2008A&A...479..111C

Query : 2008A&A...479..111C

2008A&A...479..111C - Astronomy and Astrophysics, volume 479, 111-122 (2008/2-3)

New H2O masers in Seyfert and FIR bright galaxies II. The intermediate luminosity range.

CASTANGIA P., TARCHI A., HENKEL C. and MENTEN K.M.

Abstract (from CDS):

Recently, a relationship between the water maser detection rate and far infrared (FIR) flux density has been found as a result of a 22GHz maser survey in a sample comprised of northern galaxies with 100µm flux density >50Jy and a declination >-30°. The survey has been extended toward galaxies with lower FIR flux densities in order to confirm this correlation and to discover additional maser sources for relevant follow-up interferometric studies. A sample of 41 galaxies with 30Jy<S100µm<50Jy and δ>-30° was observed with the 100-m telescope at Effelsberg in a search for the 22GHz water vapor line. The average 3σ noise level of the survey is 40mJy for a 1km/s channel, corresponding to a detection threshold for the isotropic maser luminosity of ∼0.5L☉ at a distance of 25 Mpc. Two detections are reported: a megamaser with an isotropic luminosity, L(H2O), of ≃35L☉ in the Seyfert/HII galaxy NGC613 and a kilomaser with L(H2O)≃1L☉_ in the merger system NGC520. The high luminosity and the presence of a Seyfert nucleus favor an association for NGC613 with an active galactic nucleus. The kilomaser in NGC520 was also detected with the Very Large Array, providing a position with subarcsecond accuracy. The H2O emission, originating from a ≲0.02pc sized region with a brightness temperature >1010K (if the observed variations are intrinsic to the masing cloud(s)), is close to one of the two radio continuum sources located in the inner parsecs of NGC520. The maser is most likely associated with a young supernova remnant (SNR), although an association with a low-luminosity AGN (LLAGN) cannot be ruled out. The maser detection rate, with 2 new maser sources out of 41 galaxies observed, is consistent with expectations extrapolated from the statistical properties of the S100µm>50Jy sample. The H2O kilomasers are ``subluminous'', while H2O megamasers tend to be ``superluminous'' with respect to the FIR luminosity of their parent galaxy, when compared with sites of massive star formation in the Milky Way.

Abstract Copyright: ∼

Journal keyword(s): masers - galaxies: active - galaxies: nuclei - galaxies: starburst - galaxies: statistics - radio lines: galaxies

Nomenclature: Tables 4, 5: [CTH2008] NGC 520 A (Nos A-G).

