1995A&A...295...27D


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST20:08:02

1995A&A...295...27D - Astronomy and Astrophysics, volume 295, 27-42 (1995/3-1)

A sample of small size compact steep-spectrum radio sources. I. VLBI images at 18 cm.

DALLACASA D., FANTI C., FANTI R., SCHILIZZI R.T. and SPENCER R.E.

Abstract (from CDS):

Global VLBI observations at 1.66GHz of 16 powerful radio sources from the Peacock & Wall (1981MNRAS.194..601P) catalogue and classified as Compact Steep-Spectrum (CSS) sources are presented. These sources have, on average, higher turnover frequencies and smaller overall sizes than the CSS's selected from the 3CR catalogue. The VLBI images show other substantial morphological differences, and the scenario previously drawn for 3CR galaxies and quasars may be no longer completely valid. For example, some of the CSS galaxies in this sample have bright jets and cores, and one of them (1829+290) has ∼90% of the total flux density at this frequency coming from two nearly symmetric jets. Their overall structures can be compared with those of the compact triple sources (Conway et al. 1992ApJ...396...62C). Although the galaxies in the present sample are bigger in size and not core dominated, the central component often shows a direct connection with one of the lobes, and variability is usually not observed. Quasars in this sample show a variety of morphologies, often complex or core-jet like, with compact components dominating the radio emission at this frequency.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: jets - galaxies: nuclei - galaxies: quasars: general - radio continuum: galaxies

CDS comments: sources in table 1: identifications taken in Peacock and Wall 1981

Simbad objects: 28

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Number of rows : 28

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 4C 34.07 QSO 02 26 10.3332356 +34 21 30.287547   21.3       ~ 89 1
2 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1423 2
3 ICRF J031857.8+162832 AGN 03 18 57.8028254 +16 28 32.689683     22.0     ~ 191 1
4 QSO B0319+12 QSO 03 21 53.10350836 +12 21 13.9537265   19 19     ~ 124 1
5 3C 93.1 BLL 03 48 46.9076031514 +33 53 15.460411800   20.723   19.110   ~ 127 1
6 ICRF J041045.6+765645 AGN 04 10 45.6108324 +76 56 45.313088   21 22.0 21.200   ~ 150 1
7 PKS 0428+205 rG 04 31 03.7614907 +20 37 34.264207   22.174   19.085   ~ 173 1
8 4C 31.38 Sy2 11 56 18.7446774080 +31 28 04.674314160   19.33 18.96     ~ 127 1
9 QSO B1225+368 QSO 12 27 58.7255449 +36 35 11.826886   21.5 21.5     ~ 121 0
10 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5436 1
11 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6406 3
12 4C 32.44 QSO 13 26 16.51232948 +31 54 09.5144454   21.367 19.822 18.882   ~ 159 1
13 3C 287 QSO 13 30 37.6950709913 +25 09 10.983254741   18.31 17.67     ~ 332 1
14 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825107   17.51 17.25     ~ 3866 2
15 ICRF J140028.6+621038 Sy2 14 00 28.6484960 +62 10 38.588791   22.137 20.373 19.530   ~ 165 1
16 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 699 2
17 NVSS J141604+344436 Rad 14 16 04.18623 +34 44 36.4281           ~ 89 1
18 3C 299 rG 14 21 05.6960 +41 44 49.260   20.496 19.330 18.560   ~ 178 1
19 QSO B1445+101 QSO 14 45 16.46524525 +09 58 36.0728255   18.58 17.78     ~ 367 1
20 IC 1065 Sy2 14 49 21.5921149894 +63 16 13.816373757   17.30 16.39     ~ 344 1
21 4C 33.38 Bla 16 02 07.26346106 +33 26 53.0724368     23.0 23   ~ 118 1
22 ICRF J160913.3+264129 Sy2 16 09 13.32076181 +26 41 29.0362080   19       ~ 210 0
23 3C 343 Sy2 16 34 33.8067419 +62 45 35.895020   21.06 20.61     ~ 207 1
24 4C 39.56 Sy1 18 21 20.8982144196 +39 42 44.861498005   19.598   18.135   ~ 61 1
25 ICRF J183114.8+290710 Sy2 18 31 14.8601293 +29 07 10.294403   21.917 20.2 20.200   ~ 69 1
26 4C 47.51 rG 19 21 24 +48 05.3           ~ 30 1
27 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 1008 2
28 ICRF J234403.7+822640 Sy2 23 44 03.8395911444 +82 26 40.293016848   21.769 20.5 20.220   ~ 92 1

    Equat.    Gal    SGal    Ecl

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