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Table 1

Observed sources.

IRAS name RA (J2000) Dec (J2000) Observation date Telescopea rmsb (Jy) Previousc (Jy) Referencesd Imagee
07582−4059 07 59 57.7 −41 07 23 14-Sep-2008 PKS 0.16 V
08143−4406 08 16 03.0 −44 16 04 14-Sep-2008 PKS 0.18 V
08213−3857 08 23 12.1 −39 07 08 14-Sep-2008 PKS 0.12 V
09055−4629 09 07 19.5 −46 41 23 12-Sep-2008 PKS 0.09 N
09102−5101 09 11 57.3 −51 14 24 12-Sep-2008 PKS 0.06 V
14-Sep-2008 PKS 0.08
09119−5150 09 13 33.0 −52 02 41 14-Sep-2008 PKS 0.09 V
09362−5413 09 37 51.8 −54 27 09 14-Sep-2008 PKS 0.11 V
09378−5117 09 39 37.0 −51 31 29 14-Sep-2008 PKS 0.08 V
10194−5625 10 21 15.2 −56 40 32 14-Sep-2008 PKS 0.09 N, O
11444−6150 11 46 54.0 −62 07 09 13-Sep-2008 PKS 0.07 N, O
11488−6432 11 51 17.3 −64 49 12 12-Sep-2008 PKS 0.11 V
11544−6408 11 56 57.8 −64 25 17 12-Sep-2008 PKS 0.08 V
11549−6225 11 57 30.8 −62 42 12 12-Sep-2008 PKS 0.08 N, O
12067−4508 12 09 23.8 −45 25 35 15-Sep-2008 PKS 0.13 < 1.2 1 V
12302−6317 12 33 07.0 −63 33 43 15-Sep-2008 PKS 0.12 < 0.7 2 V
12360−5740 12 38 53.1 −57 56 31 13-Sep-2008 PKS 0.10 V
13010−6012 13 04 05.5 −60 28 46 14-Sep-2008 PKS 0.16 V
13245−5036 13 27 36.1 −50 52 06 14-Sep-2008 PKS 0.15 V
13266−5551 13 29 51.0 −56 06 54 14-Sep-2008 PKS 0.15 V
13313−5838 13 34 37.4 −58 53 32 14-Sep-2008 PKS 0.15 V
13398−5951 13 43 12.5 −60 07 03 12-Sep-2008 PKS 0.12 N
13404−6059 13 43 50.3 −61 14 30 13-Sep-2008 PKS 0.10 N, O
13421−6125 13 45 34.0 −61 40 03 13-Sep-2008 PKS 0.09 V
13428−6232 13 46 20.5 −62 48 00 15-Sep-2008 PKS 0.13 V
13483−5905 13 51 43.7 −59 20 15 13-Sep-2008 PKS 0.09 V
14104−5819 14 14 00.5 −58 33 58 13-Sep-2008 PKS 0.09 N, O
14249−5310 14 28 24.7 −53 24 04 13-Sep-2008 PKS 0.07 N
14325−6428 14 36 34.4 −64 41 31 15-Sep-2008 PKS 0.23 V
14331−6435 14 37 10.1 −64 48 05 15-Sep-2008 PKS 0.15 V
14346−5952 14 38 24.6 −60 04 53 15-Sep-2008 PKS 0.14 V
14429−4539 14 46 13.8 −45 52 05 15-Sep-2008 PKS 0.14 V
14521−5300 14 55 45.7 −53 12 30 15-Sep-2008 PKS 0.07 V
15038−5533 15 07 34.7 −55 44 50 15-Sep-2008 PKS 0.09 N
15229−5433 15 26 40.5 −54 44 17 12-Sep-2008 PKS 0.08 V
15284−6026 15 32 37.1 −60 37 04 15-Sep-2008 PKS 0.08 N, O
15408−5413 15 44 39.8 −54 23 05 15-Sep-2008 PKS 0.09 N, O
15408−5657 15 44 48.3 −57 07 08 15-Sep-2008 PKS 0.09 < 1.5 1 N
15452−5459 15 49 11.3 −55 08 51 12-Sep-2008 PKS 0.08 6.5 ± 0.3 3, 4 N
15531−5704 15 57 10.9 −57 13 21 12-Sep-2008 PKS 0.09 N, O
16206−5956 16 25 02.6 −60 03 32 14-Sep-2008 PKS 0.17 V
16209−4714 16 24 33.9 −47 21 30 12-Sep-2008 PKS 0.08 < 0.4 3 V
16245−3859 16 27 53.7 −39 05 46 12-Sep-2008 PKS 0.11 N, O
16279−4757 16 31 38.7 −48 04 06 14-Sep-2008 PKS 0.12 V
16296−4507 16 33 12.5 −45 13 43 12-Sep-2008 PKS 0.08 V
16279−8158 16 37 51.6 −82 04 49 12-Sep-2008 PKS 0.09 V
16507−4810 16 54 30.9 −48 15 24 12-Sep-2008 PKS 0.09 < 0.4 3 V
16517−3626 16 55 06.2 −36 31 32 12-Sep-2008 PKS 0.09 V
16558−3417 16 59 10.5 −34 22 05 12-Sep-2008 PKS 0.08 M
16567−3838 17 00 09.0 −38 43 09 15-Sep-2008 PKS 0.10 N, O
