the Extensive Database of Astrophysical Maser Sources

Abstract
We present the first results from the MALT-45 (Millimetre Astronomer's Legacy Team-45 GHz) Galactic Plane survey. We have observed 5 square degrees (l = 330°-335°, b = ±0.5°) for spectral lines in the 7 mm band (42-44 and 48-49 GHz), including CS (1-0), class I CH₃OH masers in the 7(0,7)-6(1,6) A⁺ transition and SiO (1-0) v = 0, 1, 2, 3. MALT-45 is the first unbiased, large-scale, sensitive spectral line survey in this frequency range. In this paper, we present data from the survey as well as a few intriguing results rigorous analyses of these science cases are reserved for future publications. Across the survey region, we detected 77 class I CH₃OH masers, of which 58 are new detections, along with many sites of thermal and maser SiO emission and thermal CS. We found that 35 class I CH₃OH masers were associated with the published locations of class II CH₃OH, H₂O and OH masers but 42 have no known masers within 60 arcsec. We compared the MALT-45 CS with NH₃ (1,1) to reveal regions of CS depletion and high opacity, as well as evolved star-forming regions with a high ratio of CS to NH₃. All SiO masers are new detections, and appear to be associated with evolved stars from the Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE). Generally, within SiO regions of multiple vibrational modes, the intensity decreases as v = 1, 2, 3, but there are a few exceptions where v = 2 is stronger than v = 1. eprintid: arXiv:1501.06650

ID	Obs. RA	Obs. Dec	l	b	Source name	Descr.	Line	V_peak	F_peak	Telescope	RMS	Beam	Detection
	(J2000)	(J2000)	(deg.)	(deg.)			CH₃OH (class I)	(km/s)	(Jy)		(Jy)	(arcsec)	Yes/No
1	16 07 37.8	-52 30 52.1	330.2953	-0.3919	G330.30-0.39		44 GHz (I)	-80.6	4.4	ATCA	4.900	64	+H₂O +CH₃OH I
2	16 09 31.2	-52 16 3.9	330.6746	-0.4043	G330.67-0.40		44 GHz (I)	-65.0	5.3	ATCA	5.600	64	+CH₃OH I
3	16 07 12.8	-51 43 3.4	330.7831	0.2415	G330.78+0.24		44 GHz (I)	-43.4	3.7	ATCA	4.300	64	+CH₃OH I
4	16 07 41.1	-51 43 48	330.8289	0.1832	G330.83+0.18		44 GHz (I)	-82.0	3.1	ATCA	3.800	64	+CH₃OH I
5	16 10 16.6	-52 05 54.3	330.8747	-0.3584	G330.87-0.36		44 GHz (I)	-61.4	10	ATCA	15.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
6	16 10 22.3	-52 06 28.1	330.8790	-0.3752	G330.88-0.38		44 GHz (I)	-65.5	7.8	ATCA	10.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
7	16 10 44.3	-52 06 04	330.9248	-0.4086	G330.92-0.41		44 GHz (I)	-42.7	28	ATCA	33.000	64	+CH₃OH I
8	16 10 6.9	-51 59 7.3	330.9331	-0.2585	G330.93-0.26		44 GHz (I)	-89.9	5.0	ATCA	5.900	64	+CH₃OH I
9	16 09 53.1	-51 54 57.9	330.9541	-0.1836	G330.95-0.18	Descr	44 GHz (I)	-87.6	4.0	ATCA	4.700	64	+H₂O +CH₃OH I +CH₃OH II +OH
10	16 12 0.3	-52 00 38.5	331.1290	-0.4751	G331.13-0.48		44 GHz (I)	-68.0	5.6	ATCA	7.500	64	+CH₃OH I
11	16 12 5.9	-52 01 33.3	331.1290	-0.4961	G331.13-0.50		44 GHz (I)	-68.2	8.6	ATCA	11.000	64	+CH₃OH I
12	16 11 0.7	-51 50 24.8	331.1332	-0.2460	G331.13-0.25		44 GHz (I)	-91.4	71	ATCA	88.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
