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SZY04 - Observations of hydroxyl ground state transitions in a complete sample of methanol sources

Short title: Szymczak & Garard (2004)
Authors: Szymczak, M.Gerard, E.
Journal: Astronomy and Astrophysics, v.414, p.235-243 (2004)
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Target type: Known_Class_II
Observations category: polarization
Facility type: single-dish
Transitions: OH_1612,OH_1665,OH_1667,OH_1720

Abstract
High sensitivity observations of all four transitions of the ground state 2 Π 3/2 , J = 3/2 of OH in both senses of circular polarization have been carried out with the Nancay radio telescope. The sample was a set of 100 star forming regions detected in a recent unbiased survey of 6668 MHz CH3OH masers. OH maser emission was found in 55 objects of which 31 were not previously catalogued. The 1665 MHz line was seen in almost all OH maser sources and was accompanied by the 1667 MHz line in about 75% of cases. Respectively 7% and 11% of OH 1665 MHz masers were accompanied by maser lines at 1612 and 1720 MHz. These two satellite line masers never occurred simultaneously in the same source nor at the same radial velocity, suggesting mutually exclusive physical conditions as predicted by models. OH maser emission usually shared the same velocity range as the 6668 MHz CH 3 OH maser. The intensity ratio of the 6668 MHz and 1665 MHz lines clearly divides the sample into methanol-and hydroxyl-rich sources and could be controlled by the abundance of maser molecules and the kinetic temperature. The OH maser emission was substantially polarized with a mean fractional circular polarization of 0.30 and Zeeman pair candidates were found in 15 targets. 36 sources were found in OH absorption at the main lines and 24 of them were also accompanied by OH maser emission. OH absorption features were blueshifted with regard to the related OH masers, indicating that they were formed in front of the central continuum sources. Absorption at 1720 MHz was always accompanied by emission at 1612 MHz and vice versa. The behaviour of stimulated emission and absorption in both satellite lines was thus conjugated and the 1720 MHz emission features seem to be signatures of regions of low hydrogen density and OH column density. The correlation of OH and CH 3 OH flux densities with the IRAS flux densities found for our sample appears to support pumping schemes of both molecules by infrared photons. Statistics of masers in the sample appear to be consistent with the scenario that the CH 3 OH masers appeared earlier than the OH masers.	Comments: This work gives no velocities and no flux densities. vrad and vexp for IRAS 17253-2831 was taken from Zijlstra et al. (2001)

Abstract

High sensitivity observations of all four transitions of the ground state 2 Π 3/2 , J = 3/2 of OH in both senses of circular polarization have been carried out with the Nancay radio telescope. The sample was a set of 100 star forming regions detected in a recent unbiased survey of 6668 MHz CH3OH masers. OH maser emission was found in 55 objects of which 31 were not previously catalogued. The 1665 MHz line was seen in almost all OH maser sources and was accompanied by the 1667 MHz line in about 75% of cases. Respectively 7% and 11% of OH 1665 MHz masers were accompanied by maser lines at 1612 and 1720 MHz. These two satellite line masers never occurred simultaneously in the same source nor at the same radial velocity, suggesting mutually exclusive physical conditions as predicted by models. OH maser emission usually shared the same velocity range as the 6668 MHz CH 3 OH maser. The intensity ratio of the 6668 MHz and 1665 MHz lines clearly divides the sample into methanol-and hydroxyl-rich sources and could be controlled by the abundance of maser molecules and the kinetic temperature. The OH maser emission was substantially polarized with a mean fractional circular polarization of 0.30 and Zeeman pair candidates were found in 15 targets. 36 sources were found in OH absorption at the main lines and 24 of them were also accompanied by OH maser emission. OH absorption features were blueshifted with regard to the related OH masers, indicating that they were formed in front of the central continuum sources. Absorption at 1720 MHz was always accompanied by emission at 1612 MHz and vice versa. The behaviour of stimulated emission and absorption in both satellite lines was thus conjugated and the 1720 MHz emission features seem to be signatures of regions of low hydrogen density and OH column density. The correlation of OH and CH 3 OH flux densities with the IRAS flux densities found for our sample appears to support pumping schemes of both molecules by infrared photons. Statistics of masers in the sample appear to be consistent with the scenario that the CH 3 OH masers appeared earlier than the OH masers.

