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QIA25 - 5 cm OH Masers in Northern Star Formation Regions

Short title: Qiao et al. (2025)
Authors: Qiao, Hai-HuaOuyang, Xu-JiaShen, Zhi-QiangBreen, Shari L.Yang, KaiChen, XiLi, Juan
Journal: The Astronomical Journal, Volume 169, Issue 1, id.12, 22 pp.
Bibcode:
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Target type: High_mass_SFR
Observations category: polarization
Facility type: single-dish
Transitions: OH_6016,OH_6030,OH_6035,OH_6049

Abstract
We present a 6.0 GHz excited-state OH maser survey toward 155 northern star formation regions utilizing the Shanghai Tianma Radio Telescope. In total, we detect 44 6.0 GHz OH masers, 8 of which are new detections (one at 6016 MHz, two at 6030 MHz, and five at 6035 MHz). Of these 44 detected 6.0 GHz OH masers, 13 sites exhibit 6030 MHz OH masers, all 44 sites show the 6035 MHz transition, one site (G009.620+0.194) has the only 6016 MHz OH maser, and one site (W3(OH)) shows the only 6049 MHz OH maser. The 6016 MHz OH maser is the first OH maser of this transition detected in star formation regions. Investigations of the association between 6030/6035 MHz OH masers with 1665 MHz ground-state OH, 6.7 GHz methanol, and 22 GHz water masers show that 1665 MHz OH masers are good indicators of 6.0 GHz OH masers (29% detection rate), which is consistent with previous results. The majority (more than 77%) of 6030 and 6035 MHz OH masers are associated with 6.7 GHz methanol and/or 22 GHz water masers. Comparison between our spectra with previous spectra, we find that only two sources remain fairly stable since their discoveries. We identify 80 Zeeman pairs in 32 6.0 GHz OH maser sites with typical magnetic field strengths of less than 10 mG. The magnetic field directions derived from these 32 maser sites with Zeeman pairs are consistent with previous work, which indicates that the 6.0 GHz OH masers may be potential tracers of the large-scale Galactic magnetic field.

Abstract

We present a 6.0 GHz excited-state OH maser survey toward 155 northern star formation regions utilizing the Shanghai Tianma Radio Telescope. In total, we detect 44 6.0 GHz OH masers, 8 of which are new detections (one at 6016 MHz, two at 6030 MHz, and five at 6035 MHz). Of these 44 detected 6.0 GHz OH masers, 13 sites exhibit 6030 MHz OH masers, all 44 sites show the 6035 MHz transition, one site (G009.620+0.194) has the only 6016 MHz OH maser, and one site (W3(OH)) shows the only 6049 MHz OH maser. The 6016 MHz OH maser is the first OH maser of this transition detected in star formation regions. Investigations of the association between 6030/6035 MHz OH masers with 1665 MHz ground-state OH, 6.7 GHz methanol, and 22 GHz water masers show that 1665 MHz OH masers are good indicators of 6.0 GHz OH masers (29% detection rate), which is consistent with previous results. The majority (more than 77%) of 6030 and 6035 MHz OH masers are associated with 6.7 GHz methanol and/or 22 GHz water masers. Comparison between our spectra with previous spectra, we find that only two sources remain fairly stable since their discoveries. We identify 80 Zeeman pairs in 32 6.0 GHz OH maser sites with typical magnetic field strengths of less than 10 mG. The magnetic field directions derived from these 32 maser sites with Zeeman pairs are consistent with previous work, which indicates that the 6.0 GHz OH masers may be potential tracers of the large-scale Galactic magnetic field.

