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PIH11B - Very Large Array Monitoring of 1720 MHz OH Masers toward the Galactic Center

Short title: Pihlstrom et al. (2011)
Authors: Pihlstrom, Y. M.Sjouwerman, L. O.Mesler, R. A.
Journal: The Astrophysical Journal, Volume 740, Issue 2, article id. 66, 7 pp. (2011).
Bibcode:
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Target type: High_mass_SFR
Observations category: SF.general
Facility type: interferometer
Transitions: OH_1720

Abstract
We present the first variability study of the 1720 MHz OH masers located in the Galactic center. Most of these masers are associated with the interaction between the supernova remnant Sgr A East and the interstellar medium, but a few masers are associated with the circumnuclear disk (CND). The monitoring program covered five epochs and a timescale of 20-195 days, during which no masers disappeared and no new masers appeared. All masers have previously been detected in a single-epoch observation about one year prior to the start of the monitoring experiment, implying relatively stable conditions for the 1720 MHz OH masers. No extreme variability was detected. The masers associated with the northeastern interaction region between the supernova remnant and the +50 km s^-1 molecular cloud show the highest level of variability. This can be explained with the +50 km s^-1 molecular cloud being located behind the supernova remnant and with a region of high OH absorbing column density along the line of sight. Possibly, the supernova remnant provides additional turbulence to the gas in this region, through which the maser emission must travel. The masers in the southern interaction region are located on the outermost edge of Sgr A East, the line of sight of which is not covered by either absorbing OH gas or a supernova remnant, in agreement with the much lower variability level observed. Similarly, the masers associated with the CND show little variability, consistent with those arising through collisions between relatively large clumps of gas in the CND and no significant amount of turbulent gas along the line of sight.

Abstract

We present the first variability study of the 1720 MHz OH masers located in the Galactic center. Most of these masers are associated with the interaction between the supernova remnant Sgr A East and the interstellar medium, but a few masers are associated with the circumnuclear disk (CND). The monitoring program covered five epochs and a timescale of 20-195 days, during which no masers disappeared and no new masers appeared. All masers have previously been detected in a single-epoch observation about one year prior to the start of the monitoring experiment, implying relatively stable conditions for the 1720 MHz OH masers. No extreme variability was detected. The masers associated with the northeastern interaction region between the supernova remnant and the +50 km s^-1 molecular cloud show the highest level of variability. This can be explained with the +50 km s^-1 molecular cloud being located behind the supernova remnant and with a region of high OH absorbing column density along the line of sight. Possibly, the supernova remnant provides additional turbulence to the gas in this region, through which the maser emission must travel. The masers in the southern interaction region are located on the outermost edge of Sgr A East, the line of sight of which is not covered by either absorbing OH gas or a supernova remnant, in agreement with the much lower variability level observed. Similarly, the masers associated with the CND show little variability, consistent with those arising through collisions between relatively large clumps of gas in the CND and no significant amount of turbulent gas along the line of sight.

