1995A&AS..113..409S

Query : 1995A&AS..113..409S

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 Alternatively, if the nucleus is no longer active and there is no fresh supply of energy to the extended features, one might find high-frequency spectral steepening caused by radiative losses.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 - 2026 		#notes
1 4C -00.01 QSO 00 06 22.6058589240 -00 04 24.453903468   20.14 19.35     ~ 196 1
2 ICRF J002225.4+001456 Sy2 00 22 25.42584644 +00 14 56.1630395   21.1       ~ 125 1
3 QSO B0023-263 BLL 00 25 49.15629900 -26 02 12.6141092   20.30 19.5 18.084   ~ 173 1
4 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 266 1
5 Z 502-27 rG 01 19 35.00087601 +32 10 50.0619670   16 14.5     ~ 249 1
6 3C 43 QSO 01 29 59.7696120312 +23 38 20.041393524           ~ 203 1
7 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
8 3C 49 rG 01 41 09.161 +13 53 28.07   22.327 20.920 20.876   ~ 189 1
9 7C 022118.10+273638.00 Sy1 02 24 12.2865158736 +27 50 11.538285648   19.502 18 18.263   ~ 210 1
10 4C 34.07 QSO 02 26 10.33325265 +34 21 30.2874853   21.3       ~ 99 1
11 QSO B0237-2322 QSO 02 40 08.1743783856 -23 09 15.729012036   16.78 16.63     ~ 516 1
12 6C 024820+430300 Bla 02 51 34.53674154 +43 15 15.8292024     18.0 13.72   ~ 221 1
13 ICRF J031857.8+162832 Sy2 03 18 57.80304294 +16 28 32.6782325     22.0     ~ 212 1
14 QSO B0319+12 QSO 03 21 53.10350560 +12 21 13.9537765   19 19     ~ 137 1
15 QSO B0400-319 Bla 04 02 21.26599921 -31 47 25.9455847   20.2   20.75   ~ 111 1
16 QSO B0400+258 Bla 04 03 05.58608082 +26 00 01.5027775     18 19.00   ~ 220 1
17 4C 76.03 rG 04 10 45.61079426 +76 56 45.3130641   21 22.0 21.200   ~ 164 1
18 PKS 0428+205 rG 04 31 03.76141386 +20 37 34.2648470   22.174   19.085   ~ 198 1
19 2C 396 QSO 04 32 36.50262174 +41 38 28.4497778     20.0     ~ 231 1
20 QSO J0459+0229 QSO 04 59 52.05066296 +02 29 31.1765162   18.2 19     ~ 166 2
21 ICRF J050321.1+020304 Sy2 05 03 21.19716454 +02 03 04.6765714   22.500 21.350 20.682   ~ 196 1
22 QSO B0511-220 Bla 05 13 49.11432318 -21 59 16.0921220   19.95 19.5 19.58   ~ 108 1
23 ICRF J052109.8+163822 Sy1 05 21 09.88596258 +16 38 22.0515459   19.37 18.84 18.480   ~ 910 1
24 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
25 PKS 0531+19 rG 05 34 44.51221055 +19 27 21.4860450   17.7       ~ 57 1
26 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1573 1
27 7C 055201.39+394824.00 Bla 05 55 30.80561419 +39 48 49.1649683     18.30 17.5   ~ 527 2
28 6C 061543+820331 Bla 06 26 03.00623818 +82 02 25.5679443   17.5 17.5 18.52   ~ 165 1
29 2C 553 QSO 06 27 10.125 -05 53 06.21           ~ 165 1
30 QSO B0646+600 Bla 06 50 31.25435548 +60 01 44.5549353   18.9 18.6 19.65   ~ 125 1
31 QSO B0710+439 QSO 07 13 38.16413557 +43 49 17.2072102   20.7       ~ 256 0
32 6C 071106+354007 Bla 07 14 24.81748958 +35 34 39.7954831     17 17.7   ~ 213 1
33 6C 073759+311929 Bla 07 41 10.70330407 +31 12 00.2291151   17.02 16.89 16.322   ~ 468 1
34 4C -06.18 Rad 07 44 21.65636148 -06 29 35.9141444           ~ 56 1
35 QSO B0742+103 Bla 07 45 33.05952486 +10 11 12.6922178     24.00 23.72   ~ 200 1
36 4C -00.28 Bla 07 45 54.08232685 -00 44 17.5399048   18 17.1 16.69   ~ 200 1
37 PKS 0802+212 Rad 08 05 38.53425281 +21 06 51.5925230           ~ 32 1
