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Table B.1

Characteristics of the radio continuum, H2O and OH maser emission of the maser-emitting PNe and candidates studied in this paper.

Radio continuum emission Maser emission
Position Frequency Flux density Position δa Flux density
Source RA, DEC (J2000) (GHz) (mJy) RA, DEC (J2000) Transition (″) (Jy) Natureb
From our observations

IRAS 07027–7934 06:59:26.327 −79:38:47.02 2.1 5.37±0.28 06:59:26.273 −79:38.46.99 OH 1612 MHz 0.15±0.04 0.602±0.016 OHPN
IRAS 17487–1922 17:51:44.868 −19:23:42.26 2.1 0.68±0.18 17:51:44.981 −19:23:40.21 OH 1612 MHz 2.6±1.8 0.44±0.07 (OHPN)
1.5 <1.45 17:51:44.645 −19:23:38.67 OH 1612 MHz 5±9 0.52±0.05
IRAS 18443–0231 18:47:00.4017 −02:27:52.573 22.2 226.3±0.4 18:47:00.4012 −02:27:52.552 H2O 22 GHz 0.022±0.009 9.80±0.03 (H2OPN), WF
IRAS 19035+0801 19:05:56.436 +08:06:56.88 2.1 2.63±0.22 19:05:56.413 +08:06:57.86 OH 1612 MHz 1.0±0.4 0.364±0.019 (OHPN)
1.5 0.93±0.09 19:05:56.289 +08:06:56.17 OH 1612 MHz 2.3±5.9 0.857±0.019

From our observations and the literature

IRAS 18019–2216c 18:04:57.359 −22:15:50.84 22.2 0.583±0.018 18:04:57.347 −22:15:50.91 H2O 22 GHz 0.18±0.26 0.332±0.010 (H2OPN), WF
IRAS 18480+0008d 18:50:36.659 +00:12:28.25 3.0 1.90±0.22 18:50:36.685 +00:12:28.34 OH 1665 MHz 0.4±1.9 0.116±0.009 (OHPN)
18:50:36.659+00:12:28.13 22.2 2.020±0.013 18:50:36.6614 +00:12:28.191 H2O 22 GHz 0.071±0.020 1.957±0.014 (H2OPN), (WF)

From the literature

IRAS 16029–5055 16:06:40.60 −51:03:57.2 5.5 3.02±0.15 16:06:40.637 −51:03:55.73 OH 1612 MHz 1.5±0.9 1.31±0.13 (OHPN)
IRAS 18213–1245A 18:24:09.722 −12:43:22.84 4.8 3.6±0.8 18:24:09.727 −12:43:23.90 OH 1665 MHz 1.1±1.0 0.139±0.005 (OHPN)
18:24:09.706 −12:43:24.04 H2O 22 GHz 1.22±1.41 3.70±0.04 (H2OPN)
IRAS 18464–0140 18:48:56.647 −01:36:42.98 3.0 4.8±0.4 18:48:56.523 −01:36:43.32 OH 1612 MHz 1.9±1.9 1.749±0.021 (OHPN)
18:48:56.62 −01:36:44.3 OH 1665 MHz 1.4±1.7 0.500±0.010
18:48:56.523 −01:36:42.99 OH 1667 MHz 1.9±1.5 1.90±0.010
18.48.56.65 −01.36.43.04 H2O 22 GHz 0.1±0.4 16.11±0.14 (H2OPN), WF
IRAS 18508+0047 18:53:22.196 +00:50:49.03 1.4 2.58±0.22 18:53:22.29 +00:50:48.46 OH 1612 MHz 1.5±1.9 0.529±0.005 (OHPN)
IRAS 19176+1251 19:19:55.744 +12:57:37.70 1.5 3.01±0.28 19:19:55.850 +12:57:37.80 OH 1720 MHz 1.6±0.4 0.115±0.003 (OHPN)
IRAS 19194+1548 19:21:40.374 +15:53:55.16 1.5 3.23±0.26 19:21:40.514 +15:53:54.74 OH 1612 MHz 2.1±1.2 0.917±0.008 OHPN
19:21:40.286 +15:53:46.39 OH 6035 MHz 8.86±1.12 4.80±0.11
OH 25.646–0.003 18:38:06.242 −06:28:51.22 5 2.21±0.04 18:38:06.165 −06:28:54.10 OH 1612 MHz 3.1±1.9 0.254±0.005 (OHPN)

Notes: a Relative distance between the radio continuum emission peak and the maser spot. b In parenthesis sources candidates to PN or candidate to WF. WF: water fountain characteristics. c This source is a previously reported OHPN candidate (Cala et al. 2022). d The flux density at 3 GHz was reported in VLASS (Gordon et al. 2021), and the 1665 MHz was reported in THOR (Beuther et al. 2019).

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