Comments:
This work gives no velocities and no flux densities. vrad and vexp for IRAS 17253-2831 was taken from Zijlstra et al. (2001)

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Detection table from Szymczak & Garard (2004)

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Image	Line	Frequency	V_peak	FWHM	F_peak	∫F dv	Telescope	V_step	RMS	Beam	Detection	Class	Dist. (parallax)
	(J2000)	(J2000)	(deg.)	(deg.)				OH	(MHz)	(km/s)	(km/s)	(Jy)	(Jy*km/s)		(km/s)	(Jy)	(arcsec)	Yes/No		(kpc)
1	18 28 10.6	-11 28 46.9	20.0817	-0.1363	G20.081-0.136	20.08-0.14	Image	1665 MHz;	1665	46.6	9.5	7.05	11.6	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
2	18 28 10.6	-11 28 46.9	20.0817	-0.1363	G20.081-0.136	20.08-0.14	Image	1667 MHz;	1667	47.8	9.5	0.5	0.87	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
3	18 27 44.1	-11 14 53.9	20.2362	0.0672	G20.237+0.067	20.24+0.07	Image	1665 MHz;	1665	73.6	9.3	2.36	5.73	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
4	18 27 44.1	-11 14 53.9	20.2362	0.0672	G20.237+0.067	20.24+0.07	Image	1667 MHz;	1667	72.8	10.3	0.74	1.11	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
5	18 30 36.5	-10 06 43.9	21.5701	-0.0309	G21.563-0.031	21.57-0.03	Image	1665 MHz;	1665	119.9	3.8	0.23	0.38	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
6	18 31 1.9	-09 49 0.8	21.8801	0.0135	G21.880+0.014	21.87+0.01	Image	1665 MHz;	1665	22.1	3.5	0.38	0.35	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
	18 31 1.9	-09 49 0.8	21.8801	0.0135	G21.880+0.014	21.87+0.01	Image	1665 MHz;	1665	23	11.2	-0.11	-0.62	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
8	18 31 1.9	-09 49 0.8	21.8801	0.0135	G21.880+0.014	21.87+0.01	Image	1667 MHz;	1667	23	5.2	-0.13	-0.29	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
9	18 30 35.7	-09 34 26	22.0457	0.2214	G22.039+0.222	22.05+0.22	Image	1665 MHz;	1665	51.5	10.4	-0.13	-0.63	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
10	18 30 35.7	-09 34 26	22.0457	0.2214	G22.039+0.222	22.05+0.22	Image	1667 MHz;	1667	51.1	8.4	-0.08	-0.4	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
11	18 32 32.1	-09 29 10	22.3447	-0.1621	G22.338-0.157	22.34-0.16	Image	1665 MHz;	1665	25.4	1	0.32	0.14	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
12	18 31 45.6	-09 22 44	22.3515	0.0569	G22.355+0.065	22.35+0.06	Image	1665 MHz;	1665	78	5.7	0.91	0.52	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
13	18 31 45.6	-09 22 44	22.3515	0.0569	G22.355+0.065	22.35+0.06	Image	1667 MHz;	1667	83	8.4	0.27	0.61	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
	18 31 45.6	-09 22 44	22.3515	0.0569	G22.355+0.065	22.35+0.06	Image	1667 MHz;	1667	82.6	10.6	-0.13	-0.63	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
15	18 32 45.8	-09 24 6.1	22.4456	-0.1731	G22.435-0.169	22.45-0.17	Image	1665 MHz;	1665	25.4	11.4	7.82	6.84	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
16	18 32 45.8	-09 24 6.1	22.4456	-0.1731	G22.435-0.169	22.45-0.17	Image	1667 MHz;	1667	33.9	10.8	0.17	0.51	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
17	18 34 39.9	-09 00 43.9	23.0076	-0.4099	G23.010-0.410	23.01-0.41	Image	1665 MHz;	1665	67.6	15.6	2.74	6.68	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
