2010A&A...518A...9O


Query : 2010A&A...518A...9O

2010A&A...518A...9O - Astronomy and Astrophysics, volume 518, A9-9 (2010/7-2)

TANGO I: interstellar medium in nearby radio galaxies. Molecular gas.

OCANA FLAQUER B., LEON S., COMBES F. and LIM J.

Abstract (from CDS):

Powerful radio-AGN are hosted by massive elliptical galaxies that are usually very poor in molecular gas. Nevertheless, gas is needed at their very center to feed the nuclear activity. We study the molecular gas properties (i.e., mass, kinematics, distribution, origin) of these objects, and compare them with results for other known samples. At the IRAM-30m telescope, we performed a survey of the CO(1-0) and CO(2-1) emission from the most powerful radio galaxies of the Local Universe, selected only on the basis of their radio continuum fluxes. The main result of our survey is that the molecular gas content of these galaxies is very low compared to spiral or FIR-selected galaxies. The median value of the molecular gas mass, including detections and upper limits, is 2.2x108M. When separated into FR-I and FR-II types, a difference in their H2 masses is found. The median value of FR-I galaxies is about 1.9x108M and higher for FR-II galaxies, at about 4.5x108M. Which is probably entirely because of a Malmquist bias. Our results contrast with those of previous surveys, whose targets were mainly selected by means of their FIR emission, implying that we measure higher observed masses of molecular gas. Moreover, the shape of CO spectra suggest that a central molecular gas disk exists in 30% of these radio galaxies, a lower rate than in other active galaxy samples. We find a low level of molecular gas in our sample of radio-selected AGNs, indicating that galaxies do not need much molecular gas to host an AGN. The presence of a molecular gas disk in some galaxies and the wide range of molecular gas masses may be indicative of different origins for the gas, which we can not exclude at present (e.g., minor/major mergers, stellar mass loss, or accretion).

Abstract Copyright:

Journal keyword(s): Galaxy: evolution - galaxies: luminosity function, mass function - radio continuum: galaxies

