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• Target type: Known_Class_II
  

• Abstract

  The 22 GHz H2O maser line was observed towards 79 candidate high-mass protostellar objects from a flux-limited sample of 6.7 GHz methanol sources. The emission was detected in 41 sources, towards 28 of these for the first time. The detection rate of 52% was similar to rates reported for other samples of high-mass protostars selected mainly with far-infrared (FIR) colour criteria. The median value of H2O maser luminosity of 10-5.5 Lsun is equal to that of the CH3OH maser luminosity, whereas the median OH maser luminosity was found to be ~1.5 orders of magnitude lower. Comparison of the velocity ranges showing maser emission implies that for the majority of sources the H2O and CH3OH maser lines originate from different regions. The percentage of sources with emission in two or three of the maser species, their association with radio continuum and IR emission and the maser and IR luminosities are consistent with the view that evolutionary phases with H2O and CH3OH masers largely overlap and precede the OH maser phase, while at a later stage OH and CH3OH masers may coexist. Strong correlations of OH and CH3OH maser luminosities with IR luminosity and only a marginal correlation of H2O and IR luminosity confirm current pumping schemes of all three maser lines.

  Comments: Velocity resolution: 0.07 km/s

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Image	Line	Vrange	Vpeak	Fpeak	∫F dv	Telescope	Vstep	RMS	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)				H2O	(km/s)	(km/s)	(Jy)	(Jy*km/s)		(km/s)	(Jy)	(arcsec)	Yes/No		(kpc)
1	18 27 45	-11 14 41	20.2411	0.0656	G20.237+0.065	20.24+0.07	Image	22 GHz;		57.3	1.7	1.3	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
2	18 30 36.5	-10 06 44	21.5701	-0.0309	G21.563-0.031	21.57-0.03	Image	22 GHz;		99	1.6	1.1	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
3	18 30 35.7	-09 34 26	22.0457	0.2213	G22.039+0.222	22.05+0.22	Image	22 GHz;		53.4	2.5	0.8	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	SFR		2003 Aug 12-15,19
4	18 34 54.5	-08 50 04	23.1931	-0.3814	G23.207-0.378	23.19-0.38	Image	22 GHz;	77.2;79.8	78.1	31.9	22.1	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
5	18 34 30.8	-08 42 42	23.2571	-0.2382	G23.257-0.240	23.26-0.24	Image	22 GHz;	54.55;59.65	55.3	2.3	2.8	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
6	18 33 13.1	-08 23 56	23.3871	0.1900	G23.389+0.185	23.39+0.19	Image	22 GHz;		72	3.3	3.5	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
7	18 35 22.9	-08 01 11	23.9703	-0.1103	G23.966-0.110	23.97-0.11	Image	22 GHz;	31;73.8	32.8	8.8	14.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	MIXED		2003 Aug 12-15,19
8	18 35 9.6	-07 34 53	24.3341	0.1402	G24.329+0.144	24.33+0.14	Image	22 GHz;	58.25;112.75	61.7	7.4	39.6	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
9	18 34 53	-07 19 11	24.5348	0.3216	G24.535+0.322	24.53+0.32	Image	22 GHz;	102.45;109.55	103.3	5.5	6.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	MIXED		2003 Aug 12-15,19
10	18 36 29.2	-07 05 05	24.9265	0.0766	G24.942+0.075	24.93+0.08	Image	22 GHz;		47.7	1.1	1.3	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
11	18 38 3.1	-06 24 32	25.7052	0.0418	G25.709+0.044	25.71+0.04	Image	22 GHz;		63.4	1.2	0.7	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