18	18 34 39.9	-09 00 43.9	23.0076	-0.4099	G23.010-0.410	23.01-0.41	Image	1667 MHz;	1667	74.7	16.5	4.46	4.63	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
19	18 34 39.9	-09 00 43.9	23.0076	-0.4099	G23.010-0.410	23.01-0.41	Image	1665 MHz;	1665	75.6	10.6	-0.34	-1.96	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
20	18 34 39.9	-09 00 43.9	23.0076	-0.4099	G23.010-0.410	23.01-0.41	Image	1667 MHz;	1667	75.9	13	-0.42	-2.49	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
21	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1665 MHz;	1665	88.9	3.1	1	1.22	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
22	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1667 MHz;	1667	89.7	4.4	0.43	0.24	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
23	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1665 MHz;	1665	76.8	10.8	-0.52	-2.96	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
24	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1667 MHz;	1667	76.8	14.5	-0.62	-4.29	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
25	18 34 30.8	-08 42 42.1	23.2571	-0.2382	G23.257-0.240	23.26-0.24	Image	1665 MHz;	1665	56	13.6	0.92	1.29	Nancay	0.27	0.040	210	+H₂O +CH₃OH II +OH	SFR
26	18 34 30.8	-08 42 42.1	23.2571	-0.2382	G23.257-0.240	23.26-0.24	Image	1667 MHz;	1667	54.8	21	1.57	1.15	Nancay	0.27	0.040	210	+H₂O +CH₃OH II +OH	SFR
27	18 34 30.8	-08 42 42.1	23.2571	-0.2382	G23.257-0.240	23.26-0.24	Image	1665 MHz;	1665	61.5	11	-0.29	-1.51	Nancay	0.27	0.040	210	+H₂O +CH₃OH II +OH	SFR
28	18 34 30.8	-08 42 42.1	23.2571	-0.2382	G23.257-0.240	23.26-0.24	Image	1667 MHz;	1667	59	21	-0.35	-3.47	Nancay	0.27	0.040	210	+H₂O +CH₃OH II +OH	SFR
29	18 33 13.1	-08 23 56	23.3871	0.1900	G23.389+0.185	23.39+0.19	Image	1665 MHz;	1665	73.5	6	0.34	0.61	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
30	18 33 13.1	-08 23 56	23.3871	0.1900	G23.389+0.185	23.39+0.19	Image	1667 MHz;	1667	74.4	0.9	0.32	0.14	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
31	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1665 MHz;	1665	106.1	20.5	7.91	9.66	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
32	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1667 MHz;	1667	103.3	21	1.43	4.39	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
33	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1665 MHz;	1665	98.3	12.6	-0.86	-4.6	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
34	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1667 MHz;	1667	98.8	12	-1.31	-6.76	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
35	18 33 47.4	-08 21 37.1	23.4865	0.0824	G23.487+0.082	23.49+0.08	Image	1665 MHz;	1665	98.5	1.4	0.35	0.15	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
36	18 33 47.4	-08 21 37.1	23.4865	0.0824	G23.487+0.082	23.49+0.08	Image	1667 MHz;	1667	88.8	0.9	0.2	0.09	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
37	18 33 47.4	-08 21 37.1	23.4865	0.0824	G23.487+0.082	23.49+0.08	Image	1665 MHz;	1665	86.7	16.2	-0.22	-1.74	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
38	18 33 47.4	-08 21 37.1	23.4865	0.0824	G23.487+0.082	23.49+0.08	Image	1667 MHz;	1667	87.1	20.4	-0.23	-2.48	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
39	18 34 51.7	-08 18 15.8	23.6583	-0.1271	G23.657-0.127	23.66-0.13	Image	1665 MHz;	1665	79.8	12.3	-0.17	-1.29	Nancay	0.27	0.040	210	-H₂O -CH₃OH I +CH₃OH II +OH -SiO	SFR