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Detection table from Qiao et al. (2025)

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ID	Obs. RA	Obs. Dec	l	b	Group id	grpv	Source name	Image	Descr.	Line	Frequency	V_range	V_peak	F_peak	Telescope	V_step	RMS	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)						OH	(MHz)	(km/s)	(km/s)	(Jy)		(km/s)	(Jy)	(arcsec)	Yes/No		(kpc)
1	17 47 19.9	-28 22 41.1	0.6720	-0.0310	G0.6666-0.0338	G0.6667-0.0337	G000.672-0.031	Image	Descr	6030;	6031	48.7;72.5	72.4	0.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +SiO			18.07.2008
2	17 47 19.9	-28 22 41.1	0.6720	-0.0310	G0.6666-0.0338	G0.6667-0.0337	G000.672-0.031			6035 MHz;	6035	61.9;73.0	72.6	12.9	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +SiO			18.07.2008
	17 47 19.9	-28 22 41.1	0.6720	-0.0310	G0.6666-0.0338	G0.6667-0.0337	G000.672-0.031			6035 MHz;	6035	61.9;73.0	72.6	12.9	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +SiO			18.07.2008
4	18 00 30.3	-24 04 1.4	5.8850	-0.3920	G5.885-0.392	G5.8852-0.3924	G005.885-0.392	Image	Descr	6030;	6031	8.0;9.8	9.4	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	GALAXY		18.07.2008
	18 00 30.3	-24 04 1.4	5.8850	-0.3920	G5.885-0.392	G5.8852-0.3924	G005.885-0.392	Image	Descr	6030;	6031	8.0;9.8	9.4	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2008
6	18 00 30.3	-24 04 1.4	5.8850	-0.3920	G5.885-0.392	G5.8852-0.3924	G005.885-0.392			6035 MHz;	6035	8.8;10.1	9.6	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	GALAXY		18.07.2008
	18 00 30.3	-24 04 1.4	5.8850	-0.3920	G5.885-0.392	G5.8852-0.3924	G005.885-0.392			6035 MHz;	6035	8.8;10.1	9.6	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2008
	18 00 30.3	-24 04 1.4	5.8850	-0.3920	G5.885-0.392	G5.8852-0.3924	G005.885-0.392			6035 MHz;	6035	8.8;10.1	9.6	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2008
	18 00 30.3	-24 04 1.4	5.8850	-0.3920	G5.885-0.392	G5.8852-0.3924	G005.885-0.392			6035 MHz;	6035	8.8;10.1	9.6	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	GALAXY		18.07.2008
10	18 04 53.2	-24 26 40.1	6.0490	-1.4470	G6.049-1.447	G6.0490-1.4471	G006.049-1.447	Image	Descr	6035 MHz;	6035	11.2;11.8	11.6	2.4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I -CH₃OH II +OH	SFR		18.07.2009
	18 04 53.2	-24 26 40.1	6.0490	-1.4470	G6.049-1.447	G6.0490-1.4471	G006.049-1.447	Image	Descr	6035 MHz;	6035	11.2;11.8	11.6	2.4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I -CH₃OH II +OH	SFR		18.07.2009
12	18 06 19	-21 37 33	8.6690	-0.3560	G8.669-0.356	G8.6691-0.3560	G008.669-0.356	Image	Descr	6035 MHz;	6035	38.4;39.7	39.4	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2009
	18 06 19	-21 37 33	8.6690	-0.3560	G8.669-0.356	G8.6691-0.3560	G008.669-0.356	Image	Descr	6035 MHz;	6035	38.4;39.7	39.4	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2009
14	18 06 14.9	-20 31 38.5	9.6200	0.1940	G9.621+0.195	G9.6210+0.1951	G009.620+0.194	Image		6016 MHz;	6016	8.0;8.5	8.2	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2009
15	18 06 14.9	-20 31 38.5	9.6200	0.1940	G9.621+0.195	G9.6210+0.1951	G009.620+0.194			6035 MHz;	6035	-3.4;6.2	4.4	0.5	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2009