12	18 39 4.7	-06 24 17	25.8259	-0.1829	G25.826-0.178	25.83-0.18	Image	22 GHz;	66.5;122.9	94.9	338	754	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
13	18 40 3.8	-04 58 09	27.2142	0.2572	G27.220+0.260	27.21+0.26	Image	22 GHz;		18.6	4.1	5.9	EFF	0.066	0.450	40	+H2O +CH3OH II			2003 Aug 12-15,19
14	18 41 50.7	-05 01 45	27.3640	-0.1647	G27.367-0.165	27.36-0.16	Image	22 GHz;	81.25;97.75	95.7	50.6	121	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
15	18 41 47.5	-04 33 11	27.7812	0.0649	G27.784+0.057	27.78+0.07	Image	22 GHz;	68.65;101.75	69.6	1.1	2.3	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR		2003 Aug 12-15,19
16	18 42 57.8	-04 14 21	28.1939	-0.0512	G28.200-0.050	28.19-0.05	Image	22 GHz;	89;96.4	90.7	7.1	15.6	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
17	18 42 54.5	-04 00 04	28.3994	0.0698	G28.397+0.078	28.40+0.07	Image	22 GHz;		40.1	2.6	2.6	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		2003 Aug 12-15,19
18	18 42 35.2	-03 29 26	28.8168	0.3746	G28.817+0.365	28.82+0.37	Image	22 GHz;	83.15;90.45	87.2	81.5	93.4	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
19	18 42 12.8	-03 24 26	28.8483	0.4955	G28.842+0.494	28.85+0.50	Image	22 GHz;	84.55;90.05	86.9	12.2	29.4	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II			2003 Aug 12-15,19
20	18 46 23.7	-02 17 56	30.3112	0.0731	G30.317+0.070	30.31+0.07	Image	22 GHz;	44.45;48.75	47.9	5.6	9.3	EFF	0.066	0.450	40	+H2O +CH3OH II	MIXED		2003 Aug 12-15,19
21	18 47 36.5	-02 01 11	30.6979	-0.0693	G30.702-0.068	30.70-0.07	Image	22 GHz;	52.85;99.55	54.7	1.9	10.8	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
22	18 46 41.2	-01 48 31	30.7807	0.2320	G30.781+0.231	30.78+0.23	Image	22 GHz;	59.1;66.7	39.1	0.5	1.7	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR		2003 Aug 12-15,19
23	18 46 48	-01 48 56	30.7874	0.2036	G30.788+0.204	30.79+0.20	Image	22 GHz;	64.6;77	72	5.5	7.7	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
24	18 53 28.7	+00 31 58	33.6387	-0.2110	G33.641-0.228	33.64-0.21	Image	22 GHz;		56.4	1.2	1.5	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
25	18 55 15.6	+03 04 42	36.1071	0.5539	G36.115+0.554	36.11+0.55	Image	22 GHz;	71.65;81.75	72.4	2.5	5	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
26	19 00 6.7	+03 59 27	37.4717	-0.1065	G37.479-0.105	37.47-0.11	Image	22 GHz;	59.8;63.6	56.7	3.6	5.5	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	SFR		2003 Aug 12-15,19
27	18 58 28.5	+04 20 34	37.5983	0.4174	G37.598+0.425	37.60+0.42	Image	22 GHz;	80.75;91.85	90.2	1.1	5.8	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	SFR		2003 Aug 12-15,19
28	19 00 59.5	+05 42 28	39.0989	0.4838	G39.100+0.491	39.10+0.48	Image	22 GHz;	23.4;30.6	24.4	1.2	3.5	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
29	18 28 10.8	-11 28 44	20.0828	-0.1366	G20.081-0.136	20.08-0.14	Image	22 GHz;	16.9;32.5	23.6	18.8	46.4	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II			2003 Aug 12-15,19
30	18 31 02	-09 49 03	21.8798	0.0128	G21.880+0.014	21.87+0.01	Image	22 GHz;	20.1;24.5	23.2	7	12.6	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
31	18 31 45.6	-09 22 44	22.3515	0.0569	G22.356+0.066	22.35+0.06	Image	22 GHz;		88.3	3.6	3.1	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II			2003 Aug 12-15,19
32	18 34 40.6	-09 00 28	23.0129	-0.4105	G23.010-0.411	23.01-0.41	Image	22 GHz;	66.5;92.5	77	206	534.6	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
