Janiuk
Affiliation:
Center for Theoretical Physics, PAS, Al.Lotnikow 32/46, 02-668 Warsaw, Poland
M. Hajduk
Affiliation:
Nicolaus Copernicus Astronomical Center, PAS, Bartycka 18, 00-716 Warsaw, Poland
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Abstract

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We present high resolution radio observations and their analysis of a radio-loud compact steep spectrum (CSS) sources FIRST J164311.3+315618 and FIRST J150805.6+342323. The radio observations presented here were made with the multi-element radio linked interferometer network (MERLIN) at 1.66 GHz and 5 GHz. The radio source FIRST J164311.3+315618 is associated with a small separation, 2.3 arcsec, radio-loud/radio-quiet binary quasar. The radio object FIRST J150805.6+342323 is associated with the north-eastern member of an interacting galaxy pair separated by 24 arcseconds. Our observations revealed disrupted radio morphology of both CSS sources. The distortions of the host galaxy of the two systems are also clearly visible in the optical images and, in the case of binary quasar FIRST J164311.3+315618, are well correlated with the radio ones. We suggest that the ignition of the AGN activity and its complex morphology is caused by the interaction with the companion in the process of merging.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

References

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