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Detection table from Pihlstrom et al. (2011)

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ID	Obs. RA	Obs. Dec	l	b	Group id	grpv	Source name	Line	Frequency	V_peak	FWHM	∫F dv	Telescope	Configuration	V_step	RMS	Beam	Detection	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)				OH	(MHz)	(km/s)	(km/s)	(Jy*km/s)			(km/s)	(mJy/beam)	(arcsec)	Yes/No	(kpc)
1	17 45 37	-29 01 20.9	359.9259	-0.0442	G359.9260-0.0448	G359.9260-0.0448	359.925-0.044	1720 MHz;	1720	-104	4.2	0.23	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
2	17 45 37.3	-29 01 22.4	359.9261	-0.0454	G359.9260-0.0448	G359.9260-0.0448	359.926-0.045	1720 MHz;	1720	-117	2.1	0.08	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
3	17 45 38.5	-29 01 17.4	359.9295	-0.0483	G359.9295-0.0483	G359.9311-0.0450	359.929-0.048	1720 MHz;	1720	-141	2.1	0.2	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
4	17 45 38.8	-28 59 43	359.9526	-0.0358	G359.9520-0.0358	G359.9532-0.0359	359.952-0.035	1720 MHz;	1720	42	4.2	1.68	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
5	17 45 39.7	-28 58 46.6	359.9677	-0.0304	G359.9677-0.0304	G359.9677-0.0304	359.967-0.030	1720 MHz;	1720	100	2.1	0.22	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
6	17 45 40.4	-28 59 41.7	359.9559	-0.0405	G359.9541-0.0406	G359.9532-0.0359	359.955-0.040	1720 MHz;	1720	132	8.5	5.54	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
7	17 45 40.4	-28 59 21.1	359.9608	-0.0376	G359.9608-0.0376	G359.9608-0.0376	359.960-0.037	1720 MHz;	1720	32	4.2	0.49	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
8	17 45 41.6	-29 01 47.9	359.9282	-0.0625	G359.9282-0.0625	G359.9321-0.0654	359.928-0.062	1720 MHz;	1720	55	6.3	0.93	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
9	17 45 42.1	-28 59 9.5	359.9668	-0.0412	G359.9657-0.0425	G359.9668-0.0427	359.966-0.041	1720 MHz;	1720	34	2.1	0.21	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
10	17 45 42.8	-29 01 41.4	359.9321	-0.0654	G359.9325-0.0655	G359.9321-0.0654	359.932-0.065	1720 MHz;	1720	62	4.2	0.24	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
11	17 45 42.8	-29 01 42.6	359.9318	-0.0655	G359.9325-0.0655	G359.9321-0.0654	359.931-0.065	1720 MHz;	1720	49	2.1	0.19	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
12	17 45 43	-29 01 37.9	359.9334	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.933-0.065	1720 MHz;	1720	60	2.1	0.2	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
13	17 45 43.3	-29 01 35.3	359.9344	-0.0659	G359.9325-0.0655	G359.9321-0.0654	359.934-0.065	1720 MHz;	1720	53	4.2	0.78	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
14	17 45 43.3	-29 01 32.7	359.9351	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	62	4.2	0.53	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
15	17 45 43.5	-29 01 32.2	359.9355	-0.0660	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	57	4.2	1.63	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
16	17 45 44.3	-29 01 19.3	359.9402	-0.0669	G359.9402-0.0669	G359.9402-0.0669	359.940-0.066	1720 MHz;	1720	66	6.3	13.82	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
17	17 45 48.5	-28 59 40.4	359.9717	-0.0657	G359.9717-0.0657	G359.9831-0.0675	359.971-0.065	1720 MHz;	1720	42	2.1	0.2	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
18	17 45 48.6	-28 59 25.5	359.9753	-0.0637	G359.9832-0.0675	G359.9831-0.0675	359.975-0.063	1720 MHz;	1720	45	4.2	0.45	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
19	17 45 48.7	-29 00 25.7	359.9613	-0.0728	G359.9613-0.0728	G359.9613-0.0728	359.961-0.072	1720 MHz;	1720	60	2.1	0.25	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