33	18 34 38.8	-08 31 37	23.4363	-0.1824	G23.437-0.184	23.44-0.18	Image	22 GHz;		96.4	11	12.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
34	18 36 11.9	-07 12 10	24.7887	0.0858	G24.790+0.083	24.79+0.09	Image	22 GHz;	33;127	112.3	413	1575.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
35	18 40 33.9	-04 57 18	27.2840	0.1527	G27.284+0.149	27.28+0.15	Image	22 GHz;		31.2	6.7	5.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	MIXED		2003 Aug 12-15,19
36	18 46 3.8	-02 39 25	29.9548	-0.0167	G29.956-0.016	29.95-0.02	Image	22 GHz;	80;110.8	99.3	27.6	148.1	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	MIXED		2003 Aug 12-15,19
37	18 47 18.5	-02 06 23	30.5866	-0.0421	G30.589-0.043	30.59-0.04	Image	22 GHz;	-27;45	21.3	1	3.6	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	MIXED		2003 Aug 12-15,19
38	18 47 38.4	-01 57 05	30.7623	-0.0451	G30.758-0.050	30.76-0.05	Image	22 GHz;	67;94	87.1	1	5.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
39	18 47 46.2	-01 54 14	30.8194	-0.0524	G30.817-0.057	30.82-0.05	Image	22 GHz;	58;129	101.4	169	250.2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
40	18 52 7.1	+00 07 56	33.1272	-0.0911	G33.133-0.092	33.13-0.09	Image	22 GHz;		68.7	1.6	2	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19
41	18 59 11.6	+04 12 08	37.5551	0.1938	G37.554+0.201	37.55+0.19	Image	22 GHz;		89.1	1	1.5	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR		2003 Aug 12-15,19

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Line	Telescope	Vstep	RMS	Beam	Detection	Class	Date
	(J2000)	(J2000)	(deg.)	(deg.)			H2O		(km/s)	(Jy)	(arcsec)	Yes/No
1	18 31 6.3	-10 21 37	21.4068	-0.2540	G21.407-0.254	21.41-0.25	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH II	SFR	2003 Aug 12-15,19
2	18 32 32.1	-09 29 10	22.3447	-0.1621	G22.335-0.155	22.34-0.16	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
3	18 32 45.8	-09 24 06	22.4456	-0.1731	G22.435-0.169	22.45-0.17	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II		2003 Aug 12-15,19
4	18 33 47.4	-08 21 37	23.4866	0.0824	G23.484+0.097	23.49+0.08	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II		2003 Aug 12-15,19
5	18 34 51.7	-08 18 16	23.6583	-0.1271	G23.657-0.127	23.66-0.13	22 GHz;	EFF	0.066	0.450	40	-H2O -CH3OH I +CH3OH II +OH -SiO	SFR	2003 Aug 12-15,19
6	18 35 20.8	-07 48 48	24.1495	-0.0076	G24.148-0.009	24.15-0.01	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II		2003 Aug 12-15,19
7	18 36 8.7	-07 30 55	24.5051	-0.0461	G24.494-0.040	24.51-0.05	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
8	18 37 25.2	-07 31 53	24.6360	-0.3342	G24.634-0.324	24.64-0.33	22 GHz;	EFF	0.066	0.450	40	-H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
9	18 36 17.4	-07 08 58	24.8466	0.0902	G24.850+0.087	24.85+0.09	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
10	18 37 15.6	-06 39 05	25.3995	0.1052	G25.411+0.105	25.40+0.11	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
11	18 39 52.8	-05 38 48	26.5910	-0.0126	G26.597-0.024	26.59-0.01	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
12	18 40 42.1	-05 44 21	26.6024	-0.2367	G26.602-0.220	26.60-0.24	22 GHz;	EFF	0.066	0.450	40	-H2O +CH3OH I +CH3OH II -OH	SFR	2003 Aug 12-15,19
13	18 39 51.8	-05 34 52	26.6474	0.0211	G26.647+0.017	26.65+0.02	22 GHz;	EFF	0.066	0.450	40	-H2O +CH3OH II -OH	SFR	2003 Aug 12-15,19
14	18 40 29.6	-05 01 09	27.2188	0.1391	G27.221+0.136	27.22+0.14	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