40	18 34 51.7	-08 18 15.8	23.6583	-0.1271	G23.657-0.127	23.66-0.13	Image	1667 MHz;	1667	79.6	11.2	-0.25	-1.45	Nancay	0.27	0.040	210	-H₂O -CH₃OH I +CH₃OH II +OH -SiO	SFR
41	18 35 22.9	-08 01 10.9	23.9703	-0.1103	G23.968-0.110	23.97-0.11	Image	1665 MHz;	1665	72.5	7.2	0.29	0.34	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
42	18 35 22.9	-08 01 10.9	23.9703	-0.1103	G23.968-0.110	23.97-0.11	Image	1667 MHz;	1667	65.8	2.2	0.44	0.34	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
43	18 35 20.8	-07 48 47.9	24.1496	-0.0076	G24.150-0.009	24.15-0.01	Image	1665 MHz;	1665	20.3	8.8	0.8	1.59	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
44	18 35 9.4	-07 34 58.1	24.3325	0.1403	G24.329+0.144	24.33+0.14	Image	1665 MHz;	1665	113	20.6	-0.23	-2.11	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
45	18 35 9.4	-07 34 58.1	24.3325	0.1403	G24.329+0.144	24.33+0.14	Image	1667 MHz;	1667	112.3	22.4	-0.17	-2.21	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
46	18 36 8.7	-07 30 55.1	24.5051	-0.0461	G24.497-0.040	24.51-0.05	Image	1665 MHz;	1665	108.7	2.9	1.5	1.17	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
47	18 36 8.7	-07 30 55.1	24.5051	-0.0461	G24.497-0.040	24.51-0.05	Image	1667 MHz;	1667	116.3	9.9	1.21	2.01	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
48	18 36 8.7	-07 30 55.1	24.5051	-0.0461	G24.497-0.040	24.51-0.05	Image	1665 MHz;	1665	109.2	11.7	-0.11	-0.57	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
49	18 36 8.7	-07 30 55.1	24.5051	-0.0461	G24.497-0.040	24.51-0.05	Image	1667 MHz;	1667	109.2	14.3	-0.24	-1.45	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
50	18 34 53	-07 19 10.9	24.5349	0.3216	G24.535+0.322	24.53+0.32	Image	1665 MHz;	1665	111.2	24.6	-0.18	-2.48	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
51	18 27 44.1	-11 14 53.9	20.2362	0.0672	G20.237+0.067	20.24+0.07	Image	1720 MHz;	1720	75.2	2.2	0.62	0.56	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
52	18 30 36.5	-10 06 43.9	21.5701	-0.0309	G21.563-0.031	21.57-0.03	Image	1612 MHz;	1612	113.9	5.9	0.12	0.28	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
53	18 31 1.9	-09 49 0.8	21.8801	0.0135	G21.880+0.014	21.87+0.01	Image	1612 MHz;	1612	23.8	3.9	0.2	0.31	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
54	18 31 1.9	-09 49 0.8	21.8801	0.0135	G21.880+0.014	21.87+0.01	Image	1720 MHz;	1720	23	7.1	-0.09	-0.24	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
55	18 34 39.9	-09 00 43.9	23.0076	-0.4099	G23.010-0.410	23.01-0.41	Image	1612 MHz;	1612	78.2	6	0.2	0.54	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
56	18 34 39.9	-09 00 43.9	23.0076	-0.4099	G23.010-0.410	23.01-0.41	Image	1720 MHz;	1720	78.3	12	-0.17	-0.46	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
57	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1612 MHz;	1612	75.2	6.7	-0.25	-0.91	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
58	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1720 MHz;	1720	74.9	4	0.1	0.32	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
59	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1612 MHz;	1612	78.3	4.5	0.31	0.74	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
