2009A&A...502..529S

Query : 2009A&A...502..529S

2009A&A...502..529S - Astronomy and Astrophysics, volume 502, 529-540 (2009/8-1)

New H2O masers in Seyfert and FIR bright galaxies. III. The southern sample.

SURCIS G., TARCHI A., HENKEL C., OTT J., LOVELL J. and CASTANGIA P.

Abstract (from CDS):

A relationship between the water maser detection rate and far infrared (FIR) flux densities was established as a result of two 22GHz maser surveys in a complete sample of galaxies (Dec>-30°) with 100µm flux densities of >50Jy and >30Jy. We attempted to discover new maser sources and investigate the galaxies hosting the maser spots by extending previous surveys to southern galaxies with particular emphasis on the study of their nuclear regions. A sample of 12 galaxies with Dec←30° and S100µm>50Jy was observed with the 70-m telescope of the Canberra deep space communication complex (CDSCC) at Tidbinbilla (Australia) in a search for water maser emission. The average 3σ noise level of the survey was 15mJy for a 0.42km/s channel, corresponding to a detection threshold of ∼0.1 L☉ for the isotropic maser luminosity at a distance of 25Mpc. Two new detections are reported: a kilomaser with an isotropic luminosity LH2O∼5L☉ in NGC 3620 and a maser with about twice this luminosity in the merger system NGC 3256. The detections have been followed-up by continuum and spectral line interferometric observations with the Australia Telescope Compact Array (ATCA). In NGC 3256, a fraction (about a third) of the maser emission originates in two hot spots associated with star formation activity, which are offset from the galactic nuclei of the system. The remaining emission may originate in weaker centres of maser activity distributed over the central 50''. For NGC 3620, the water maser is coincident with the nuclear region of the galaxy. Our continuum observations indicate that the nature of the nuclear emission is probably linked to particularly intense star formation. Including the historical detection in NGC 4945, the water maser detection rate in the southern sample is 15% (3/20), consistent with the northern sample. The high rate of maser detections in the complete all-sky FIR sample (23%, 15/65) confirms the existence of a link between overall FIR flux density and maser phenomena. A relation between H2O and OH masers in the FIR sample is also discussed.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: NGC 3620, NGC 3256 - galaxies: active - galaxies: ISM - masers - radio lines: ISM - radio lines: galaxies

Simbad objects: 78

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Number of rows : 78
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 778 2
2 IC 10 G 00 20 25.50 +59 17 17.0   13.6 9.5     ~ 1118 1
3 NGC 134 GiP 00 30 21.920 -33 14 34.54   11.14 10.12 9.69 10.4 ~ 162 0
4 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3332 2
5 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1501 2
6 NGC 660 Sy2 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 556 2
7 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1666 2
8 NGC 972 rG 02 34 13.3574389680 +29 18 40.604917356   12.1 13.63     ~ 171 2
9 NGC 1055 GiP 02 41 45.233 +00 26 35.45 11.59 11.40 10.59 10.5 10.7 ~ 283 2
10 UGCA 39 GiG 02 41 55.092 +59 36 14.73   16       ~ 349 1
11 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4599 2
12 NGC 1084 GiG 02 45 59.926 -07 34 43.10 11.22 11.59 10.73 10.55 11.1 ~ 368 2
13 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1341 3
14 NGC 1313 AG? 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 687 2
15 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1801 2
16 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1515 1
17 UGC 2855 H2G 03 48 20.731 +70 07 58.37   14.6       ~ 137 2
18 NGC 1559 GiG 04 17 35.7508602240 -62 47 01.251567384   11.19 10.45 10.11 10.4 ~ 282 1
19 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1241 3
20 NGC 1672 SyG 04 45 42.552 -59 14 50.68 10.29 10.53 9.68 9.53 10.2 ~ 400 1
21 NGC 1792 Sy1 05 05 14.4036930408 -37 58 50.064531168   10.68 10.18 9.53 10.4 ~ 234 1
22 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 721 3
23 MMB G192.600-00.048 Y*O 06 12 54.0100 +17 59 23.200           ~ 400 0
24 IC 2162 HII 06 13 04.1 +17 58 44           ~ 358 2
25 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 720 2
26 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1788 1
27 NGC 2559 GiG 08 17 06.074 -27 27 20.95   11.71   10.10 10.7 ~ 75 0
28 NGC 2905 H2G 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1116 3
29 NGC 2997 GiG 09 45 38.7542237472 -31 11 27.345810192   9.97 9.41 8.84 9.9 ~ 421 0
30 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5855 6
31 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1391 3
32 ICRF J100614.0-501813 QSO 10 06 14.00931655 -50 18 13.4707354   20.78       ~ 28 0
33 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 847 2
34 QSO B1057-797 BLL 10 58 43.30979475 -80 03 54.1598058   19.08   17.31   ~ 192 0
35 NGC 3521 G 11 05 48.5680991376 -00 02 09.245076540 10.06 9.83 9.02 10.1 9.6 ~ 817 2
36 M 108 SBG 11 11 30.967 +55 40 26.84   10.70       ~ 471 1
37 NGC 3620 AG? 11 16 04.680 -76 12 58.74   15.9       ~ 75 1
38 NGC 3621 Sy2 11 18 16.300 -32 48 45.36 10.10 9.44 9.56 8.07 10.1 ~ 590 3
39 M 66 GiP 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1386 4
40 NGC 3628 GiP 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 826 3
41 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 978 4
42 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1331 1
43 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1690 0
44 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1159 1
45 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2165 1
46 NGC 4088 GiP 12 05 34.2230093952 +50 32 21.064017876   11.2       ~ 407 1
47 NGC 4102 Sy2 12 06 23.0 +52 42 40   11.8       ~ 422 1
48 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3688 2
49 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 918 2
50 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 996 2
51 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1845 2
52 NGC 4414 GiG 12 26 27.1276893168 +31 13 24.626206488 11.12 10.96 10.12     ~ 566 2
53 NGC 4490 GiP 12 30 34.5 +41 38 26 10.03 10.22 9.79     ~ 574 3
54 M 88 Sy2 12 31 59.1525062448 +14 25 13.148971824   14.33 13.18     ~ 804 1
55 NGC 4527 GiP 12 34 08.4 +02 39 15   12.4       ~ 532 2
56 NGC 4631 GiP 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1095 2
57 NGC 4666 EmG 12 45 08.676 -00 27 42.88   11.7   11.5 10.7 ~ 387 1
58 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1386 2
59 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3042 2
60 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 939 2
61 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1474 2
62 NGC 5005 GiP 13 10 56.312 +37 03 32.19   14.67 13.67     ~ 541 2
63 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1223 2
64 QSO B1313-333 QSO 13 16 07.98594757 -33 38 59.1726741   18.04 20.0 17.23   ~ 253 1
65 NAME Centaurus A Sy2 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4482 3
66 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4329 4
67 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2571 2
68 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2959 4
69 NGC 6000 Sy2 15 49 49.556 -29 23 12.50   13.02   11.27 12.0 ~ 112 1
70 NGC 6744 GiG 19 09 46.1335950504 -63 51 26.897079024   9.28 8.25 8.08 9.6 ~ 275 0
71 QSO B1921-293 BLL 19 24 51.05595254 -29 14 30.1210248   18.71 18.21 15.07   ~ 868 0
72 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1224 1
73 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2527 2
74 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1227 2
75 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 552 3
76 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 906 2
77 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1106 2
78 NAME Local Group GrG ~ ~           ~ 8385 0

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