20	17 45 49.7	-28 59 42.4	359.9734	-0.0696	G359.9832-0.0675	G359.9831-0.0675	359.973-0.069	1720 MHz;	1720	68	4.2	0.36	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
21	17 45 49.8	-28 59 53.7	359.9709	-0.0715	G359.9832-0.0675	G359.9831-0.0675	359.970-0.071	1720 MHz;	1720	64	2.1	0.23	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
22	17 45 50	-28 59 19.6	359.9794	-0.0673	G359.9832-0.0675	G359.9831-0.0675	359.979-0.067	1720 MHz;	1720	53	2.1	0.3	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
23	17 45 50.1	-28 59 29.7	359.9772	-0.0690	G359.9832-0.0675	G359.9831-0.0675	359.977-0.068	1720 MHz;	1720	55	2.1	0.14	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
24	17 45 50.2	-28 59 58.4	359.9707	-0.0736	G359.9832-0.0675	G359.9831-0.0675	359.970-0.073	1720 MHz;	1720	62	2.1	0.13	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
25	17 45 50.4	-28 59 13	359.9817	-0.0675	G359.9832-0.0675	G359.9831-0.0675	359.982-0.068	1720 MHz;	1720	53		0.15	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
26	17 45 50.5	-28 59 30.5	359.9777	-0.0703	G359.9832-0.0675	G359.9831-0.0675	359.977-0.070	1720 MHz;	1720	60	2.1	0.09	NRAOVLA	A	2.6	5.200	2.7 x 1.2	+OH		16.02.2006
27	17 45 37	-29 01 20.9	359.9259	-0.0442	G359.9260-0.0448	G359.9260-0.0448	359.925-0.044	1720 MHz;	1720	-104	4.2	0.22	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
28	17 45 37.3	-29 01 22.4	359.9261	-0.0454	G359.9260-0.0448	G359.9260-0.0448	359.926-0.045	1720 MHz;	1720	-117	2.1	0.06	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
29	17 45 38.5	-29 01 17.4	359.9295	-0.0483	G359.9295-0.0483	G359.9311-0.0450	359.929-0.048	1720 MHz;	1720	-141	2.1	0.21	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
30	17 45 38.8	-28 59 43	359.9526	-0.0358	G359.9520-0.0358	G359.9532-0.0359	359.952-0.035	1720 MHz;	1720	42	4.2	1.75	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
31	17 45 39.7	-28 58 46.6	359.9677	-0.0304	G359.9677-0.0304	G359.9677-0.0304	359.967-0.030	1720 MHz;	1720	100	2.1	0.23	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
32	17 45 40.4	-28 59 41.7	359.9559	-0.0405	G359.9541-0.0406	G359.9532-0.0359	359.955-0.040	1720 MHz;	1720	132	8.5	5.66	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
33	17 45 40.4	-28 59 21.1	359.9608	-0.0376	G359.9608-0.0376	G359.9608-0.0376	359.960-0.037	1720 MHz;	1720	32	4.2	0.48	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
34	17 45 41.6	-29 01 47.9	359.9282	-0.0625	G359.9282-0.0625	G359.9321-0.0654	359.928-0.062	1720 MHz;	1720	55	6.3	1.1	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
35	17 45 42.1	-28 59 9.5	359.9668	-0.0412	G359.9657-0.0425	G359.9668-0.0427	359.966-0.041	1720 MHz;	1720	34	2.1	0.27	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
36	17 45 42.8	-29 01 41.4	359.9321	-0.0654	G359.9325-0.0655	G359.9321-0.0654	359.932-0.065	1720 MHz;	1720	62	4.2	0.25	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
37	17 45 42.8	-29 01 42.6	359.9318	-0.0655	G359.9325-0.0655	G359.9321-0.0654	359.931-0.065	1720 MHz;	1720	49	2.1	0.14	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
38	17 45 43	-29 01 37.9	359.9334	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.933-0.065	1720 MHz;	1720	60	2.1	0.26	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
39	17 45 43.3	-29 01 35.3	359.9344	-0.0659	G359.9325-0.0655	G359.9321-0.0654	359.934-0.065	1720 MHz;	1720	53	4.2	0.83	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
40	17 45 43.3	-29 01 32.7	359.9351	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	62	4.2	0.59	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
41	17 45 43.5	-29 01 32.2	359.9355	-0.0660	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	57	4.2	1.3	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