38 QSO B0834-201 Bla 08 36 39.21525204 -20 16 59.5042773   19.45 19.4 18.76   ~ 224 1
39 QSO B0858-279 BLL 09 00 40.0387763688 -28 08 20.351114232   14.74 17 19.00   ~ 77 1
40 7C 085805.20+291331.00 Sy2 09 01 05.2614565176 +29 01 46.939089828   18.84 18.08 18.600   ~ 132 1
41 3C 216.0 Bla 09 09 33.49714902 +42 53 46.4821036   19.98 19.42 18.220   ~ 520 1
42 ICRF J094336.9-081930 LIN 09 43 36.94453828 -08 19 30.8202783   19.401   18.100   ~ 125 2
43 ICRF J112027.8+142054 Sy2 11 20 27.80814059 +14 20 54.9730732   20 20.935 20.100   ~ 175 1
44 QSO J1130-1449 Bla 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 739 1
45 QSO B1143-245 Bla 11 46 08.1033450360 -24 47 32.900532360   17.97 18.0 17.20   ~ 129 1
46 ICRF J115421.7-350529 Sy1 11 54 21.7842834888 -35 05 29.079469716   18.81 17.84     ~ 139 1
47 6C 122535+365318 QSO 12 27 58.72552577 +36 35 11.8265176   21.5 21.5     ~ 139 1
48 QSO B1237-101 Bla 12 39 43.06148047 -10 23 28.6925910   18.08 18.11 17.14   ~ 146 1
49 QSO B1245-197 QSO 12 48 23.89808243 -19 59 18.5899475   21.52 20.5     ~ 145 1
50 2E 2879 Sy1 12 52 26.3561235816 +56 34 19.573734864   18.42 18.11 17.660   ~ 293 2
51 4C 67.22 rG 13 13 27.98902761 +67 35 50.3599652           ~ 61 1
52 4C 32.44 QSO 13 26 16.5142 +31 54 09.522   21.367 19.822 18.882   ~ 181 1
53 7C 132816.2+252436 QSO 13 30 37.6960744824 +25 09 10.983105972   18.31 17.67     ~ 373 1
54 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
55 PKS 1345+12 Sy2 13 47 33.36161873 +12 17 24.2398927   19.28 18.44 15.718   ~ 652 2
56 QSO B1351-018 Bla 13 54 06.89532721 -02 06 03.1904962   20.62 19.91 19.277   ~ 177 1
57 3C 298.0 Bla 14 19 08.1802187928 +06 28 34.802854680   17.12 16.79     ~ 422 1
58 3C 299 rG 14 21 05.6960 +41 44 49.260   20.496 19.330 18.560   ~ 187 1
59 8C 1443+773 Sy2 14 43 14.5707907691 +77 07 27.607161183   19   18.730   ~ 152 1
60 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
61 3C 309.1 Bla 14 59 07.58390804 +71 40 19.8668093   17.24 16.78 17.2   ~ 509 1
62 QSO B1519-273 BLL 15 22 37.67599511 -27 30 10.7855131   18.72 18.5 17.42   ~ 313 1
63 QSO B1524-136 QSO 15 26 59.44274001 -13 51 00.2643644     20.5     ~ 102 1
64 ICRF J154609.5+002624 Bla 15 46 09.53146317 +00 26 24.6145149   19.730 18.900 19.5   ~ 91 1
65 4C 33.38 Bla 16 02 07.26346417 +33 26 53.0723251     23.0 23   ~ 148 1
66 ICRF J160913.3+264129 Sy2 16 09 13.3196 +26 41 29.042   19       ~ 249 1
67 ICRF J163433.8+624535 Sy2 16 34 33.80623119 +62 45 35.8960467   21.06 20.61     ~ 220 1
68 3C 346.0 BLL 16 43 48.605 +17 15 49.43   17.2       ~ 270 1
69 2C 1569 Bla 18 29 31.7809732968 +48 44 46.160168892   17.05 16.81 16.860   ~ 713 1
70 QSO B1848+283 Bla 18 50 27.5898721080 +28 25 13.155071160   17.1 17 17.16   ~ 87 1
71 QSO B2126-15 Bla 21 29 12.17589329 -15 38 41.0419083   17.61 17.3 17.3   ~ 521 1
72 ICRF J213032.8+050217 AG? 21 30 32.87740078 +05 02 17.4745177     23.4     ~ 164 1
73 QSO B2134+0028 Bla 21 36 38.58632232 +00 41 54.2128562   17.30 17.08 17.02   ~ 580 2
74 QSO J2225+2118 Bla 22 25 38.0470440264 +21 18 06.414418332     18.19 17.65   ~ 180 1
75 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
76 ICRF J234403.7+822640 Sy2 23 44 03.8302221504 +82 26 40.345410408   21.769 20.5 20.220   ~ 104 1

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