	18 06 14.9	-20 31 38.5	9.6200	0.1940	G9.621+0.195	G9.6210+0.1951	G009.620+0.194			6035 MHz;	6035	-3.4;6.2	4.4	0.5	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2009
17	18 10 29.7	-19 55 47.3	10.6260	-0.3870	G10.623-0.384	G10.6236-0.3836	G010.626-0.387	Image	Descr	6035 MHz;	6035	-1.6;0.4	-0.7	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2009
	18 10 29.7	-19 55 47.3	10.6260	-0.3870	G10.623-0.384	G10.6236-0.3836	G010.626-0.387	Image	Descr	6035 MHz;	6035	-1.6;0.4	-0.7	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2009
19	18 09 39.7	-19 21 23.5	11.0330	0.0620	G11.034+0.062	G11.0339+0.0617	G011.033+0.062	Image	Descr	6035 MHz;	6035	22.3;24.4	24.1	1.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
	18 09 39.7	-19 21 23.5	11.0330	0.0620	G11.034+0.062	G11.0339+0.0617	G011.033+0.062	Image	Descr	6035 MHz;	6035	22.3;24.4	24.1	1.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
21	18 12 11.6	-18 41 30.4	11.9040	-0.1420	G11.904-0.141	G11.9040-0.1412	G011.904-0.142	Image	Descr	6035 MHz;	6035	41.4;43.3	42.8	1.1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
	18 12 11.6	-18 41 30.4	11.9040	-0.1420	G11.904-0.141	G11.9040-0.1412	G011.904-0.142	Image	Descr	6035 MHz;	6035	41.4;43.3	42.8	1.1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
23	18 12 39.8	-18 24 18.2	12.2090	-0.1020	G12.209-0.107	G12.2092-0.1021	G012.209-0.102	Image	Descr	6030;	6031	15.8;26.1	17.9	4.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
24	18 12 39.8	-18 24 18.2	12.2090	-0.1020	G12.209-0.107	G12.2092-0.1021	G012.209-0.102			6035 MHz;	6035	15.6;26.1	17.5	10.1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
	18 12 39.8	-18 24 18.2	12.2090	-0.1020	G12.209-0.107	G12.2092-0.1021	G012.209-0.102			6035 MHz;	6035	15.6;26.1	17.5	10.1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
26	18 13 54.8	-18 01 49.7	12.6800	-0.1830	G12.681-0.182	G12.6806-0.1823	G012.680-0.183	Image	Descr	6035 MHz;	6035	57.0;60.5	58.6	1.4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
	18 13 54.8	-18 01 49.7	12.6800	-0.1830	G12.681-0.182	G12.6806-0.1823	G012.680-0.183	Image	Descr	6035 MHz;	6035	57.0;60.5	58.6	1.4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
28	18 20 24.7	-16 11 36.5	15.0340	-0.6770	G15.034-0.677	G15.0346-0.6770	G015.034-0.677	Image	Descr	6030;	6031	21.3;21.7	21.5	4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH			18.07.2011
29	18 20 24.7	-16 11 36.5	15.0340	-0.6770	G15.034-0.677	G15.0346-0.6770	G015.034-0.677			6035 MHz;	6035	21.1;23.9	21.4	33.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH			18.07.2011
	18 20 24.7	-16 11 36.5	15.0340	-0.6770	G15.034-0.677	G15.0346-0.6770	G015.034-0.677			6035 MHz;	6035	21.1;23.9	21.4	33.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH			18.07.2011
31	18 28 10.6	-11 28 45.4	20.0820	-0.1360	G20.081-0.136	G20.0810-0.1358	G020.082-0.136	Image	Descr	6035 MHz;	6035	42.9;43.9	43.2	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2011
	18 28 10.6	-11 28 45.4	20.0820	-0.1360	G20.081-0.136	G20.0810-0.1358	G020.082-0.136	Image	Descr	6035 MHz;	6035	42.9;43.9	43.2	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2011