60	18 34 54.5	-08 50 3.8	23.1932	-0.3814	G23.193-0.380	23.19-0.38	Image	1720 MHz;	1720	73	5	-0.32	-0.75	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
61	18 33 13.1	-08 23 56	23.3871	0.1900	G23.389+0.185	23.39+0.19	Image	1612 MHz;	1612	75.3	12	0.24	1.15	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
62	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1612 MHz;	1612	96.3	9.3	-0.43	-1.79	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
63	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1720 MHz;	1720	95.7	4.2	0.29	0.6	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
64	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1612 MHz;	1612	103.3	6.2	0.19	0.59	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
65	18 34 39	-08 31 36.1	23.4369	-0.1830	G23.437-0.183	23.44-0.18	Image	1720 MHz;	1720	101.4	9.8	-0.22	-1.09	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
66	18 35 22.9	-08 01 10.9	23.9703	-0.1103	G23.968-0.110	23.97-0.11	Image	1612 MHz;	1612	76.3	6	0.2	0.5	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED
67	18 35 9.4	-07 34 58.1	24.3325	0.1403	G24.329+0.144	24.33+0.14	Image	1612 MHz;	1612	113.2	15.4	-0.23	-1.47	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
68	18 35 9.4	-07 34 58.1	24.3325	0.1403	G24.329+0.144	24.33+0.14	Image	1720 MHz;	1720	112.9	14.5	0.19	1.19	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
69	18 36 8.7	-07 30 55.1	24.5051	-0.0461	G24.497-0.040	24.51-0.05	Image	1612 MHz;	1612	110.7	6.4	0.13	0.32	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
70	18 36 8.7	-07 30 55.1	24.5051	-0.0461	G24.497-0.040	24.51-0.05	Image	1720 MHz;	1720	110.7	6.4	-0.1	-0.26	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
71	18 34 53	-07 19 10.9	24.5349	0.3216	G24.535+0.322	24.53+0.32	Image	1612 MHz;	1612	112.4	15.5	-0.26	-1.71	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
72	18 34 53	-07 19 10.9	24.5349	0.3216	G24.535+0.322	24.53+0.32	Image	1720 MHz;	1720	112.6	16.3	0.21	1.36	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
73	18 37 25.2	-07 31 53	24.6360	-0.3342	G24.634-0.324	24.64-0.33	Image	1612 MHz;	1612	43.1	6.2	0.15	0.53	Nancay	0.27	0.040	210	-H₂O -CH₃OH I +CH₃OH II +OH	SFR
74	18 37 25.2	-07 31 53	24.6360	-0.3342	G24.634-0.324	24.64-0.33	Image	1720 MHz;	1720	43	6.1	-0.17	-0.37	Nancay	0.27	0.040	210	-H₂O -CH₃OH I +CH₃OH II +OH	SFR
75	18 36 11.9	-07 12 10.1	24.7887	0.0858	G24.790+0.084	24.79+0.09	Image	1612 MHz;	1612	110.4	12	0.4	1.87	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
76	18 36 11.9	-07 12 10.1	24.7887	0.0858	G24.790+0.084	24.79+0.09	Image	1720 MHz;	1720	109.7	10.5	-0.29	-1.29	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
77	18 37 18.3	-06 38 38.4	25.4113	0.0985	G25.411+0.105	25.40+0.11	Image	1612 MHz;	1612	95.5	4.4	0.3	0.52	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
78	18 42 40.9	-04 15 25.9	28.1458	0.0030	G28.147-0.004	28.15+0.00	Image	1720 MHz;	1720	102.2	1.5	0.71	0.26	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
79	18 42 40.9	-04 15 25.9	28.1458	0.0030	G28.147-0.004	28.15+0.00	Image	1612 MHz;	1612	98.4	4.1	0.1	0.14	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
80	18 42 40.9	-04 15 25.9	28.1458	0.0030	G28.147-0.004	28.15+0.00	Image	1720 MHz;	1720	98.3	6.1	-0.1	-0.27	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
