1995A&AS..113..409S


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.22CET20:54:22

1995A&AS..113..409S - Astron. Astrophys., Suppl. Ser., 113, 409-418 (1995/November-1)

Millimeter-wavelength observations of compact steep-spectrum sources.

STEPPE H., JEYAKUMAR S., SAIKIA D.J. and SALTER C.J.

Abstract (from CDS):

Using the IRAM 30-m telescope, we have measured 90- and 230-GHz flux densities for a sample of 76 sources, about 70 of which are compact steep-spectrum radio sources (CSSs). These flux densities have been used to extend the radio spectra of the CSSs to millimeter wavelengths, and look for deviations of their high-frequency spectra from the trends established at lower frequencies. Since flat-spectrum, cm-wavelength, nuclear components have been detected in some of these sources, it is possible that such radio cores are self-absorbed at cm wavelengths, but could make their presence felt in the mm range via a flattening of the integrated spectrum. Alternatively, if the nucleus is no longer active and there is no fresh supply of energy to the extended features, one might find high-frequency spectral steepening caused by radiative losses. In this paper we present the results of our observations and discuss their implications.

Abstract Copyright:

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

Nomenclature: Table 1: [SJS95] HHMM+DDd N=76

CDS comments: table 1 : 4C 00.28 misprint for 4C -00.28

Simbad objects: 76

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Number of rows : 76

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 -00.01 QSO 00 06 22.6078586755 -00 04 24.414841835   20.14 19.35     ~ 182 1
2 ICRF J002225.4+001456 BiC 00 22 25.4258623 +00 14 56.161217   21.1       ~ 103 1
3 QSO B0023-263 BLL 00 25 49.1562959 -26 02 12.614458   20.30 19.5 18.084   ~ 142 1
4 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 240 1
5 4C 31.04 rG 01 19 35.0033970 +32 10 50.058043   16 14.5     ~ 218 1
6 3C 43 QSO 01 29 59.7699511792 +23 38 20.043694669           ~ 191 0
7 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2550 2
8 3C 49 rG 01 41 09.10 +13 53 28.0   22.327 20.920 20.876   ~ 175 1
9 7C 022118.10+273638.00 Sy1 02 24 12.2882485914 +27 50 11.569481672   19.502 18 18.263   ~ 205 1
10 4C 34.07 QSO 02 26 10.3332356 +34 21 30.287547   21.3       ~ 87 1
11 QSO B0237-2322 QSO 02 40 08.1742481040 -23 09 15.727160394   16.78 16.63     ~ 479 0
12 QSO B0248+430 QSO 02 51 34.53674204 +43 15 15.8291997     18.0 13.72   ~ 196 1
13 ICRF J031857.8+162832 AGN 03 18 57.8028254 +16 28 32.689683     22.0     ~ 190 1
14 QSO B0319+12 QSO 03 21 53.10350836 +12 21 13.9537265   19 19     ~ 122 1
15 QSO B0400-319 QSO 04 02 21.26601027 -31 47 25.9453862   20.2   20.75   ~ 81 1
16 QSO B0400+258 QSO 04 03 05.58606763 +26 00 01.5028075     18 19.00   ~ 184 1
17 ICRF J041045.6+765645 AGN 04 10 45.6108324 +76 56 45.313088   21 22.0 21.200   ~ 147 1
18 PKS 0428+205 rG 04 31 03.7614907 +20 37 34.264207   22.174   19.085   ~ 171 1
19 2C 396 QSO 04 32 36.5025939 +41 38 28.449052     20.0     ~ 209 1
20 QSO J0459+0229 QSO 04 59 52.05066226 +02 29 31.1765607   18.2 19     ~ 155 1
21 ICRF J050321.1+020304 Sy2 05 03 21.1971480 +02 03 04.676648   22.500 21.350 20.682   ~ 177 1
22 QSO B0511-220 QSO 05 13 49.1143160 -21 59 16.091337   19.95 19.5 19.58   ~ 94 1
23 ICRF J052109.8+163822 Sy1 05 21 09.88592749 +16 38 22.0517668   19.37 18.84 18.480   ~ 764 1
24 QSO J0530+13 QSO 05 30 56.41672 +13 31 55.1495     20.0 19.35   ~ 889 1
25 PKS 0531+19 rG 05 34 44.5076 +19 27 21.530   17.7       ~ 48 1
26 ICRF J054236.1+495107 Sy1 05 42 36.13789843 +49 51 07.2337251   18.45 17.80 17.210   ~ 1294 1
27 7C 055201.39+394824.00 QSO 05 55 30.80561150 +39 48 49.1649664     18.0 17.5   ~ 472 2
28 6C 061543+820331 QSO 06 26 03.00616906 +82 02 25.5678202   17.5 17.5 18.52   ~ 149 1
29 2C 553 QSO 06 27 10.1 -05 53 06           ~ 148 1
30 QSO B0646+600 QSO 06 50 31.2543062 +60 01 44.554767   18.9 18.6 19.65   ~ 106 1