42	17 45 44.3	-29 01 19.3	359.9402	-0.0669	G359.9402-0.0669	G359.9402-0.0669	359.940-0.066	1720 MHz;	1720	66	6.3	14.85	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
43	17 45 48.5	-28 59 40.4	359.9717	-0.0657	G359.9717-0.0657	G359.9831-0.0675	359.971-0.065	1720 MHz;	1720	42	2.1	0.37	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
44	17 45 48.6	-28 59 25.5	359.9753	-0.0637	G359.9832-0.0675	G359.9831-0.0675	359.975-0.063	1720 MHz;	1720	45	4.2	0.53	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
45	17 45 48.7	-29 00 25.7	359.9613	-0.0728	G359.9613-0.0728	G359.9613-0.0728	359.961-0.072	1720 MHz;	1720	60	2.1	0.26	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
46	17 45 49.7	-28 59 42.4	359.9734	-0.0696	G359.9832-0.0675	G359.9831-0.0675	359.973-0.069	1720 MHz;	1720	68	4.2	0.39	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
47	17 45 49.8	-28 59 53.7	359.9709	-0.0715	G359.9832-0.0675	G359.9831-0.0675	359.970-0.071	1720 MHz;	1720	64	2.1	0.22	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
48	17 45 50	-28 59 19.6	359.9794	-0.0673	G359.9832-0.0675	G359.9831-0.0675	359.979-0.067	1720 MHz;	1720	53	2.1	0.3	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
49	17 45 50.1	-28 59 29.7	359.9772	-0.0690	G359.9832-0.0675	G359.9831-0.0675	359.977-0.068	1720 MHz;	1720	55	2.1	0.33	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
50	17 45 50.2	-28 59 58.4	359.9707	-0.0736	G359.9832-0.0675	G359.9831-0.0675	359.970-0.073	1720 MHz;	1720	62	2.1	0.2	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
51	17 45 50.4	-28 59 13	359.9817	-0.0675	G359.9832-0.0675	G359.9831-0.0675	359.982-0.068	1720 MHz;	1720	53		0.29	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
52	17 45 50.5	-28 59 30.5	359.9777	-0.0703	G359.9832-0.0675	G359.9831-0.0675	359.977-0.070	1720 MHz;	1720	60	2.1	0.11	NRAOVLA	BnA	2.6	6.300	3.9 x 2.8	+OH		24.05.2006
53	17 45 37	-29 01 20.9	359.9259	-0.0442	G359.9260-0.0448	G359.9260-0.0448	359.925-0.044	1720 MHz;	1720	-104	4.2	0.2	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
54	17 45 37.3	-29 01 22.4	359.9261	-0.0454	G359.9260-0.0448	G359.9260-0.0448	359.926-0.045	1720 MHz;	1720	-117	2.1	0.05	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
55	17 45 38.5	-29 01 17.4	359.9295	-0.0483	G359.9295-0.0483	G359.9311-0.0450	359.929-0.048	1720 MHz;	1720	-141	2.1	0.24	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
56	17 45 38.8	-28 59 43	359.9526	-0.0358	G359.9520-0.0358	G359.9532-0.0359	359.952-0.035	1720 MHz;	1720	42	4.2	1.76	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
57	17 45 39.7	-28 58 46.6	359.9677	-0.0304	G359.9677-0.0304	G359.9677-0.0304	359.967-0.030	1720 MHz;	1720	100	2.1	0.27	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
58	17 45 40.4	-28 59 41.7	359.9559	-0.0405	G359.9541-0.0406	G359.9532-0.0359	359.955-0.040	1720 MHz;	1720	132	8.5	5.67	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
59	17 45 40.4	-28 59 21.1	359.9608	-0.0376	G359.9608-0.0376	G359.9608-0.0376	359.960-0.037	1720 MHz;	1720	32	4.2	0.44	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
60	17 45 41.6	-29 01 47.9	359.9282	-0.0625	G359.9282-0.0625	G359.9321-0.0654	359.928-0.062	1720 MHz;	1720	55	6.3	1.04	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
61	17 45 42.1	-28 59 9.5	359.9668	-0.0412	G359.9657-0.0425	G359.9668-0.0427	359.966-0.041	1720 MHz;	1720	34	2.1	0.15	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
62	17 45 42.8	-29 01 41.4	359.9321	-0.0654	G359.9325-0.0655	G359.9321-0.0654	359.932-0.065	1720 MHz;	1720	62	4.2	0.23	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