17021−3109 17 05 23.3 −31 13 18 05-Jun-2008 ROB 0.14 N, O
21-Mar-2010 GBT 0.022
17021−3054 17 05 24.1 −30 58 14 06-Jun-2008 ROB 0.10 N
21-Mar-2010 GBT 0.022
17052−3245 17 08 33.2 −32 49 44 13-Sep-2008 PKS 0.10 N, O
17067−3759 17 10 08.3 −38 03 22 13-Sep-2008 PKS 0.09 N
17097−3624 17 13 05.1 −36 27 53 13-Sep-2008 PKS 0.14 < 0.4 3 N, O
17149−3053 17 18 10.9 −30 56 39 12-Sep-2008 PKS 0.08 < 0.9 5 N
03-Mar-2010 GBT 0.023
17150−3224 17 18 19.8 −32 27 21 12-Sep-2008 PKS 0.08 < 0.4 3 V
17158−4049 17 19 19.6 −40 52 37 13-Sep-2008 PKS 0.09 N
17175−2819 17 20 42.5 −28 22 37 03-Mar-2010 GBT 0.020 < 1.1 5 V
17233−2602 17 26 28.7 −26 04 58 06-Jun-2008 ROB 0.08 < 0.7 5 V
21-Mar-2008 GBT 0.019
17291−2147 17 32 10.1 −21 49 59 06-Jun-2008 ROB 0.07 1.3 ± 0.7 5 V
21-Mar-2010 GBT 0.011
17301−2538 17 33 14.1 −25 40 24 03-Mar-2010 GBT 0.019 < 1.0 5 V
17348−2906 17 38 04.2 −29 08 23 03-Mar-2010 GBT 0.022 V
17359−2902 17 39 08.0 −29 04 06 03-Mar-2010 GBT 0.020 < 0.4 3, 5, 6 N
17360−2142 17 39 05.9 −21 43 52 01-Mar-2010 GBT 0.011 < 0.6 5 V
17361−4159 17 39 44.3 −42 00 39 13-Sep-2008 PKS 0.13 N
17376−3448 17 40 56.3 −34 50 00 15-Sep-2008 PKS 0.07 N
17382−2531 17 41 20.1 −25 32 53 03-Mar-2010 GBT 0.019 < 0.7 5 N
17385−2413 17 41 38.3 −24 14 41 01-Mar-2010 GBT 0.011 < 0.6 5 M
17385−3332 17 41 52.2 −33 33 40 15-Sep-2008 PKS 0.07 < 0.4 3 V
17393−2727 17 42 32.2 −27 28 28 03-Mar-2010 GBT 0.020 < 0.4 3, 5, 6 N, O
17404−2713 17 43 37.2 −27 14 46 03-Mar-2010 GBT 0.019 < 0.4 3, 5 N
21-Mar-2010 GBT 0.021
17479−3032 17 51 12.5 −30 33 44 03-Mar-2010 GBT 0.021 < 0.4 3 N
17482−2501 17 51 22.5 −25 01 51 03-Mar-2010 GBT 0.018 < 0.4 3, 5 N
17487−1922 17 51 44.7 −19 23 42 06-Jun-2008 ROB 0.06 < 0.7 5 V
21-Mar-2010 GBT 0.017
17499−3520 17 53 20.4 −35 21 10 15-Sep-2008 PKS 0.07 V
17506−2955 17 53 49.3 −29 55 35 03-Mar-2010 GBT 0.021 < 0.4 3 N
17516−2525 17 54 43.4 −25 26 30 01-Mar-2010 GBT 0.011 < 0.3 5, 7 V
17540−2753 17 57 14.1 −27 54 16 01-Mar-2010 GBT 0.012 N
17543−3102 17 57 33.6 −31 03 03 15-Sep-2008 PKS 0.09 < 0.4 3 N
17548−2753 17 57 57.8 −27 53 21 03-Mar-2010 GBT 0.019 < 0.4 3 N
17550−2120 17 58 04.2 −21 21 09 03-Mar-2010 GBT 0.021 < 0.4 3, 5 N, O
17550−2800 17 58 10.6 −28 00 26 03-Mar-2010 GBT 0.017 < 0.8 5 V
17552−2030 17 58 16.3 −20 30 22 01-Mar-2010 GBT 0.011 N
17560−2027 17 59 04.5 −20 27 24 01-Mar-2010 GBT 0.010 < 0.4 3, 5 V
17596−3952 18 03 06.7 −39 51 53 13-Sep-2008 PKS 0.11 V
18011−1847 18 04 02.7 −18 47 10 06-Jun-2008 ROB 0.07 < 0.8 5 N, O
21-Mar-2010 GBT 0.018
18015−1352 18 04 22.2 −13 51 49 06-Jun-2008 ROB 0.06 < 0.5 5 N, O
21-Mar-2010 GBT 0.024
18016−2743 18 04 45.8 −27 43 11 01-Mar-2010 GBT 0.012 N, O
18039−1903 18 06 53.3 −19 03 09 01-Mar-2010 GBT 0.014 11.3 ± 1.2 5 N, O
18049−2118 18 07 54.8 −21 18 09 01-Mar-2010 GBT 0.010 < 4 5 N, O
18051−2415 18 08 12.8 −24 14 36 03-Mar-2010 GBT 0.018 < 0.4 3 M
18071−1727 18 10 05.9 −17 26 35 01-Mar-2010 GBT 0.013 < 6 6 N, O
18083−2155 18 11 18.9 −21 55 05 01-Mar-2010 GBT 0.015 < 1.4 5 M
18087−1440 18 11 34.6 −14 39 56 03-Mar-2010 GBT 0.014 < 0.21 3, 5, 6 N