Simbad objects: 62

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Number of rows : 62
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Z 479-45 rG 00 37 05.4904711536 +25 41 56.361743556   14.8       ~ 78 0
2 NGC 315 LIN 00 57 48.8590525608 +30 21 08.842041360 12.80 12.20 11.16 11.26   ~ 744 2
3 NGC 326 rG 00 58 22.6298561088 +26 51 58.701156300   14.9 13     ~ 172 2
4 NGC 375 IG 01 07 05.9200285896 +32 20 53.197225548   16.5       ~ 52 0
5 NGC 383 rG 01 07 24.9647814840 +32 24 45.132586200   13.6 12.14     ~ 747 3
6 ZwCl 0107+3212 ClG 01 10.3 +32 28     12.14     ~ 22 0
7 4C 31.04 rG 01 19 34.9816472856 +32 10 50.119481928   16 14.5     ~ 224 1
8 NGC 541 IG 01 25 44.3069825040 -01 22 46.086331044 13.42 13.03 12.08     ~ 200 2
9 NGC 547 GiP 01 26 00.6208982520 -01 20 42.432452268   13.16 13.34     ~ 331 3
10 ACO 194 ClG 01 26 01.3 -01 22 02           ~ 340 2
11 NGC 708 BiC 01 52 46.482 +36 09 06.53 14.85 14.27 13.29 12.67 12.09 ~ 224 3
12 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 675 1
13 UGC 1841 Sy1 02 23 11.4132676224 +42 59 31.378354260   15.71 14.81     ~ 543 2
14 NGC 1265 GiC 03 18 15.674 +41 51 27.94   14.7       ~ 354 2
15 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2093 1
16 3C 88 QSO 03 27 54.1958253504 +02 33 41.995667376   13.95       ~ 214 1
17 2C 349 Sy2 03 58 54.4370049840 +10 26 02.791855968   16.68 15.41     ~ 331 2
18 3C 129 rG 04 49 09.064 +45 00 39.40   19       ~ 251 2
19 MCG+05-16-010 AGN 06 52 02.5060831464 +27 27 39.387328884   14.9       ~ 78 1
20 3C 189 QSO 07 58 28.1073189672 +37 47 11.795201844   14.15 14.9     ~ 244 1
21 ICRF J083915.8+285038 Sy1 08 39 15.8238507312 +28 50 38.883713352   16.0 14.90     ~ 90 0
22 2MASX J08400233+2949027 Sy2 08 40 02.336 +29 49 02.73   20.00 19.62     ~ 166 1
23 7C 0915+3203 AGN 09 18 57.9197964240 +31 51 10.798451460   15.5       ~ 61 1
24 2MASX J09272355+2955293 rG 09 27 23.5416653040 +29 55 29.521460100           ~ 20 0
25 B2.1 0924+30 Rad 09 27 37.7 +29 56 40           ~ 15 1
26 NGC 2892 rG 09 32 52.9316927952 +67 37 02.634719448   14.4       ~ 59 1
27 3C 236.0 BLL 10 06 01.7484699264 +34 54 10.440080208   15.97       ~ 429 2
28 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2512 1
29 NGC 3801 LIN 11 40 16.9446846648 +17 43 40.575768960   13.3       ~ 192 1
30 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1036 1
31 3C 264.0 QSO 11 45 05.0096246784 +19 36 22.731608448   14.98 13.97     ~ 558 2
32 UGC 7115 LIN 12 08 05.5490514552 +25 14 14.260024176   14.4       ~ 79 0
33 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1167 0
34 NGC 4278 LIN 12 20 06.8253868 +29 16 50.713486 11.54 11.09 10.16     ~ 915 2
35 3C 272 rG 12 24 28.5 +42 06 36   22       ~ 62 1
36 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1694 2
37 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6649 3
38 NGC 5127 LIN 13 23 45.0315298080 +31 33 56.527040808   13.9       ~ 167 0
39 NGC 5141 LIN 13 24 51.4473830544 +36 22 42.858775560   13.9       ~ 175 1
40 ACO 1800 ClG 13 49 41.4 +28 04 08           ~ 102 0
41 NVSS J135013+281644 rG 13 50 13.5886368960 +28 16 45.022767744   16.02       ~ 39 1
42 NVSS J140000+283038 rG 14 00 00.40 +28 30 38.2           ~ 37 1
43 QSO B1404+286 BLL 14 07 00.3941769384 +28 27 14.692128372   16.13 15.35 10.29   ~ 724 2
44 NGC 5490 rG 14 09 57.330 +17 32 43.53   13.4 15.5     ~ 153 1
45 NGC 5532 LIN 14 16 52.9370483064 +10 48 26.616631104   13.3 12.59     ~ 334 3
46 IC 1065 Sy2 14 49 21.5927137128 +63 16 13.799495280   17.30 16.39     ~ 347 1
47 MCG+05-35-018 AGN 14 49 27.9240277488 +27 46 50.329531668   15.0       ~ 47 1
48 NVSS J151404+300846 rG 15 14 04.1733109056 +30 08 47.270705424   16.47       ~ 36 0
49 2MFGC 12478 G 15 27 44.4099822504 +28 55 06.607834248           ~ 74 1
50 3C 321 Sy2 15 31 43.473 +24 04 18.93   16.0   15.40   ~ 314 1
51 UGC 10094 B LIN 15 56 03.9120697440 +24 26 52.920616848   15.4       ~ 91 1
52 3C 327 Sy2 16 02 27.4 +01 57 56   17.70 16.31     ~ 233 0
53 NGC 6251 Sy2 16 32 31.9740654384 +82 32 16.403167068 15.24 14.66 12.89 7.62   ~ 693 0
54 2C 1473 AGN 17 20 28.1680537512 -00 58 46.582453920   15.36       ~ 309 1
55 3C 386.0 rG 18 38 26.25747 +17 11 49.6210           ~ 190 1
56 MCG+08-36-003 LSB 19 41 45.9805683216 +50 35 45.372755328   14.9 14.0     ~ 106 1
57 3C 403.0 Sy2 19 52 15.7996999344 +02 30 24.238200816   15.42 16.5     ~ 309 1
58 NGC 7052 rG 21 18 33.0441963648 +26 26 49.174586196 15.52 14.85 13.09     ~ 309 1
59 2MASX J21234458+2504272 Sy2 21 23 44.5778423928 +25 04 27.670672416   17.660 16.350     ~ 310 0
60 NGC 7236 LIN 22 14 44.9886363216 +13 50 47.450963760   14.3 14.3     ~ 263 2
61 UGC 12064 AGN 22 31 20.5885689288 +39 21 29.593072404   14.6       ~ 426 1
62 NGC 7720 Sy1 23 38 29.3826586776 +27 01 53.266063332   13.9 13.3     ~ 522 4

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2022.05.25-19:18:54

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