New Extended Radio Sources From the NVSS
V.R. Amirkhanyan (1), V.L. Afanasiev (2), A.V. Moiseev (2) ((1) SAI, MSU, (2) SAO RAS)
TL;DR
This paper reports spectroscopic observations of nine new extended radio sources from the NVSS catalog, measuring their redshifts and physical sizes, with some reaching near the maximum known size of radio sources.
Contribution
It provides new spectroscopic data and size measurements for recently discovered extended radio sources, including some among the largest known.
Findings
Redshifts of host galaxies range from 0.1 to 0.4.
Two sources reach sizes of 2.1 Mpc and 4.0 Mpc.
Some sources are close to the maximum known size of radio sources.
Abstract
We report the results of the spectroscopic observations carried out at the SAO RAS 6-m telescope for the optical components of nine new extended radio sources found in the NVSS catalog. The measured redshifts of the host galaxies are in the range of z=0.1-0.4. The physical sizes of radio sources were calculated within the standard cosmological model. The two most extended objects, 0003+1512 and 0422+0351 reach the sizes of 2.1 Mpc and 4.0 Mpc, respectively. This is close to the maximum size of known radio sources.
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