18105−1935 18 13 32.2 −19 35 03 01-Mar-2010 GBT 0.014 < 0.9 5 N
18113−2503 18 14 26.3 −25 02 56 03-Mar-2010 GBT 0.013 105.814 ± 0.003 5, 8 M
21-Mar-2010 GBT 0.018
18135−1456 18 16 26.1 −14 55 13 01-Mar-2010 GBT 0.014 5.3 ± 0.4 3, 5, 9, 10 N, O
18183−2538 18 21 24.7 −25 36 35 01-Mar-2010 GBT 0.012 < 1.2 5 V
18199−1442 18 22 50.8 −14 40 49 01-Mar-2010 GBT 0.013 < 0.8 5 N, O
18229−1127 18 25 45.0 −11 25 56 06-Jun-2008 ROB 0.06 < 2.4 5 V
21-Mar-2010 GBT 0.015
18236−0447 18 26 20.3 −04 45 42 01-Mar-2010 GBT 0.013 < 0.12 5, 10 N, O
18355−0712 18 38 15.4 −07 09 52 01-Mar-2010 GBT 0.012 < 0.4 3, 5, 6 N
18361−1203 18 38 58.8 −12 00 44 01-Mar-2010 GBT 0.012 < 1.3 5 V
21-Mar-2010 GBT 0.016
18385+1350 18 40 52.1 + 13 52 54 07-Mar-2010 GBT 0.015 < 0.9 5 N
18434−0042 18 46 04.4 −00 38 55 01-Mar-2010 GBT 0.011 < 0.9 f 5 N
18454+0001 18 48 01.5 + 00 04 48 01-Mar-2010 GBT 0.012 < 1.2 5 V
18470+0015 18 49 39.1 + 00 18 52 01-Mar-2010 GBT 0.013 < 1.5 5 N
18485+0642 18 50 58.9 + 06 45 55 06-Jun-2008 ROB 0.05 < 0.4 3, 5 V
18514+0019 18 53 58.0 + 00 23 25 01-Mar-2010 GBT 0.012 < 1.3 5 N
18529+0210 18 55 26.3 + 02 14 49 03-Mar-2010 GBT 0.018 M, O
07-Mar-2010 GBT 0.014
18580+0818 19 00 25.2 + 08 22 47 07-Mar-2010 GBT 0.013 < 0.8 5 N, O
18596+0315 19 02 06.4 + 03 20 15 07-Mar-2010 GBT 0.014 18 ± 6 3, 9, 11, 12, 13 N, O
19006+1022 19 02 59.9 + 10 26 35 20-Jun-2008 ROB 0.06 < 0.7 5 N
21-Mar-2010 GBT 0.013
19011+1049 19 03 30.7 + 10 53 53 07-Mar-2010 GBT 0.013 M
19013+0629 19 03 44.4 + 06 34 12 20-Jun-2008 ROB 0.06 < 0.8 5 N, O
19015+1256 19 03 52.6 + 13 01 21 07-Mar-2010 GBT 0.013 < 1.0 5 N
19071+0857 19 09 29.7 + 09 02 23 09-Oct-2010g VLA 0.0007 2.1 ± 0.5 5 N
19075+0432 19 10 00.0 + 04 37 06 07-Mar-2010 GBT 0.013 < 0.8 5, 14 V
19079−0315 19 10 32.5 −03 10 16 20-Jun-2008 ROB 0.10 < 0.8 5 V
21-Mar-2010 GBT 0.013
19094+1627 19 11 44.6 + 16 32 54 07-Mar-2010 GBT 0.013 < 1.4 5 V
19134+2131 19 15 35.4 + 21 36 33 07-Mar-2010 GBT 0.013 6.0 ± 2.4 15, 16, 17, 18, 19 N
19176+1251 19 19 55.9 + 12 57 35 20-Jun-2008 ROB 0.08 < 0.6 5 N
19178+1206 19 20 14.1 + 12 12 22 07-Mar-2010 GBT 0.012 < 0.4 20 N, O
19190+1102 19 21 25.3 + 11 08 40 07-Mar-2010 GBT 0.013 96. ± 0.4 11, 21, 22 N
19319+2214 19 34 03.4 + 22 21 14 28-Jun-2008 ROB 0.06 3.7 ± 0.5 20 N
07-Mar-2010 GBT 0.013
19374+2359 19 39 35.4 + 24 06 25 07-Mar-2010 GBT 0.013 38 ± 15 5, 23h V
20035+3242 20 05 29.6 + 32 51 35 24-Sep-2008 ROB 0.08 < 1.9 5 N
07-Mar-2010 GBT 0.010
20042+3259 20 06 10.6 + 33 07 51 28-Jun-2008 ROB 0.08 < 2.5 5 N
07-Mar-2010 GBT 0.012
20214+3749 20 23 19.2 + 37 58 52 29-Jul-2008 ROB 0.06 < 0.6 5 N
07-Mar-2010 GBT 0.011
20244+3509 20 26 25.4 + 35 19 14 24-Sep-2008 ROB 0.12 < 0.7 5 V
21-Mar-2010 GBT 0.013
20461+3853 20 48 04.6 + 39 05 01 29-Jul-2008 ROB 0.06 < 1.7 5 V
21-Mar-2010 GBT 0.013
21525+5643 21 54 15.0 + 56 57 23 29-Jul-2008 ROB 0.05 < 1.6 5 N
21-Mar-2010 GBT 0.014
21554+6204 21 56 58.3 + 62 18 43 29-Jul-2008 ROB 0.05 < 0.11 5, 10, 24 N, O
21-Mar-2010 GBT 0.014