15	18 44 2.1	-04 34 14	28.0213	-0.4403	G28.011-0.426	28.02-0.44	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH II +OH	SFR	2003 Aug 12-15,19
16	18 42 41	-04 15 21	28.1472	0.0032	G28.147-0.004	28.15+0.00	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
17	18 44 24.9	-04 17 56	28.3062	-0.4004	G28.295-0.377	28.31-0.40	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
18	18 42 57.7	-03 51 59	28.5253	0.1195	G28.525+0.127	28.53+0.12	22 GHz;	EFF	0.066	0.450	40	-H2O -CH3OH I +CH3OH II		2003 Aug 12-15,19
19	18 42 13.6	-03 35 07	28.6915	0.4112	G28.700+0.406	28.69+0.41	22 GHz;	EFF	0.066	0.450	40	-H2O +CH3OH I +CH3OH II		2003 Aug 12-15,19
20	18 44 50	-03 45 23	28.8365	-0.2455	G28.833-0.253	28.84-0.25	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
21	18 44 47.1	-03 44 39	28.8418	-0.2292	G28.833-0.253	28.84-0.23	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
22	18 45 23.1	-03 17 23	29.3145	-0.1549	G29.319-0.162	29.31-0.15	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
23	18 46 1.6	-02 45 26	29.8614	-0.0543	G29.862-0.045	29.86-0.05	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
24	18 46 11.4	-02 39 14	29.9720	-0.0434	G29.975-0.047	29.97-0.04	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
25	18 47 4.2	-02 30 36	30.2003	-0.1733	G30.199-0.169	30.20-0.17	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
26	18 47 9.8	-02 29 38	30.2253	-0.1867	G30.199-0.169	30.22-0.19	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
27	18 47 51.2	-02 23 15	30.3986	-0.2915	G30.400-0.296	30.40-0.29	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
28	18 47 37.2	-02 08 46	30.5868	-0.1295	G30.587-0.130	30.59-0.13	22 GHz;	EFF	0.066	0.450	40	-H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
29	18 46 37.4	-01 45 14	30.8222	0.2710	G30.819+0.273	30.82+0.27	22 GHz;	EFF	0.066	0.450	40	-H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
30	18 51 58.9	+00 07 27	33.1044	-0.0644	G33.093-0.072	33.10-0.06	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH II	SFR	2003 Aug 12-15,19
31	18 52 10.6	+00 25 09	33.3892	0.0268	G33.393+0.010	33.39+0.03	22 GHz;	EFF	0.066	0.450	40	+H2O +CH3OH I +CH3OH II +OH	MIXED	2003 Aug 12-15,19
32	18 58 0.9	+03 23 30	36.6998	0.0850	G36.705+0.096	36.70+0.09	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
33	18 58 59.9	+03 37 40	37.0219	-0.0254	G37.038-0.035	37.02-0.03	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
34	19 00 14.4	+04 02 35	37.5328	-0.1110	G37.546-0.112	37.53-0.11	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
35	19 01 50	+04 23 54	38.0305	-0.3017	G38.038-0.300	38.03-0.30	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II +OH	SFR	2003 Aug 12-15,19
36	19 01 47.6	+04 30 32	38.1242	-0.2423	G38.119-0.229	38.12-0.24	22 GHz;	EFF	0.066	0.450	40	-H2O -CH3OH I +CH3OH II	MIXED	2003 Aug 12-15,19
37	19 01 22.8	+04 39 10	38.2050	-0.0848	G38.203-0.067	38.20-0.08	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19
38	19 01 28.7	+04 42 02	38.2587	-0.0848	G38.258-0.074	38.26-0.08	22 GHz;	EFF	0.066	0.450	40	+H2O -CH3OH I +CH3OH II	SFR	2003 Aug 12-15,19

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DSS colored 2MASS colored WISE colored SDSS color IRAC color I1,I2,I4 GLIMPSE 360 PACS color (70-160 um) SPIRE color (250-500 um) NVSS (1.4GHz) ATLASGAL 870 um ATLASGAL 870 um + Planck Bolocam 1.1 mm UKIDSS K Download UKIDSS K FITS 2MASS K Download 2MASS K FITS