63	17 45 42.8	-29 01 42.6	359.9318	-0.0655	G359.9325-0.0655	G359.9321-0.0654	359.931-0.065	1720 MHz;	1720	49	2.1	0.17	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
64	17 45 43	-29 01 37.9	359.9334	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.933-0.065	1720 MHz;	1720	60	2.1	0.26	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
65	17 45 43.3	-29 01 35.3	359.9344	-0.0659	G359.9325-0.0655	G359.9321-0.0654	359.934-0.065	1720 MHz;	1720	53	4.2	0.79	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
66	17 45 43.3	-29 01 32.7	359.9351	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	62	4.2	0.62	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
67	17 45 43.5	-29 01 32.2	359.9355	-0.0660	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	57	4.2	1.34	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
68	17 45 44.3	-29 01 19.3	359.9402	-0.0669	G359.9402-0.0669	G359.9402-0.0669	359.940-0.066	1720 MHz;	1720	66	6.3	15.33	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
69	17 45 48.5	-28 59 40.4	359.9717	-0.0657	G359.9717-0.0657	G359.9831-0.0675	359.971-0.065	1720 MHz;	1720	42	2.1	0.36	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
70	17 45 48.6	-28 59 25.5	359.9753	-0.0637	G359.9832-0.0675	G359.9831-0.0675	359.975-0.063	1720 MHz;	1720	45	4.2	0.54	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
71	17 45 48.7	-29 00 25.7	359.9613	-0.0728	G359.9613-0.0728	G359.9613-0.0728	359.961-0.072	1720 MHz;	1720	60	2.1	0.22	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
72	17 45 49.7	-28 59 42.4	359.9734	-0.0696	G359.9832-0.0675	G359.9831-0.0675	359.973-0.069	1720 MHz;	1720	68	4.2	0.36	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
73	17 45 49.8	-28 59 53.7	359.9709	-0.0715	G359.9832-0.0675	G359.9831-0.0675	359.970-0.071	1720 MHz;	1720	64	2.1	0.53	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
74	17 45 50	-28 59 19.6	359.9794	-0.0673	G359.9832-0.0675	G359.9831-0.0675	359.979-0.067	1720 MHz;	1720	53	2.1	0.35	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
75	17 45 50.1	-28 59 29.7	359.9772	-0.0690	G359.9832-0.0675	G359.9831-0.0675	359.977-0.068	1720 MHz;	1720	55	2.1	0.35	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
76	17 45 50.2	-28 59 58.4	359.9707	-0.0736	G359.9832-0.0675	G359.9831-0.0675	359.970-0.073	1720 MHz;	1720	62	2.1	0.42	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
77	17 45 50.4	-28 59 13	359.9817	-0.0675	G359.9832-0.0675	G359.9831-0.0675	359.982-0.068	1720 MHz;	1720	53		0.24	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
78	17 45 50.5	-28 59 30.5	359.9777	-0.0703	G359.9832-0.0675	G359.9831-0.0675	359.977-0.070	1720 MHz;	1720	60	2.1	0.08	NRAOVLA	B	2.6	7.200	5.7 x 3.3	+OH		13.06.2006
79	17 45 37	-29 01 20.9	359.9259	-0.0442	G359.9260-0.0448	G359.9260-0.0448	359.925-0.044	1720 MHz;	1720	-104	4.2	0.21	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
80	17 45 37.3	-29 01 22.4	359.9261	-0.0454	G359.9260-0.0448	G359.9260-0.0448	359.926-0.045	1720 MHz;	1720	-117	2.1	0.08	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
81	17 45 38.5	-29 01 17.4	359.9295	-0.0483	G359.9295-0.0483	G359.9311-0.0450	359.929-0.048	1720 MHz;	1720	-141	2.1	0.24	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
82	17 45 38.8	-28 59 43	359.9526	-0.0358	G359.9520-0.0358	G359.9532-0.0359	359.952-0.035	1720 MHz;	1720	42	4.2	1.78	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
83	17 45 39.7	-28 58 46.6	359.9677	-0.0304	G359.9677-0.0304	G359.9677-0.0304	359.967-0.030	1720 MHz;	1720	100	2.1	0.2	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
84	17 45 40.4	-28 59 41.7	359.9559	-0.0405	G359.9541-0.0406	G359.9532-0.0359	359.955-0.040	1720 MHz;	1720	132	8.5	5.65	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
