Table 3.
Sample properties.
| Galaxy | Distance | 5 GHz upper limits | rms | 33 GHz flux | Hard X-ray flux | log LH2O | Type of |
|---|---|---|---|---|---|---|---|
| (Mpc) | (mJy) | (μJy beam−1) | (mJy) | (10−11 erg s−1 cm−2) | (L⊙) | activity | |
| First obs || Second obs | |||||||
| J0126-0417 | 76.2 ± 5.4 | <0.13 | 42.5 | 0.14 ± 0.02 | <0.34 | 2.1 | U |
| J0350–0127 | 174.2 ± 12.2 | <0.13 | 37.6 | 0.17 ± 0.04 | 0.45 |
3.7 | U |
| J0437+6637 | 52.9 ± 3.7 | <0.13 | 36.8 | 0.11 ± 0.02 | 0.29 ± 0.14 | 1.4 | U |
| Mrk 0001 | 64.2 ± 4.5 | … | 45.6 || 49.7 | 3.97 ± 0.13 | <0.32 | 1.9 | Sy2 |
| Mrk 0078 | 159.9 ± 11.2 | <0.10 | 33.4 | 1.69 ± 0.11 | 0.63 ± 0.18 | 1.6 | Sy2 |
| Mrk 1029 | 126.0 ± 8.8 | <0.11 | 36.7 | 1.29 ± 0.16 | <0.35 | 2.8 | U |
| Mrk 1210 | 61.3 ± 4.3 | … | 80.0 || 32.0 | 8.14 ± 0.43 | 3.58±0.20 | 2.0 | Sy2, Sy1 |
| Mrk 1419 | 75.3 ± 5.3 | … | 39.0 || 37.0 | 0.36 ± 0.07 | <0.34 | 2.7 | LINER |
| NGC 0591 | 61.1 ± 4.3 | <0.11 | 41.3 | 1.52 ± 0.12 | 0.37 |
1.5 | Sy2 |
| NGC 1194 | 55.4 ± 3.9 | <0.12 | 38.5 | 1.05 ± 0.04 | 2.21±0.18 | 2.8 | Sy 1.9 |
| NGC 2273 | 26.8 ± 1.9 | … | 39.7 | 3.04 ± 0.36 | 0.67 ± 0.16 | 0.9 | Sy2 |
| NGC 4388 | 40.8 ± 2.9 | <0.13 | 44.6 | 3.01 ± 0.08 | 15.81 |
1.2 | Sy2 |
| NGC 5765b | 122.0 ± 8.5 | <0.11 | 37.2 | … | 0.40 |
3.6 | U |
| NGC 6264 | 145.4 ± 10.2 | <0.12 | 38.5 | … | <0.32 | 3.1 | Sy2 |
| NGC 6323 | 110.6 ± 7.8 | <0.12 | 39.1 | … | <0.30 | 2.7 | Sy2 |
| UGC 3193 | 63.2 ± 4.4 | … | 31.3 || 34.0 | 0.80 ± 0.05 | <0.39 | 2.5 | U |
| UGC 3789 | 47.4 ± 3.3 | <0.11 | 35.0 | 0.20 ± 0.02 | 0.26 |
2.7 | Sy2 |
| UGC 9639 | 155.9 ± 10.9 | <0.09 | 30.0 | … | <0.26 | 2.6 | LINER |
Notes. Column 1: name of galaxy. The sources in bold hold clean maser disks (see Sect. 2). Column 2: Hubble flow distances (relative to the 3 K Cosmic Microwave Background) in Mpc, assuming H0 = 70 km s−1 Mpc−1 (see Sect. 2). Column 3: 3σ upper limit for the non-detections in the VLBA 5 GHz observations. Column 4: rms of the 5 GHz maps. Column 5: 33 GHz integrated flux densities with uncertainties (Kamali et al. 2017). Column 6: Swift/BAT hard X-ray fluxes (20–100 keV) with uncertainties (Litzinger et al., in prep.). Column 7: logarithm of water maser luminosity in units of solar luminosity (Zhang et al. 2012, modified for H0 = 70 km s−1 Mpc−1). The NGC 5765b and UGC 9639 data are from Kuo et al. (2018). Column 8: types of nuclear activity following NED; U stands for unidentified.
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