Notes.

(a)

GBT: Green Bank. PKS: Parkes. ROB: Robledo. VLA: Very Large Array.

(b)

One-sigma noise level per spectral channel.

(c)

Previous water maser observations of the sources reported in the literature. For detections, we give the highest reported flux density and its 2σ uncertainty. For non-detections, the lowest reported 3σ upper limit is given.

(d)

References for previous water maser observations.

(e)

Visibility of sources in optical and infrared images. V: sources with optical counterpart in the Digital Sky Survey (as mentioned in Ramos-Larios et al. 2009, 2012), or with optical spectrum in Suárez et al. (2006). N: sources detected only at near-infrared wavelenghts or longer (Ramos-Larios et al. 2009, 2012). M: sources detected only at mid-infared wavelenghts or longer (Ramos-Larios et al. 2009, 2012). O: sources with strong obscuration, based on their infrared colours (Table 9 in Ramos-Larios et al. 2012).

(f)

Migenes et al. (1999) reported a water maser of 56 Jy, which was incorrectly labelled as IRAS 18434−0042. The maser is ≃ 2° away from this infrared source and it is associated with the star-forming region W43S instead.

(g)

We observed IRAS 19071+0857 with Robledo and GBT, but it was contaminated by the strong maser emission from W49A, which spilled into the telescope sidelobes. The reported detection by Yoon et al. (2014) is also most likely contaminated. The upper limit listed in this table corresponds to observations taken with the Very Large Array (Suárez et al., in prep.), which confirmed that the maser emission was not associated with IRAS 19071+0857.

(h)

Labeled as 19375+2359 in Han et al. (1998).

Reference. (1) Deguchi et al. (1989); (2) Suárez et al. (2009); (3) Deacon et al. (2007); (4) Cerrigone et al. (2013); (5) Yoon et al. (2014); (6) Gómez et al. (1990); (7) Suárez et al. (2007); (8) Gómez et al. (2011); (9) Engels et al. (1986); (10) Yung et al. (2013); (11) Brand et al. (1994); (12) Gómez et al. (1994); (13) Engels (2002); (14) Likkel (1989); (15) Engels et al. (1984); (16) Likkel et al. (1992); (17) Comoretto et al. (1990); (18) Imai et al. (2004); (19) Imai et al. (2007); (20) Engels & Lewis (1996); (21) Likkel (1989); (22) Day et al. (2010); (23) Han et al. (1998); (24) Zuckerman & Lo (1987).

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