33	18 27 44.1	-11 14 54.7	20.2360	0.0670	G20.237+0.065	G20.2369+0.0654	G020.236+0.067	Image		6035 MHz;	6035	71.1;72.3	71.3	1.6	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.07.2011
	18 27 44.1	-11 14 54.7	20.2360	0.0670	G20.237+0.065	G20.2369+0.0654	G020.236+0.067	Image		6035 MHz;	6035	71.1;72.3	71.3	1.6	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.07.2011
35	18 35 20.8	-07 48 50.3	24.1490	-0.0080	G24.148-0.009	G24.1480-0.0091	G024.149-0.008	Image	Descr	6035 MHz;	6035	16.3;17.6	17.3	2.2	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.09.2003
	18 35 20.8	-07 48 50.3	24.1490	-0.0080	G24.148-0.009	G24.1480-0.0091	G024.149-0.008	Image	Descr	6035 MHz;	6035	16.3;17.6	17.3	2.2	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.09.2003
37	18 36 11.9	-07 12 8.9	24.7890	0.0860	G24.790+0.084	G24.7898+0.0834	G024.789+0.086	Image	Descr	6035 MHz;	6035	111.9;113.4	113.3	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2003
	18 36 11.9	-07 12 8.9	24.7890	0.0860	G24.790+0.084	G24.7898+0.0834	G024.789+0.086	Image	Descr	6035 MHz;	6035	111.9;113.4	113.3	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2003
39	18 38 03	-06 24 32.5	25.7050	0.0420	G25.710+0.044	G25.7052+0.0418	G025.705+0.042	Image	Descr	6035 MHz;	6035	94.1;95.8	95.5	1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2005
	18 38 03	-06 24 32.5	25.7050	0.0420	G25.710+0.044	G25.7052+0.0418	G025.705+0.042	Image	Descr	6035 MHz;	6035	94.1;95.8	95.5	1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2005
41	18 42 40.9	-04 15 25.2	28.1460	0.0030	G28.147-0.004	G28.1458+0.0030	G028.146+0.003	Image	Descr	6035 MHz;	6035	101.2;101.6	101.4	1.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2010
	18 42 40.9	-04 15 25.2	28.1460	0.0030	G28.147-0.004	G28.1458+0.0030	G028.146+0.003	Image	Descr	6035 MHz;	6035	101.2;101.6	101.4	1.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2010
43	18 42 57.8	-04 14 20.4	28.1940	-0.0510	G28.200-0.050	G28.1939-0.0512	G028.194-0.051	Image	Descr	6030;	6031	94.1;97.5	95	1.1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2010
44	18 42 57.8	-04 14 20.4	28.1940	-0.0510	G28.200-0.050	G28.1939-0.0512	G028.194-0.051			6035 MHz;	6035	93.7;98.4	96.2	2.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2010
	18 42 57.8	-04 14 20.4	28.1940	-0.0510	G28.200-0.050	G28.1939-0.0512	G028.194-0.051			6035 MHz;	6035	93.7;98.4	96.2	2.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		19.04.2010
46	18 51 21.7	-00 12 13.2	32.7420	-0.0760	G32.744-0.076	G32.7439-0.0756	G032.742-0.076	Image	Descr	6035 MHz;	6035	31.1;38.4	33.6	0.5	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2007
	18 51 21.7	-00 12 13.2	32.7420	-0.0760	G32.744-0.076	G32.7439-0.0756	G032.742-0.076	Image	Descr	6035 MHz;	6035	31.1;38.4	33.6	0.5	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2007
48	18 53 18.7	+01 14 59.8	34.2580	0.1530	G34.257+0.153	G34.2573+0.1531	G034.258+0.153	Image		6035 MHz;	6035	55.6;62.3	58.4	0.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2008
	18 53 18.7	+01 14 59.8	34.2580	0.1530	G34.257+0.153	G34.2573+0.1531	G034.258+0.153	Image		6035 MHz;	6035	55.6;62.3	58.4	0.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2008