Simbad objects: 79

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Number of rows : 79
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 IC 10 G 00 20 25.50 +59 17 17.0   13.6 9.5     ~ 1118 1
2 NGC 157 Sy2 00 34 46.7879913696 -08 23 47.273597952   11.0 19.00 10.03 10.7 ~ 351 0
3 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3335 2
4 NGC 262 Sy2 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 735 3
5 NGC 278 H2G 00 52 04.3452013728 +47 33 01.675026036   10.5       ~ 234 1
6 4C 01.02 Bla 01 08 38.77110544 +01 35 00.3171844   18.54 18.39 19.05   ~ 543 1
7 QSO B0119+041 Bla 01 21 56.86169274 +04 22 24.7342932   19.2 19.5 19.40   ~ 188 1
8 [CTH90] NGC 520 C01 Rad 01 24 34.78 +03 47 29.8           ~ 3 0
9 [CTH90] NGC 520 C02 PoG 01 24 34.85 +03 47 29.9           ~ 3 0
10 [R2005b] 12 HXB 01 24 34.89 +03 47 29.5           ~ 4 0
11 NGC 520 AG? 01 24 34.90 +03 47 29.4 12.41 12.24 11.42     ~ 513 3
12 [CTH2008] NGC 520 C Rad 01 24 34.899 +03 47 29.91           ~ 3 0
13 [BPC2003] 7 Rad 01 24 34.915 +03 47 29.84           ~ 3 0
14 [CTH90] NGC 520 C05 PoG 01 24 34.93 +03 47 29.8           ~ 3 0
15 [CTH2008] NGC 520 F Rad 01 24 34.97 +03 47 29.9           ~ 1 0
16 [CTH2008] NGC 520 G Rad 01 24 35.01 +03 47 29.7           ~ 1 0
17 QSO J0125-0006 Bla 01 25 28.8438355224 -00 05 55.930595964   16.92 16.64 16.30   ~ 294 1
18 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5838 1
19 NGC 613 AGN 01 34 18.235 -29 25 06.56   10.77 12.71 9.50 10.6 ~ 409 3
20 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2815 2
21 NGC 908 Sy1 02 23 04.569 -21 14 01.86   11.03 10.18 9.84 10.6 ~ 192 1
22 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 1026 2
23 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1299 2
24 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4600 2
25 NGC 1385 EmG 03 37 28.323 -24 30 04.60 11.28 11.50 10.94 10.45 11.7 ~ 272 2
26 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1516 1
27 UGC 2866 GiG 03 50 15.0019023336 +70 05 40.328180844   15.5       ~ 71 1
28 NGC 1482 EmG 03 54 38.928 -20 30 08.82 13.15 13.14 12.15 11.29   ~ 294 2
29 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 667 0
30 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 720 2
31 NGC 2339 H2G 07 08 20.5343958360 +18 46 48.812128644   12.3       ~ 144 1
32 FIRST J080431.0+360718 Sy2 08 04 31.01 +36 07 18.1   21.80 21.22     ~ 32 2
33 NGC 2566 GiG 08 18 45.608 -25 29 58.27   11.81   10.50 11.2 ~ 81 0
34 NGC 2960 SyG 09 40 36.3826266216 +03 34 37.235848260   13.60       ~ 175 1
35 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5858 6
36 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1391 3
37 NGC 3175 EmG 10 14 42.1304335632 -28 52 19.628995332   12.14   11.7 11.2 ~ 100 0
38 IC 2560 Sy2 10 16 18.7073057664 -33 33 49.720274676   12.53 13.31 11.25 12.2 ~ 260 0
39 NGC 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 773 1
40 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1121 2
41 NGC 3504 LIN 11 03 11.3 +27 58 21   13.48 12.93     ~ 524 2
42 NGC 3593 GiG 11 14 36.9731893800 +12 49 05.497790664   11.8       ~ 359 2
43 NGC 3675 GiG 11 26 08.5641089832 +43 35 09.587062464   11.04   9.57   ~ 284 1
44 UGC 6472 C G 11 28 30.70 +58 33 48.4           ~ 351 0
45 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 978 4
46 NAME NGC 3690 West GiP 11 28 31.02 +58 33 40.7   11.8       ~ 629 4
47 NAME NGC 3690 East AGN 11 28 33.07 +58 33 54.2   11.8       ~ 631 4
48 NGC 3810 GiG 11 40 58.7615811624 +11 28 15.808680696   11.4       ~ 335 2
49 NGC 3893 GiP 11 48 38.207 +48 42 38.84   11.23 10.67     ~ 369 1
50 NGC 4030 GiP 12 00 23.6102390784 -01 06 00.197099136   11.42   10.3 10.4 ~ 340 1
51 NGC 4041 SyG 12 02 12.2376697152 +62 08 14.096124312   11.6       ~ 252 1
52 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2165 1
53 NGC 4157 GiP 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 353 2
54 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2364 3
55 NGC 4355 Sy2 12 26 54.6206739120 -00 52 39.421212996   14.21 13.37     ~ 491 2
56 NGC 4536 GiP 12 34 27.1 +02 11 18 11.14 11.16 10.55 17.393   ~ 852 3
57 NGC 4605 GiG 12 39 59.2837284936 +61 36 32.822365392   10.94   10.35   ~ 326 2
58 NGC 4654 GiP 12 43 56.638 +13 07 34.86   11.8       ~ 567 1
59 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1987 3
60 NGC 5033 Sy2 13 13 27.535 +36 35 37.14   11.01 12.03 9.73   ~ 869 3
61 NGC 5078 LIN 13 19 50.01126042 -27 24 37.0178091   11.51   10.14 11.1 ~ 114 1
62 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 474 1
63 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4329 4
64 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4341 2
65 NGC 5248 GiG 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 508 0
66 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2914 2
67 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1215 2
68 NGC 5676 GiG 14 32 46.853 +49 27 28.11   11.7       ~ 254 1
69 NGC 5713 GiP 14 40 11.528 -00 17 21.16 11.88 11.84 11.20     ~ 398 2
70 NGC 5775 GiP 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 434 2
71 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 767 1
72 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2961 4
73 NGC 6643 AG? 18 19 46.370 +74 34 06.23   11.80       ~ 307 1
74 W 49n HII 19 10 13.2 +09 06 12           ~ 469 3
75 NGC 6951 Sy2 20 37 14.1228088488 +66 06 20.049916392   11.64 10.65     ~ 526 2
76 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2458 1
77 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2095 3
78 NGC 7541 GiP 23 14 43.857 +04 32 02.04   12.7       ~ 320 1
79 NGC 7771 GiG 23 51 24.880 +20 06 42.57 13.42 13.08 12.25     ~ 338 4

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