the Extensive Database of Astrophysical Maser Sources

Abstract
A new methanol maser line at 107 GHz was discovered in five galactic sources. All of them are known Class 2 methanol masers. Toward Class 1 methanol maser sources, the 107-GHz line was found in absorption, or as rather weak quasi-thermal emission sources. The detection of these new methanol masers supports an assumption that the level population inversion is due to overpopulation of some K ladders relative to neighboring ladders.

ID	Obs. RA	Obs. Dec	l	b	Source name	Line	V_peak	FWHM	F_peak	∫F dv	Telescope	Beam
	(J2000)	(J2000)	(deg.)	(deg.)		CH₃OH (class I)	(km/s)	(km/s)	(Jy)	(Jy*km/s)		(arcsec)
1	02 27 4.7	+61 52 25.5	133.9488	1.0651	W 3 (OH)	107 GHz (II)	-45.4(0.1)	4.3(0.2)	10.3(0.4)	46.8(3.0)	ONSALA	35
2	02 27 4.7	+61 52 25.5	133.9488	1.0651	W 3 (OH)	107 GHz (II)	-43.3(0.6)	0.8(0.1)	20.9(0.4)	23.4(1.7)	ONSALA	35
3	05 35 12.2	-05 24 6.4	209.0138	-19.4051	Ori S6	107 GHz (II)	6.6(0.1)	4.2(0.3)	4.5(0.4)	19.5(2.3)	ONSALA	35
4	05 35 14.5	-05 22 29.6	208.9928	-19.3847	Ori KL	107 GHz (II)	7.0(0.1)	9.2(0.3)	23.0(1.0)	226.0(12.0)	ONSALA	35
5	05 35 14.5	-05 22 29.6	208.9928	-19.3847	Ori KL	107 GHz (II)	7.6(0.02)	2.4(0.05)	64.2(1.2)	168.0(4.6)	ONSALA	35
6	05 35 27.5	-05 09 36.5	208.8159	-19.2392	OMC 2	107 GHz (II)	11.4(0.3)	2.0(0.6)	2.5(0.5)	6.0(2.2)	ONSALA	35
7	05 35 27.5	-05 09 36.5	208.8159	-19.2392	OMC 2	107 GHz (II)	14.2(0.6)	2.2(1.4)	1.3(0.4)	3.3(0.7)	ONSALA	35
8	06 08 54.2	+21 38 36.6	188.9460	0.8900	S 252	107 GHz (II)	10.6(0.04)	0.9(0.1)	10.1(1.0)	11.7(2.1)	ONSALA	35
9	18 06 14.8	-20 31 40.2	9.6194	0.1942	G9.62+0.19	107 GHz (II)	-0.8(0.2)	3.8(0.6)	6.0(0.6)	23.4(4.5)	ONSALA	35
10	18 06 14.8	-20 31 40.2	9.6194	0.1942	G9.62+0.19	107 GHz (II)	4.5(0.5)	3.6(1.3)	2.7(0.8)	9.8(4.6)	ONSALA	35