50	18 54 0.7	+02 01 15.7	35.0240	0.3490	G35.025+0.350	G35.0247+0.3497	G035.024+0.349	Image	Descr	6035 MHz;	6035	45.0;45.7	45.5	2.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2007
	18 54 0.7	+02 01 15.7	35.0240	0.3490	G35.025+0.350	G35.0247+0.3497	G035.024+0.349	Image	Descr	6035 MHz;	6035	45.0;45.7	45.5	2.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2007
52	18 58 13	+01 40 36	35.1970	-0.7430	G35.197-0.743	G35.1970-0.7430	G035.197-0.743	Image	Descr	6035 MHz;	6035	30.3;30.9	30.7	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2007
	18 58 13	+01 40 36	35.1970	-0.7430	G35.197-0.743	G35.1970-0.7430	G035.197-0.743	Image	Descr	6035 MHz;	6035	30.3;30.9	30.7	0.3	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2007
54	18 59 11.6	+04 12 08	37.5550	0.1940	G37.554+0.201	G37.5551+0.1938	G037.555+0.194	Image	Descr	6035 MHz;	6035	85.6;85.8	85.7	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
	18 59 11.6	+04 12 08	37.5550	0.1940	G37.554+0.201	G37.5551+0.1938	G037.555+0.194	Image	Descr	6035 MHz;	6035	85.6;85.8	85.7	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2010
56	19 10 10.9	+09 05 17.1	43.1480	0.0130	G43.166+0.011	G43.1490+0.0131	G043.148+0.013	Image	Descr	6035 MHz;	6035	9.8;18.3	11.2	1.9	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2007
	19 10 10.9	+09 05 17.1	43.1480	0.0130	G43.166+0.011	G43.1490+0.0131	G043.148+0.013	Image	Descr	6035 MHz;	6035	9.8;18.3	11.2	1.9	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2007
58	19 10 21.7	+09 05 3.2	43.1650	-0.0280	G43.166+0.011	G43.1648-0.0283	G043.165-0.028	Image	Descr	6030;	6031	12.9;13.6	13.2	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2012
59	19 10 21.7	+09 05 3.2	43.1650	-0.0280	G43.166+0.011	G43.1648-0.0283	G043.165-0.028			6035 MHz;	6035	9.9;13.8	13.2	0.5	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2012
	19 10 21.7	+09 05 3.2	43.1650	-0.0280	G43.166+0.011	G43.1648-0.0283	G043.165-0.028			6035 MHz;	6035	9.9;13.8	13.2	0.5	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2012
61	19 11 53.9	+09 35 49.5	43.7950	-0.1270	G43.796-0.127	G43.7955-0.1272	G043.795-0.127	Image	Descr	6035 MHz;	6035	38.5;43.8	40.2	0.6	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2013
	19 11 53.9	+09 35 49.5	43.7950	-0.1270	G43.796-0.127	G43.7955-0.1272	G043.795-0.127	Image	Descr	6035 MHz;	6035	38.5;43.8	40.2	0.6	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2013
63	19 13 22.1	+10 50 52.3	45.0710	0.1320	G45.071+0.132	G45.0712+0.1323	G045.071+0.132	Image		6035 MHz;	6035	53.6;55.5	55.3	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR		18.07.2014
	19 13 22.1	+10 50 52.3	45.0710	0.1320	G45.071+0.132	G45.0712+0.1323	G045.071+0.132	Image		6035 MHz;	6035	53.6;55.5	55.3	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR		18.07.2014
65	19 13 27.7	+10 53 36.6	45.1220	0.1330	G45.122+0.132	G45.1224+0.1323	G045.122+0.133	Image	Descr	6030;	6031	53.5;53.8	53.7	0.2	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.07.2014
66	19 13 27.7	+10 53 36.6	45.1220	0.1330	G45.122+0.132	G45.1224+0.1323	G045.122+0.133			6035 MHz;	6035	53.1;55.6	53.7	2.1	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.07.2014