13	16 09 15.5	-51 33 8.1	331.1290	0.1499	G331.13+0.15		44 GHz (I)	-75.7	68	ATCA	60.000	64	+CH₃OH I
14	16 09 52.2	-51 32 18.6	331.2083	0.0956	G331.21+0.10		44 GHz (I)	-67.4	3.5	ATCA	3.300	64	+CH₃OH I
15	16 11 31.3	-51 41 54.8	331.2875	-0.1961	G331.29-0.20		44 GHz (I)	-89.5	15	ATCA	20.000	64	+CH₃OH I +CH₃OH II
16	16 12 27.4	-51 46 26.9	331.3416	-0.3502	G331.34-0.35		44 GHz (I)	-65.9	32	ATCA	37.000	64	+CH₃OH I +CH₃OH II +OH
17	16 11 6.4	-51 31 9.7	331.3624	-0.0210	G331.36-0.02		44 GHz (I)	-84.4	4.7	ATCA	5.800	64	+CH₃OH I
18	16 12 48.9	-51 47 26.2	331.3707	-0.4001	G331.37-0.40		44 GHz (I)	-65.3	5.9	ATCA	7.300	64	-CH₃OH I +CH₃OH I
19	16 11 39.5	-51 35 35.3	331.3749	-0.1335	G331.37-0.13		44 GHz (I)	-89.3	3.7	ATCA	4.500	64	+CH₃OH I
20	16 10 28.7	-51 22 37.6	331.3874	0.1498	G331.39+0.15		44 GHz (I)	-45.9	6.5	ATCA	5.800	64	+CH₃OH I
21	16 11 57.8	-51 35 40.6	331.4085	-0.1669	G331.41-0.17		44 GHz (I)	-85.2	4.9	ATCA	6.600	64	+CH₃OH I
22	16 12 11.4	-51 35 24.1	331.4373	-0.1876	G331.44-0.19		44 GHz (I)	-88.2	14	ATCA	18.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
23	16 12 0.6	-51 27 44.3	331.5042	-0.0752	G331.50-0.08		44 GHz (I)	-89.3	38	ATCA	49.000	64	+CH₃OH I
24	16 12 8.2	-51 29 01	331.5040	-0.1042	G331.50-0.10		44 GHz (I)	-87.1	11	ATCA	14.000	64	+H₂O +CH₃OH I -OH +OH
25	16 12 6.3	-51 27 35.5	331.5167	-0.0835	G331.52-0.08		44 GHz (I)	-90.4	20	ATCA	18.000	64	+CH₃OH I
26	16 12 15.4	-51 27 17.1	331.5374	-0.0960	G331.54-0.10		44 GHz (I)	-92.3	77	ATCA	77.000	64	+H₂O +CH₃OH I -OH +OH
27	16 12 10.1	-51 25 39.9	331.5458	-0.0668	G331.55-0.07		44 GHz (I)	-89.1	4.9	ATCA	5.300	64	-CH₃OH I +CH₃OH I +CH₃OH II -OH +OH
28	16 12 26.8	-51 27 20.4	331.5584	-0.1169	G331.56-0.12		44 GHz (I)	-101.0	14	ATCA	16.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
29	16 13 33.1	-51 24 28	331.7166	-0.2001	G331.72-0.20		44 GHz (I)	-47.0	4.1	ATCA	3.800	64	+CH₃OH I
30	16 13 54	-51 15 32.1	331.8584	-0.1294	G331.86-0.13		44 GHz (I)	-50.2	5.6	ATCA	6.500	64	+CH₃OH I
31	16 13 11.6	-51 06 19.8	331.8833	0.0582	G331.88+0.06		44 GHz (I)	-89.3	10	ATCA	13.000	64	+H₂O +CH₃OH I
32	16 13 58.2	-51 10 46.7	331.9209	-0.0794	G331.92-0.08		44 GHz (I)	-52.1	5.8	ATCA	6.400	64	+CH₃OH I
33	16 16 13.7	-51 18 30.7	332.0874	-0.4168	G332.09-0.42		44 GHz (I)	-56.1	17	ATCA	21.000	64	+H₂O +CH₃OH I +CH₃OH II
34	16 15 18.1	-50 56 3.2	332.2417	-0.0460	G332.24-0.05		44 GHz (I)	-49.3	140	ATCA	180.000	64	+CH₃OH I
35	16 15 43.9	-50 55 57.8	332.2916	-0.0918	G332.30-0.09		44 GHz (I)	-49.9	41	ATCA	37.000	64	+H₂O +CH₃OH I +CH₃OH II
36	16 14 42	-50 42 50.2	332.3251	0.1789	G332.32+0.18		44 GHz (I)	-48.5	9.3	ATCA	11.000	64	+H₂O +CH₃OH I
37	16 16 8.8	-50 53 55.2	332.3624	-0.1126	G332.36-0.11		44 GHz (I)	-50.6	9.8	ATCA	12.000	64	+CH₃OH I +CH₃OH II +OH
38	16 16 1.3	-50 33 12.6	332.5874	0.1499	G332.59+0.15		44 GHz (I)	-42.7	3.4	ATCA	4.000	64	+CH₃OH I
39	16 17 28.1	-50 46 21.2	332.6001	-0.1669	G332.60-0.17		44 GHz (I)	-46.1	15	ATCA	18.000	64	-CH₃OH I +CH₃OH I +CH₃OH II
40	16 17 27.9	-50 36 16.5	332.7167	-0.0460	G332.72-0.05		44 GHz (I)	-40.4	6.4	ATCA	7.300	64	+CH₃OH I