11	18 08 38.4	-19 51 51.7	10.4723	0.0263	W 31 (1)	107 GHz (II)	66.1(0.3)	8.8(0.9)	7.2(0.6)	68.0(8.8)	ONSALA	35
12	18 08 38.4	-19 51 51.7	10.4723	0.0263	W 31 (1)	107 GHz (II)	75.7(0.6)	3.7(1.4)	2.7(0.8)	9.8(4.6)	ONSALA	35
13	18 46 04	-02 39 21.5	29.9560	-0.0168	G29.95-0.02	107 GHz (II)	97.7(0.4)	4.9(1.0)	2.9(0.6)	16.0(4.5)	ONSALA	35
14	18 46 36.3	-01 45 12.1	30.8206	0.2753	G30.82+0.28	107 GHz (II)	102.7(0.2)	1.5(0.4)	3.7(0.8)	5.9(2.0)	ONSALA	35
15	19 01 46.2	+01 13 41.5	35.2038	-1.7380	W 48	107 GHz (II)	41.3(0.03)	2.2(0	1)	15.4(0.4)	ONSALA	35
16	19 01 46.2	+01 13 41.5	35.2038	-1.7380	W 48	107 GHz (II)	45.0(0.04)	2.0(0.1)	11.9(0.4)	25.0(1.5)	ONSALA	35
17	19 23 42.1	+14 30 41.3	49.4879	-0.3800	W 51	107 GHz (II)	56.5(0.4)	6.3(1.0)	1.8(0.2)	12.0(2.4)	ONSALA	35
18	19 23 43.9	+14 30 36.4	49.4901	-0.3871	W 51 (el/e2)	107 GHz (II)	55.6(0.05)	8.9(0.1)	16.2(0.2)	152.0(2.8)	ONSALA	35
19	19 23 43.9	+14 29 25.4	49.4728	-0.3965	W 51 (Metl)	107 GHz (II)	60.6(0.3)	1.9(0.7)	1.2(0.4)	2.0(1.5)	ONSALA	35
20	20 38 36.8	+42 37 59.5	81.8775	0.7838	W 75 (N)	107 GHz (II)	8.4(0.3)	6.2(0.6)	2.9(0.2)	18.0(2.6)	ONSALA	35
21	20 39 0.7	+42 22 50.8	81.7216	0.5722	DR 21 (OH)	107 GHz (II)	-5.7(0.4)	2.7(1.0)	2.0(1.2)	6.0(4.1)	ONSALA	35
22	20 39 0.7	+42 22 50.8	81.7216	0.5722	DR 21 (OH)	107 GHz (II)	-2.3(0.7)	5.0(1.1)	3.9(0.4)	20.6(4.5)	ONSALA	35
23	22 56 18.1	+62 01 49.3	109.8713	2.1141	Cep A	107 GHz (II)	-2.2(0.03)	1.0(0.1)	24.4(1.2)	31.0(2.6)	ONSALA	35
24	23 13 45.4	+61 28 9.7	111.5422	0.7767	NGC 7538	107 GHz (II)	-59.2(0.1)	1.7(0.3)	10.1(1.2)	19.5(3.7)	ONSALA	35
25	23 13 45.4	+61 28 9.7	111.5422	0.7767	NGC 7538	107 GHz (II)	-56.3(0.1)	3.1(0.2)	17.4(1.8)	58.5(7.5)	ONSALA	35
26	23 13 46.4	+61 27 32.7	111.5403	0.7664	NGC 7538 (IRS1)	107 GHz (II)	-57.8(0.4)	4.5(1.0)	1.6(0.4)	5.8(2.0)	ONSALA	35

