2013A&A...560A..12W


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST19:10:37

2013A&A...560A..12W - Astronomy and Astrophysics, volume 560A, 12-12 (2013/12-1)

22 GHz water maser search in 37 nearby galaxies. Four new water megamasers in Seyfert 2 and OH maser/absorber galaxies.

WAGNER J.

Abstract (from CDS):

We report four new 22 GHz H2O water masers found in a Green Bank Telescope search toward 37 nearby objects. Our goal was to find new maser galaxies, active galactic nucleus (AGN) disk masers, and objects where hydroxyl and water maser species coexist. We observed 37 sources within 250Mpc that were selected by high X-ray luminosity (LX>1040W) and high absorbing column density (NH>1022cm–2). Sources included dual or triple AGN and interacting systems. We also searched objects detected in hydroxyl (OH). A catalog of 4038 known H2O (non)detections was assembled to avoid unnecessary reobservations. The final selection consisted of 16 new sources, 13 nondetections to follow up with a factor 10 higher sensitivity, 10 OH masers and 1 deep OH absorber, of which 37 were observed. Water megamasers were detected towards the Sy 2 galaxy 2MFGC 13581, towards the 6GHz OH absorber NGC 4261 and towards the two 1.6GHz OH maser sources IRAS 17526+3253 and IRAS 20550+1656. We set upper limits on 33 nondetections. The detection rate was 25% in OH galaxies and 11% overall. The mean sensitivity was 4mJy over 24.4kHz (0.31km/s) or between 0.1L and 1.0L rms for the distances covered by the source sample. Combined with other searches, a total of 95 objects have now been searched for both OH and H2O masers. The maser features in 2MFGC 13581 are typical of a sub-parsec accretion disk, whereas NGC 4261 likely has jet masers in a masing torus. The NGC 4261 galaxy (3C 270; dusty torus, twin jet) and its masers appear similar to NGC 1052, where continuum seed emission by a twin jet supports masers in the torus. Imaging with very long baseline interferometry is required to determine the masing regions in NGC 4261 and 2MFGC 13581. IRAS 17526+3253 has narrow 350L systemic masers, and the tentative 5σ detection in IRAS 20550+1656 (II Zw 96) strongly resembles massive star formation kilomasers in NGC 2146. The latter two detections increase to eight the number of known ``dual-species'' objects containing both OH and H2O masers. Further, we found the overall dual-species detection rate (8 in 95) to be of the order of the joint probability of both species independently occurring in the same object (1% lower bound). However, this needs to be verified by a more detailed analysis that accounts for the individual selection criteria of the 95 searched objects. Lastly, we see a lack of H2O kilomasers in OH megamaser objects, which was previously noted. This may be due to sensitivity bias rather than for astrophysical reasons.

Abstract Copyright:

Journal keyword(s): masers - surveys

Simbad objects: 53

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Number of rows : 53

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 2MASX J00183589-0702555 Sy2 00 18 35.9039891621 -07 02 55.811313459   15.20 14.1 13.83   ~ 30 0
2 ESO 350-38 AGN 00 36 52.489 -33 33 17.23   14.31 14.41 13.49   ~ 281 0
3 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2858 2
4 2MASX J00515190-3039596 EmG 00 51 51.9230003555 -30 40 00.275630746   16.176   15.026   ~ 15 0
5 NGC 315 LIN 00 57 48.88335 +30 21 08.8122 12.80 12.20 11.16 11.26   ~ 683 2
6 NGC 526 Sy1 01 23 54.3778199024 -35 03 55.695504754   14.76 14.60 13.46   ~ 291 1
7 ZW III 35 Sy2 01 44 30.516 +17 06 09.18   15.24 14.81     ~ 218 0
8 2MFGC 1358 G 01 48 35.652 +12 51 43.78           ~ 5 0
9 NGC 833 Sy2 02 09 20.846 -10 07 59.11   14.02 13.00 12.75   ~ 154 0
10 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 679 1
11 NGC 1052 GiP 02 41 04.79851 -08 15 20.7517 11.84 11.41 10.47 10.71   ~ 1102 2
12 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 3984 2
13 IC 1858 LIN 02 49 08.4316042823 -31 17 22.767357047   14.15   12.67   ~ 41 0
14 MCG-02-08-039 Sy2 03 00 30.6257296009 -11 24 57.016279252   14 14.3 13.45   ~ 96 0
15 NGC 1167 LIN 03 01 42.358 +35 12 20.34   13.84 12.77     ~ 285 2
16 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3461 3
17 2MFGC 3334 G 04 04 40.593 -16 30 14.28   16.80   15.43   ~ 7 0
18 UGC 3097 G 04 35 48.470 +02 15 29.79   15.6       ~ 37 0
19 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 603 2
20 UGC 3789 GiG 07 19 30.892 +59 21 18.48   13.3       ~ 104 0
21 UGC 4211 Sy2 08 04 46.362 +10 46 36.35   14.9       ~ 36 0
22 UGC 5101 Sy1 09 35 51.694 +61 21 10.52   15.20 15.50     ~ 497 4
23 NGC 2974 Sy2 09 42 33.267 -03 41 56.82   12.19   10.77   ~ 402 0
24 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5214 6
25 NGC 3079 Sy2 10 01 57.80342 +55 40 47.2428 11.57 11.54 10.86     ~ 1219 3
26 IC 2545 IG 10 06 04.581 -33 53 05.55   15.27 14.27 14.25   ~ 92 0
27 NGC 3341 AGN 10 42 31.480 +05 02 38.21   14.9       ~ 33 0
28 UGC 5881 Sy2 10 46 42.477 +25 55 54.00   15.0       ~ 47 0
29 MCG+05-27-014 LIN 11 11 25.213 +26 57 48.97           ~ 63 0
30 NGC 3655 Sy2 11 22 54.6353248122 +16 35 24.232295688   12.575 11.904 11.366 10.732 ~ 150 0
31 NGC 3690 IG 11 28 31.326 +58 33 41.80   13.19 12.86     ~ 864 4
32 ESO 320-30 H2G 11 53 11.722 -39 07 48.72   13.30   11.86   ~ 146 1
33 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1532 0
34 NGC 4261 LIN 12 19 23.21607184 +05 49 29.7000920   13.92 12.87     ~ 1089 0
35 NGC 4939 Sy2 13 04 14.3281622249 -10 20 22.316482221   14.81 13.80 10.92   ~ 256 1
36 ESO 323-77 Sy2 13 06 26.1213873662 -40 24 52.594127368   13.58 13.42 12.01   ~ 183 0
37 UGC 8327 PaG 13 15 15.73 +44 24 27.0           ~ 15 0
38 Mrk 273 Sy2 13 44 42.070 +55 53 13.17   15.68 14.91     ~ 814 3
39 IC 4374 QSO 14 07 29.76224452 -27 01 04.2931696   13.61   11.79   ~ 115 3
40 NGC 5793 Sy2 14 59 24.807 -16 41 36.55   14.47 13.32 12.77   ~ 121 1
41 NGC 5806 AGN 15 00 00.432 +01 53 28.56   12.40 11.70 10.94 11.6 ~ 231 1
42 NGC 5861 Sy2 15 09 16.091 -11 19 17.98   13.34 12.62 11.03 11.5 ~ 140 0
43 NAME CG 1517+39 EmG 15 19 47.088 +39 45 36.65   16.75 16.12     ~ 38 1
44 MCG+01-40-010 G 15 39 05.1706185661 +05 34 16.570266704   14.9       ~ 17 0
45 2MASX J16424018-0943192 LIN 16 42 40.188 -09 43 19.24   16.77       ~ 80 0
46 2MFGC 13581 Sy2 16 58 15.4997698870 +39 23 29.233636715   17.7       ~ 22 0
47 6dFGS gJ172322.0-001701 LIN 17 23 21.943 -00 17 00.96   15.1       ~ 367 0
48 UGC 11035 G 17 54 29.392 +32 53 14.22   14.3       ~ 46 1
49 UGC 11185 Sy2 18 16 09.346 +42 39 22.69   15.9       ~ 23 0
50 2MASX J20572362+1707445 PaG 20 57 23.628 +17 07 44.60   15.2       ~ 140 0
51 NGC 7130 AGN 21 48 19.490 -34 57 04.73   12.86 13.87 11.57   ~ 375 0
52 UGC 12237 Sy2 22 54 19.673 +11 46 56.85   15.7       ~ 40 0
53 NGC 7742 GiP 23 44 15.7546655695 +10 46 01.536389590   12.5       ~ 191 0

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2019.10.23-19:10:37

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