31 QSO B0710+439 QSO 07 13 38.16412910 +43 49 17.2071530   20.7       ~ 231 0
32 7C 071105.79+353949.00 QSO 07 14 24.8173518143 +35 34 39.801232997     17 17.7   ~ 199 1
33 ICRF J074110.7+311200 Sy1 07 41 10.7032630079 +31 12 00.232776104   17.02 16.89 16.322   ~ 417 1
34 4C -06.18 Rad 07 44 21.6563623 -06 29 35.914159           ~ 46 1
35 QSO B0742+103 QSO 07 45 33.05952141 +10 11 12.6923363       23.72   ~ 178 1
36 4C -00.28 QSO 07 45 54.08232111 -00 44 17.5398546   18 17.1 16.69   ~ 177 1
37 PKS 0802+212 Rad 08 05 38.5342477 +21 06 51.592856           ~ 26 1
38 QSO B0834-201 QSO 08 36 39.21525294 -20 16 59.5040953   19.45 19.4 18.76   ~ 173 1
39 QSO B0858-279 BLL 09 00 40.0387032 -28 08 20.347385   14.74 17 19.00   ~ 64 1
40 3C 213.1 AGN 09 01 05.258 +29 01 46.93   18.84 18.08 18.600   ~ 118 1
41 ICRF J090933.4+425346 Sy2 09 09 33.4971425 +42 53 46.481984   19.98 19.42 18.220   ~ 467 0
42 ICRF J094336.9-081930 LIN 09 43 36.9444590 -08 19 30.818298   19.401   18.100   ~ 110 2
43 ICRF J112027.8+142054 G 11 20 27.80726 +14 20 54.9914   20 20.935 20.100   ~ 145 1
44 QSO J1130-1449 QSO 11 30 07.05259287 -14 49 27.3881476   17.17 16.90 16 16.97 ~ 637 1
45 QSO B1143-245 QSO 11 46 08.1038916032 -24 47 32.896655354   17.97 18.0 17.20   ~ 114 1
46 ICRF J115421.7-350529 Sy1 11 54 21.7845240380 -35 05 29.081533088   18.81 17.84     ~ 117 1
47 QSO B1225+368 QSO 12 27 58.7255449 +36 35 11.826886   21.5 21.5     ~ 118 0
48 QSO B1237-101 QSO 12 39 43.06147929 -10 23 28.6925079   18.08 18.11 17.14   ~ 133 1
49 QSO B1245-197 QSO 12 48 23.8980846 -19 59 18.588983   21.52 20.5     ~ 124 1
50 2E 2879 Sy1 12 52 26.3557117356 +56 34 19.567896586   18.42 18.11 17.660   ~ 273 2
51 ICRF J131327.9+673550 G 13 13 27.9889603 +67 35 50.359991           ~ 51 1
52 4C 32.44 QSO 13 26 16.51232948 +31 54 09.5144454   21.367 19.822 18.882   ~ 157 1
53 3C 287 QSO 13 30 37.6950709913 +25 09 10.983254741   18.31 17.67     ~ 330 1
54 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3816 2
55 ICRF J134733.3+121724 Sy2 13 47 33.36161542 +12 17 24.2402572   19.28 18.44 15.718   ~ 534 3
56 QSO B1351-018 QSO 13 54 06.89532213 -02 06 03.1904447   20.62 19.91 19.277   ~ 132 1
57 3C 298.0 QSO 14 19 08.1804677481 +06 28 34.803573057   17.12 16.79     ~ 372 1
58 3C 299 rG 14 21 05.6960 +41 44 49.260   20.496 19.330 18.560   ~ 177 1
59 8C 1443+773 Sy2 14 43 14.0 +77 07 28   19   18.730   ~ 141 1
60 QSO B1445+101 QSO 14 45 16.46524525 +09 58 36.0728255   18.58 17.78     ~ 362 1
61 ICRF J145907.5+714019 Sy1 14 59 07.5831170610 +71 40 19.867413302   17.24 16.78 17.2   ~ 458 1
62 QSO B1519-273 BLL 15 22 37.67598872 -27 30 10.7854174   18.72 18.5 17.42   ~ 265 1
63 QSO B1524-136 QSO 15 26 59.4427289 -13 51 00.264100     20.5     ~ 90 1
64 ICRF J154609.5+002624 Bla 15 46 09.5314561 +00 26 24.614551   19.730 18.900 19.5   ~ 75 1
65 7C 160012.00+333509.00 Bla 16 02 07.26346106 +33 26 53.0724368     23.0 23   ~ 114 1
66 ICRF J160913.3+264129 Sy2 16 09 13.32076181 +26 41 29.0362080   19       ~ 208 0
67 3C 343 Sy2 16 34 33.8067419 +62 45 35.895020   21.06 20.61     ~ 206 1
68 3C 346.0 BLL 16 43 48.605 +17 15 49.43   17.2       ~ 250 0
69 ICRF J182931.7+484446 Sy1 18 29 31.7812801678 +48 44 46.158815781   17.05 16.81 16.860   ~ 640 1
70 QSO B1848+283 QSO 18 50 27.5896910962 +28 25 13.154274911   17.1 17 17.16   ~ 74 1
71 QSO B2126-15 QSO 21 29 12.17589777 -15 38 41.0413097   17.61 17.3 17.3   ~ 471 1
72 ICRF J213032.8+050217 G 21 30 32.87739291 +05 02 17.4741657     23.4     ~ 145 1
73 QSO B2134+0028 QSO 21 36 38.5862648232 +00 41 54.210724774   17.30 17.08 17.02   ~ 528 2
74 QSO J2225+2118 QSO 22 25 38.04713545 +21 18 06.4150549     18.19 17.65   ~ 156 1
75 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 995 2
76 ICRF J234403.7+822640 Sy2 23 44 03.8395911444 +82 26 40.293016848   21.769 20.5 20.220   ~ 90 1

    Equat.    Gal    SGal    Ecl

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2021.01.22-20:54:22

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