	19 13 27.7	+10 53 36.6	45.1220	0.1330	G45.122+0.132	G45.1224+0.1323	G045.122+0.133			6035 MHz;	6035	53.1;55.6	53.7	2.1	TMRT	0.07	0.100	162	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		18.07.2014
68	19 14 25.7	+11 09 23.2	45.4650	0.0450	G45.465+0.053	G45.4657+0.0452	G045.465+0.045	Image	Descr	6030;	6031	64.3;67.7	66.3	1.4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2015
69	19 14 25.7	+11 09 23.2	45.4650	0.0450	G45.465+0.053	G45.4657+0.0452	G045.465+0.045			6035 MHz;	6035	62.5;68.7	64.8	10.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2015
	19 14 25.7	+11 09 23.2	45.4650	0.0450	G45.465+0.053	G45.4657+0.0452	G045.465+0.045			6035 MHz;	6035	62.5;68.7	64.8	10.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2015
71	19 14 7.3	+11 12 17.5	45.4730	0.1340	G45.473+0.133	G45.4728+0.1335	G045.473+0.134	Image	Descr	6035 MHz;	6035	60.7;60.9	60.7	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2015
	19 14 7.3	+11 12 17.5	45.4730	0.1340	G45.473+0.133	G45.4728+0.1335	G045.473+0.134	Image	Descr	6035 MHz;	6035	60.7;60.9	60.7	0.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		18.07.2015
73	19 23 43.8	+14 30 36.1	49.4900	-0.3870	G49.489-0.385	G49.4897-0.3876	G049.490-0.387	Image	Descr	6030;	6031	52.1;53.0	52.3	2.1	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR_MIXED		18.07.2008
74	19 23 43.8	+14 30 36.1	49.4900	-0.3870	G49.489-0.385	G49.4897-0.3876	G049.490-0.387			6035 MHz;	6035	51.9;63.2	55	7.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR_MIXED		18.07.2008
	19 23 43.8	+14 30 36.1	49.4900	-0.3870	G49.489-0.385	G49.4897-0.3876	G049.490-0.387			6035 MHz;	6035	51.9;63.2	55	7.2	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR_MIXED		18.07.2008
76	20 10 9.3	+31 31 37.7	69.5410	-0.9760	G69.540-0.976	G69.5399-0.9757	G069.541-0.976	Image	Descr	6030;	6031	13.6;14.4	13.8	1.4	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2008
77	20 10 9.3	+31 31 37.7	69.5410	-0.9760	G69.540-0.976	G69.5399-0.9757	G069.541-0.976			6035 MHz;	6035	-0.7;15.6	14.5	10.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2008
	20 10 9.3	+31 31 37.7	69.5410	-0.9760	G69.540-0.976	G69.5399-0.9757	G069.541-0.976			6035 MHz;	6035	-0.7;15.6	14.5	10.7	TMRT	0.07	0.100	162	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		18.07.2008
79	20 01 45.8	+33 32 43.6	70.2930	1.6000	G70.293+1.601	G70.2928+1.6006	G070.293+1.600	Image		6035 MHz;	6035	-20;-18.4	-18.6	0.8	TMRT	0.07	0.100	162	+H₂O +CH₃OH I -CH₃OH II +OH -SiO	SFR_MIXED		18.07.2013
	20 01 45.8	+33 32 43.6	70.2930	1.6000	G70.293+1.601	G70.2928+1.6006	G070.293+1.600	Image		6035 MHz;	6035	-20;-18.4	-18.6	0.8	TMRT	0.07	0.100	162	+H₂O +CH₃OH I -CH₃OH II +OH -SiO	SFR_MIXED		18.07.2013
81	20 01 53.9	+33 34 12.6	70.3290	1.5890	G70.330+1.589	G70.3293+1.5888	G070.329+1.589	Image		6035 MHz;	6035	-21.7;-11.8	-21.6	0.6	TMRT	0.07	0.100	162	+H₂O +OH	SFR		18.07.2014
	20 01 53.9	+33 34 12.6	70.3290	1.5890	G70.330+1.589	G70.3293+1.5888	G070.329+1.589	Image		6035 MHz;	6035	-21.7;-11.8	-21.6	0.6	TMRT	0.07	0.100	162	+H₂O +OH	SFR		18.07.2014
83	20 36 52.3	+41 36 25.5	80.

Display data from paper

QIA25 - 5 cm OH Masers in Northern Star Formation Regions

View as list of objects

Detection table from Qiao et al. (2025)