85	17 45 40.4	-28 59 21.1	359.9608	-0.0376	G359.9608-0.0376	G359.9608-0.0376	359.960-0.037	1720 MHz;	1720	32	4.2	0.47	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
86	17 45 41.6	-29 01 47.9	359.9282	-0.0625	G359.9282-0.0625	G359.9321-0.0654	359.928-0.062	1720 MHz;	1720	55	6.3	1.17	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
87	17 45 42.1	-28 59 9.5	359.9668	-0.0412	G359.9657-0.0425	G359.9668-0.0427	359.966-0.041	1720 MHz;	1720	34	2.1	0.46	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
88	17 45 42.8	-29 01 41.4	359.9321	-0.0654	G359.9325-0.0655	G359.9321-0.0654	359.932-0.065	1720 MHz;	1720	62	4.2	0.24	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
89	17 45 42.8	-29 01 42.6	359.9318	-0.0655	G359.9325-0.0655	G359.9321-0.0654	359.931-0.065	1720 MHz;	1720	49	2.1	0.16	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
90	17 45 43	-29 01 37.9	359.9334	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.933-0.065	1720 MHz;	1720	60	2.1	0.4	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
91	17 45 43.3	-29 01 35.3	359.9344	-0.0659	G359.9325-0.0655	G359.9321-0.0654	359.934-0.065	1720 MHz;	1720	53	4.2	0.83	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
92	17 45 43.3	-29 01 32.7	359.9351	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	62	4.2	0.62	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
93	17 45 43.5	-29 01 32.2	359.9355	-0.0660	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	57	4.2	1.33	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
94	17 45 44.3	-29 01 19.3	359.9402	-0.0669	G359.9402-0.0669	G359.9402-0.0669	359.940-0.066	1720 MHz;	1720	66	6.3	15.47	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
95	17 45 48.5	-28 59 40.4	359.9717	-0.0657	G359.9717-0.0657	G359.9831-0.0675	359.971-0.065	1720 MHz;	1720	42	2.1	0.27	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
96	17 45 48.6	-28 59 25.5	359.9753	-0.0637	G359.9832-0.0675	G359.9831-0.0675	359.975-0.063	1720 MHz;	1720	45	4.2	0.51	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
97	17 45 48.7	-29 00 25.7	359.9613	-0.0728	G359.9613-0.0728	G359.9613-0.0728	359.961-0.072	1720 MHz;	1720	60	2.1	0.17	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
98	17 45 49.7	-28 59 42.4	359.9734	-0.0696	G359.9832-0.0675	G359.9831-0.0675	359.973-0.069	1720 MHz;	1720	68	4.2	0.4	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
99	17 45 49.8	-28 59 53.7	359.9709	-0.0715	G359.9832-0.0675	G359.9831-0.0675	359.970-0.071	1720 MHz;	1720	64	2.1	0.34	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
100	17 45 50	-28 59 19.6	359.9794	-0.0673	G359.9832-0.0675	G359.9831-0.0675	359.979-0.067	1720 MHz;	1720	53	2.1	0.5	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
101	17 45 50.1	-28 59 29.7	359.9772	-0.0690	G359.9832-0.0675	G359.9831-0.0675	359.977-0.068	1720 MHz;	1720	55	2.1	0.38	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
102	17 45 50.2	-28 59 58.4	359.9707	-0.0736	G359.9832-0.0675	G359.9831-0.0675	359.970-0.073	1720 MHz;	1720	62	2.1	0.22	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
103	17 45 50.4	-28 59 13	359.9817	-0.0675	G359.9832-0.0675	G359.9831-0.0675	359.982-0.068	1720 MHz;	1720	53		0.34	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
104	17 45 50.5	-28 59 30.5	359.9777	-0.0703	G359.9832-0.0675	G359.9831-0.0675	359.977-0.070	1720 MHz;	1720	60	2.1	<0.02	NRAOVLA	B	2.6	8.000	7.7 x 3.8	+OH		15.07.2006
105	17 45 37	-29 01 20.9	359.9259	-0.0442	G359.9260-0.0448	G359.9260-0.0448	359.925-0.044	1720 MHz;	1720	-104	4.2	0.22	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
