C.D.S. - SIMBAD4 rel 1.7 - 2020.10.25CET10:09:23

2003A&A...403..555A - Astronomy and Astrophysics, volume 403, 555-560 (2003/5-4)

Investigation of radio sources from the interplanetary scintillation Pushchino Survey. I. Cross-identification with the 7C and FIRST radio catalogues.


Abstract (from CDS):

Interplanetary scintillating (IPS) radio sources from the Pushchino Survey (PS) in the area of 0.11 sr have been cross-identified with objects from the 7C and FIRST catalogues. We have obtained improved positions of IPS radio sources, which are necessary for their optical identification. The data on sizes and morphology provided by the FIRST catalogue have shown that more than 50% of IPS radio sources are single and compact (<3") at ν=1400MHz. Most of them belong to the class of compact steep spectrum radio sources. About 15% of IPS radio sources are single partially resolved FIRST objects (sizes of 3"- 9") and another 11% are double radio sources with compact components. The remaining 22% have larger sizes and, as a rule, a more complex structure too. Because IPS sources certainly contain an appreciable part of their radiation at low frequencies (100MHz) in very compact (∼0.1") components and have steep spectra, we hope that a significant part of the Pushchino Survey objects are very probable candidates for steep spectrum quasars.

Abstract Copyright:

Journal keyword(s): catalogs - radio continuum: galaxies - quasars: general

VizieR on-line data: <Available at CDS (J/A+A/403/555): table1.dat table2.dat>

Nomenclature: Table 1, cols(7, 8): [AKK2003] 7C NNNa, [AKK2003] 7C NNNW, N=260. Table 2, col(1, 2, 3): [AKK2003] FIRST NNNaN, [AKK2003] FIRST NNNWN, N=392.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
1 3C 236.0 BLL 10 06 01.7502377 +34 54 10.401469   15.97       ~ 415 2
2 Mrk 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2405 1

    Equat.    Gal    SGal    Ecl

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