ID	Obs. RA	Obs. Dec	l	b	Source name	Line	Telescope	Beam
	(J2000)	(J2000)	(deg.)	(deg.)		CH₃OH (class I)		(arcsec)
1	02 25 38.4	+62 05 41.2	133.7120	1.2109	IC 1795	107 GHz (II)	ONSALA	35
2	02 25 53.6	+62 04 10.6	133.7486	1.1979	W 3 (3)	107 GHz (II)	ONSALA	35
3	05 39 27.6	+35 30 58	173.7182	2.3559	G173.59+2.44	107 GHz (II)	ONSALA	35
4	06 07 46.3	-06 23 8.6	213.7050	-12.6043	Mon R2	107 GHz (II)	ONSALA	35
5	06 08 35.4	+20 39 03	189.7788	0.3448	S 252 A	107 GHz (II)	ONSALA	35
6	06 14 36.7	+13 49 41.4	196.4520	-1.6780	S 269	107 GHz (II)	ONSALA	35
7	06 12 56.4	+17 59 53.8	192.5974	-0.0355	S 255	107 GHz (II)	ONSALA	35
8	06 41 9.7	+09 29 34.9	203.3155	2.0549	NGC 2264	107 GHz (II)	ONSALA	35
9	07 32 10	-16 58 14.7	232.6214	0.9962	G232.62+1.00	107 GHz (II)	ONSALA	35
10	15 59 51.1	-01 38 17.6	8.3041	36.3355	S 33	107 GHz (II)	ONSALA	35
11	18 06 19.2	-21 37 37.9	8.6682	-0.3573	G8.67-0.36	107 GHz (II)	ONSALA	35
12	18 14 39.8	-17 51 58.3	12.9095	-0.2610	W 33 (A)	107 GHz (II)	ONSALA	35
13	18 27 42.8	-11 14 29.1	20.2398	0.0751	G20.24+0.08	107 GHz (II)	ONSALA	35
14	18 34 41	-09 00 52.8	23.0075	-0.4151	G23.01-0.41	107 GHz (II)	ONSALA	35
15	18 36 12.8	-07 12 35.1	24.7842	0.0794	W 42	107 GHz (II)	ONSALA	35
16	18 47 35	-02 01 5.9	30.6964	-0.0631	G30.70-0.06	107 GHz (II)	ONSALA	35
17	18 58 12.7	+01 40 36.5	35.1966	-0.7419	G35.19-0.74	107 GHz (II)	ONSALA	35
18	19 11 53.9	+09 35 51.4	43.7954	-0.1267	G43.80-0.13	107 GHz (II)	ONSALA	35
19	19 23 38.2	+14 30 05	49.4716	-0.3709	W 51 (Met5)	107 GHz (II)	ONSALA	35
20	19 23 43.2	+14 31 34.4	49.5031	-0.3772	W 51 (Met4)	107 GHz (II)	ONSALA	35
21	19 23 45.2	+14 29 45.5	49.4802	-0.3984	W 51 (Met3)	107 GHz (II)	ONSALA	35
22	19 23 46.5	+14 29 40.6	49.4815	-0.4037	W 51 (Met2)	107 GHz (II)	ONSALA	35
23	20 09 30.4	+31 26 17	69.3910	-0.9086	G64.9-0.9	107 GHz (II)	ONSALA	35
24	20 38 59.6	+42 19 23.8	81.6738	0.5399	DR 21	107 GHz (II)	ONSALA	35
25	20 58 46	+44 20 27	85.5075	-0.9754	S 117	107 GHz (II)	ONSALA	35
26	21 40 42.4	+58 16 9.7	99.9825	4.1696	IC 1396 (N)	107 GHz (II)	ONSALA	35
27	22 20 13.1	+03 58 14.6	67.4803	-42.0606	S 140	107 GHz (II)	ONSALA	35
28	23 13 42.1	+61 30 37.7	111.5511	0.8174	S 158	107 GHz (II)	ONSALA	35
29	23 13 44.8	+61 26 50.7	111.5330	0.7567	NGC 7538 (S)	107 GHz (II)	ONSALA	35

IRAS source	IRAS coordinates (RA, Dec)	IRAS flux density (F12,F25,F60,F100)
2MASS source	2MASS coordinates (RA, Dec)	2MASS magnituted (J,H,K)

Variable star	Variable star parameters	Star Formation Region name	Star Formation Region parameters
WISE source	WISE coordinates (RA, Dec)	WISE magnitudes (w1, w2, w3, w4)
Akari IRC source	Akari IRC coordinates (RA, Dec)	Akari IRC fluxes (S09, S18)
Akari FIS source	Akari FIS coordinates (RA, Dec)	Akari FIS fluxes (S65, S90, S140, S160)

DSS (optical)	2MASS (JHK)	WISE (4-22 um)	IRAC (3-8 um)	GLIMPSE 360 (3.6-4.5 um)	PACS color (70-160 um)	SPIRE color (250-500 um)
AKARI color (60-160 um)	NVSS (1.4 GHz)	SDSS (optical+NIR)	Image size: arcsec (default is 120 arcsec)
			Image size: arcsec (default is 120 arcsec)

Display data from paper

VAL95B - The discovery of methanol masers at 107 GHz

View paper statistics

Detection table from Valtts et al. (1995b)

Non-detection table from Valtts et al. (1995b)