106	17 45 37.3	-29 01 22.4	359.9261	-0.0454	G359.9260-0.0448	G359.9260-0.0448	359.926-0.045	1720 MHz;	1720	-117	2.1	0.07	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
107	17 45 38.5	-29 01 17.4	359.9295	-0.0483	G359.9295-0.0483	G359.9311-0.0450	359.929-0.048	1720 MHz;	1720	-141	2.1	0.23	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
108	17 45 38.8	-28 59 43	359.9526	-0.0358	G359.9520-0.0358	G359.9532-0.0359	359.952-0.035	1720 MHz;	1720	42	4.2	1.74	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
109	17 45 39.7	-28 58 46.6	359.9677	-0.0304	G359.9677-0.0304	G359.9677-0.0304	359.967-0.030	1720 MHz;	1720	100	2.1	0.18	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
110	17 45 40.4	-28 59 41.7	359.9559	-0.0405	G359.9541-0.0406	G359.9532-0.0359	359.955-0.040	1720 MHz;	1720	132	8.5	5.42	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
111	17 45 40.4	-28 59 21.1	359.9608	-0.0376	G359.9608-0.0376	G359.9608-0.0376	359.960-0.037	1720 MHz;	1720	32	4.2	0.47	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
112	17 45 41.6	-29 01 47.9	359.9282	-0.0625	G359.9282-0.0625	G359.9321-0.0654	359.928-0.062	1720 MHz;	1720	55	6.3	0.96	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
113	17 45 42.1	-28 59 9.5	359.9668	-0.0412	G359.9657-0.0425	G359.9668-0.0427	359.966-0.041	1720 MHz;	1720	34	2.1	0.28	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
114	17 45 42.8	-29 01 41.4	359.9321	-0.0654	G359.9325-0.0655	G359.9321-0.0654	359.932-0.065	1720 MHz;	1720	62	4.2	0.27	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
115	17 45 42.8	-29 01 42.6	359.9318	-0.0655	G359.9325-0.0655	G359.9321-0.0654	359.931-0.065	1720 MHz;	1720	49	2.1	0.17	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
116	17 45 43	-29 01 37.9	359.9334	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.933-0.065	1720 MHz;	1720	60	2.1	0.34	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
117	17 45 43.3	-29 01 35.3	359.9344	-0.0659	G359.9325-0.0655	G359.9321-0.0654	359.934-0.065	1720 MHz;	1720	53	4.2	0.85	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
118	17 45 43.3	-29 01 32.7	359.9351	-0.0656	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	62	4.2	0.61	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
119	17 45 43.5	-29 01 32.2	359.9355	-0.0660	G359.9325-0.0655	G359.9321-0.0654	359.935-0.065	1720 MHz;	1720	57	4.2	1.26	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
120	17 45 44.3	-29 01 19.3	359.9402	-0.0669	G359.9402-0.0669	G359.9402-0.0669	359.940-0.066	1720 MHz;	1720	66	6.3	14.52	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
121	17 45 48.5	-28 59 40.4	359.9717	-0.0657	G359.9717-0.0657	G359.9831-0.0675	359.971-0.065	1720 MHz;	1720	42	2.1	0.31	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
122	17 45 48.6	-28 59 25.5	359.9753	-0.0637	G359.9832-0.0675	G359.9831-0.0675	359.975-0.063	1720 MHz;	1720	45	4.2	0.5	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
123	17 45 48.7	-29 00 25.7	359.9613	-0.0728	G359.9613-0.0728	G359.9613-0.0728	359.961-0.072	1720 MHz;	1720	60	2.1	0.19	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
124	17 45 49.7	-28 59 42.4	359.9734	-0.0696	G359.9832-0.0675	G359.9831-0.0675	359.973-0.069	1720 MHz;	1720	68	4.2	0.52	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
125	17 45 49.8	-28 59 53.7	359.9709	-0.0715	G359.9832-0.0675	G359.9831-0.0675	359.970-0.071	1720 MHz;	1720	64	2.1	0.4	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
126	17 45 50	-28 59 19.6	359.9794	-0.0673	G359.9832-0.0675	G359.9831-0.0675	359.979-0.067	1720 MHz;	1720	53	2.1	0.42	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