81	18 42 57.8	-04 14 21.1	28.1939	-0.0512	G28.200-0.049	28.19-0.05	Image	1612 MHz;	1612	96.6	10.6	0.37	1.62	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
82	18 42 57.8	-04 14 21.1	28.1939	-0.0512	G28.200-0.049	28.19-0.05	Image	1720 MHz;	1720	97.6	7.8	-0.19	-0.62	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
83	18 44 24.5	-04 17 44.5	28.3082	-0.3974	G28.295-0.377	28.31-0.40	Image	1612 MHz;	1612	82.8	3.7	0.1	0.16	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
84	18 44 24.5	-04 17 44.5	28.3082	-0.3974	G28.295-0.377	28.31-0.40	Image	1720 MHz;	1720	83.7	10.2	-0.1	-0.37	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
85	18 42 54.5	-04 00 04	28.3994	0.0698	G28.399+0.070	28.40+0.07	Image	1612 MHz;	1612	73	1.7	0.45	0.18	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
	18 42 54.5	-04 00 04	28.3994	0.0698	G28.399+0.070	28.40+0.07	Image	1612 MHz;	1612	78.2	16	-0.96	-6.07	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
87	18 42 54.5	-04 00 04	28.3994	0.0698	G28.399+0.070	28.40+0.07	Image	1720 MHz;	1720	77.7	15.2	0.65	3.78	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
88	18 44 50	-03 45 23	28.8364	-0.2455	G28.832-0.253	28.84-0.25	Image	1612 MHz;	1612	87.8	9.5	0.25	2.39	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
89	18 44 50	-03 45 23	28.8364	-0.2455	G28.832-0.253	28.84-0.25	Image	1720 MHz;	1720	88	12.1	-0.17	-0.81	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
90	18 45 59.9	-02 45 11.9	29.8617	-0.0462	G29.862-0.045	29.86-0.05	Image	1612 MHz;	1612	100.6	7	0.14	0.47	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
91	18 45 59.9	-02 45 11.9	29.8617	-0.0462	G29.862-0.045	29.86-0.05	Image	1720 MHz;	1720	100.6	7.9	-0.15	-0.56	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
92	18 46 11.4	-02 39 14	29.9720	-0.0434	G29.975-0.047	29.97-0.04	Image	1612 MHz;	1612	101.5	7.6	0.56	1.71	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	GALAXY
93	18 46 11.4	-02 39 14	29.9720	-0.0434	G29.975-0.047	29.97-0.04	Image	1720 MHz;	1720	101.1	7.8	-0.5	-1.69	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	GALAXY
94	18 47 38.9	-01 57 24.8	30.7584	-0.0495	G30.760-0.050	30.76-0.05	Image	1612 MHz;	1612	91.2	9.5	-3	-33.44	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
95	18 47 38.9	-01 57 24.8	30.7584	-0.0495	G30.760-0.050	30.76-0.05	Image	1720 MHz;	1720	90.3	8.3	1.55	18.47	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
96	18 47 38.9	-01 57 24.8	30.7584	-0.0495	G30.760-0.050	30.76-0.05	Image	1612 MHz;	1612	96	7.8	2.9	27.56	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
97	18 47 38.9	-01 57 24.8	30.7584	-0.0495	G30.760-0.050	30.76-0.05	Image	1720 MHz;	1720	95.5	9	-2.6	-24.17	Nancay	0.27	0.040	210	+H₂O +CH₃OH I +CH₃OH II +OH	SFR
98	18 46 36.4	-01 45 24.1	30.8178	0.2734	G30.819+0.273	30.82+0.27	Image	1720 MHz;	1720	103.1	3.4	0.34	0.76	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
99	18 46 36.4	-01 45 24.1	30.8178	0.2734	G30.819+0.273	30.82+0.27	Image	1612 MHz;	1612	99	15.8	0.22	1.5	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR
100	18 46 36.4	-01 45 24.1	30.8178	0.2734	G30.819+0.273	30.82+0.27	Image	1720 MHz;	1720	98.6	15.9	-0.31	-3.08	Nancay	0.27	0.040	210	+H₂O -CH₃OH I +CH₃OH II +OH	SFR

Non-detection table from Szymczak & Garard (2004)