127	17 45 50.1	-28 59 29.7	359.9772	-0.0690	G359.9832-0.0675	G359.9831-0.0675	359.977-0.068	1720 MHz;	1720	55	2.1	0.34	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
128	17 45 50.2	-28 59 58.4	359.9707	-0.0736	G359.9832-0.0675	G359.9831-0.0675	359.970-0.073	1720 MHz;	1720	62	2.1	0.19	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
129	17 45 50.4	-28 59 13	359.9817	-0.0675	G359.9832-0.0675	G359.9831-0.0675	359.982-0.068	1720 MHz;	1720	53		0.19	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006
130	17 45 50.5	-28 59 30.5	359.9777	-0.0703	G359.9832-0.0675	G359.9831-0.0675	359.977-0.070	1720 MHz;	1720	60	2.1	0.18	NRAOVLA	B	2.6	6.600	7.6 x 3.4	+OH		30.08.2006

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

select MAX(oh_data_all.ra_hms) as ra_hms,MAX(oh_data_all.dec_dms) as dec_dms,MAX(oh_data_all.source_name) as source_name,MAX(oh_data_all.ra) as ra,MAX(oh_data_all.dec) as dec,MAX(oh_data_all.l) as l,MAX(oh_data_all.b) as b,MAX(oh_data_all.grp) as grp,MAX(oh_data_all.grpv) as grpv,MAX(oh_data_all.other_name) as other_name,MAX(oh_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(oh_data_all.line) as line,MAX(oh_data_all.freq) as freq,MAX(oh_data_all.pol) as pol,MAX(oh_data_all.vrange) as vrange,MAX(oh_data_all.vpeak) as vpeak,MAX(oh_data_all.peak) as peak,MAX(oh_data_all.fwhm) as fwhm,MAX(oh_data_all.int) as int,MAX(oh_data_all.rms) as rms,MAX(oh_data_all.units) as units,MAX(oh_data_all.units_rms) as units_rms,MAX(oh_data_all.date_txt) as date_txt,MAX(oh_data_all.telescope_ref) as telescope_ref,MAX(oh_data_all.telescope_conf) as telescope_conf,MAX(oh_data_all.v_step) as v_step,MAX(oh_data_all.beam) as beam,MAX(oh_data_all.beam_maj) as beam_maj,MAX(oh_data_all.beam_min) as beam_min,MAX(oh_data_all.beam_pa) as beam_pa,MAX(oh_data_all.ref) as ref,MAX(oh_data_all.list_ref) as list_ref,MAX(oh_data_all.ascii) as ascii,MAX(oh_data_all.url) as url,MAX(oh_data_all.image) as image,MAX(oh_data_all.image2) as image2,MAX(oh_data_all.image3) as image3,MAX(oh_data_all.descr) as descr,MAX(oh_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(oh_data_all.dist) as dist,1 as dist_parallax,MAX(oh_data_all.date_txt) as date_txt,MAX(line_det) as line_det,MAX(type) as type,MAX(simbad_types_cat) as simbad_types_cat FROM oh_data_all  LEFT JOIN all_objects_withmet ON oh_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON oh_data_all.line=transitions."Line"  WHERE ref ilike 'PIH11B' AND detected=true AND hide=false GROUP BY ref

select oh_data_all.ra_hms,oh_data_all.dec_dms,oh_data_all.source_name,oh_data_all.ra,oh_data_all.dec,oh_data_all.l,oh_data_all.b,oh_data_all.grp,oh_data_all.grpv,oh_data_all.other_name,oh_data_all.other_desc,oh_data_all.thermal,oh_data_all.line,oh_data_all.freq,oh_data_all.pol,oh_data_all.vrange,oh_data_all.vpeak,oh_data_all.peak,oh_data_all.fwhm,oh_data_all.int,oh_data_all.rms,oh_data_all.units,oh_data_all.units_rms,oh_data_all.date_txt,oh_data_all.telescope_ref,oh_data_all.telescope_conf,oh_data_all.v_step,oh_data_all.beam,oh_data_all.beam_maj,oh_data_all.beam_min,oh_data_all.beam_pa,oh_data_all.ref,oh_data_all.list_ref,oh_data_all.ascii,oh_data_all.url,oh_data_all.image,oh_data_all.image2,oh_data_all.image3,oh_data_all.descr,oh_data_all.id,oh_data_all.mjy_flag,oh_data_all.rms_mjy_flag,oh_data_all.dist,oh_data_all.dist_parallax,oh_data_all.date_txt,line_det,type,simbad_types_cat FROM oh_data_all   LEFT JOIN all_objects_withmet ON oh_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON oh_data_all.line=transitions."Line"  WHERE ref ilike 'PIH11B' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

PIH11B - Very Large Array Monitoring of 1720 MHz OH Masers toward the Galactic Center

View as list of objects

Detection table from Pihlstrom et al. (2011)