41	16 20 27.1	-50 40 58.3	333.0000	-0.4335	G333.00-0.43		44 GHz (I)	-56.7	6.6	ATCA	9.800	64	+H₂O +CH₃OH I
42	16 18 55.5	-50 24 4.3	333.0249	-0.0626	G333.02-0.06		44 GHz (I)	-41.2	6.8	ATCA	7.900	64	-CH₃OH I +CH₃OH II
43	16 18 44.6	-50 21 56	333.0292	-0.0169	G333.03-0.02		44 GHz (I)	-42.5	5.6	ATCA	7.000	64	-CH₃OH I +CH₃OH I +CH₃OH II
44	16 20 48.4	-50 38 41.3	333.0667	-0.4460	G333.07-0.44		44 GHz (I)	-54.8	2.7	ATCA	3.200	64	-CH₃OH I +CH₃OH I +CH₃OH II
45	16 20 37.3	-50 36 33.5	333.0709	-0.4002	G333.07-0.40		44 GHz (I)	-52.9	4.1	ATCA	4.600	64	+CH₃OH I
46	16 21 15.1	-50 39 45.6	333.1041	-0.5084	G333.10-0.51		44 GHz (I)	-57.6	14	ATCA	8.100	64	+CH₃OH I
47	16 21 04	-50 35 52	333.1291	-0.4418	G333.13-0.44		44 GHz (I)	-50.2	120	ATCA	150.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
48	16 21 1.8	-50 34 27.1	333.1416	-0.4209	G333.14-0.42	Descr	44 GHz (I)	-56.3	16	ATCA	18.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
49	16 19 43.4	-50 19 43	333.1666	-0.1001	G333.16-0.10		44 GHz (I)	-91.8	5.6	ATCA	7.700	64	+CH₃OH I +CH₃OH II
50	16 19 45.7	-50 18 18.3	333.1875	-0.0876	G333.18-0.09		44 GHz (I)	-87.1	5.6	ATCA	7.100	64	-CH₃OH I +CH₃OH I +CH₃OH II
51	16 21 18.6	-50 30 23.5	333.2209	-0.4044	G333.22-0.40		44 GHz (I)	-51.9	17	ATCA	19.000	64	+CH₃OH I
52	16 19 50.3	-50 15 28.9	333.2292	-0.0627	G333.23-0.06		44 GHz (I)	-87.6	250	ATCA	310.000	64	+H₂O +CH₃OH II +OH
53	16 19 29.5	-50 11 23.5	333.2376	0.0248	G333.24+0.02		44 GHz (I)	-69.3	3.9	ATCA	5.400	64	+CH₃OH I
54	16 21 29.7	-50 26 30.3	333.2875	-0.3793	G333.29-0.38		44 GHz (I)	-52.3	5.4	ATCA	6.300	64	+CH₃OH I
55	16 21 25.3	-50 25 5.4	333.2959	-0.3543	G333.30-0.35		44 GHz (I)	-50.8	3.5	ATCA	3.600	64	+CH₃OH I
56	16 19 28.7	-50 04 50.9	333.3126	0.1040	G333.31+0.10		44 GHz (I)	-45.3	7.7	ATCA	13.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
57	16 21 36.4	-50 23 40.6	333.3334	-0.3585	G333.33-0.36		44 GHz (I)	-52.1	22	ATCA	22.000	64	+CH₃OH I
58	16 21 4.4	-50 15 21.6	333.3709	-0.2002	G333.37-0.20		44 GHz (I)	-61.6	13	ATCA	16.000	64	+H₂O +CH₃OH I
59	16 20 10.6	-50 04 53.7	333.3918	0.0248	G333.39+0.02		44 GHz (I)	-70.6	4.1	ATCA	6.500	64	+CH₃OH I
60	16 21 22.1	-50 09 42.5	333.4708	-0.1667	G333.47-0.16		44 GHz (I)	-43.4	21	ATCA	23.000	64	+H₂O +CH₃OH I +CH₃OH II +OH
61	16 20 7.6	-49 55 10.1	333.5000	0.1457	G333.50+0.15		44 GHz (I)	-112.9	3.5	ATCA	5.900	64
62	16 22 1.9	-50 12 11.2	333.5167	-0.2710	G333.52-0.27		44 GHz (I)	-50.6	6.4	ATCA	8.700	64	+CH₃OH I
63	16 22 19.6	-50 11 28.6	333.5585	-0.2961	G333.56-0.30		44 GHz (I)	-46.5	7.8	ATCA	11.000	64	+CH₃OH I
64	16 21 09	-49 59 48.3	333.5625	-0.0251	G333.56-0.02		44 GHz (I)	-40.2	54	ATCA	63.000	64	-CH₃OH I +CH₃OH I
65	16 20 55.9	-49 57 19.4	333.5667	0.0290	G333.57+0.03		44 GHz (I)	-85.0	6.2	ATCA	6.400	64	+CH₃OH I
66	16 22 8.5	-50 06 31.7	333.5959	-0.2168	G333.59-0.21		44 GHz (I)	-49.7	26	ATCA	34.000	64	+H₂O +CH₃OH I +OH
67	16 22 29.4	-50 01 23.8	333.6960	-0.1960	G333.70-0.20	Descr	44 GHz (I)	-51.0	4.4	ATCA	6.100	64	+CH₃OH I
68	16 22 12.8	-49 57 20.1	333.7125	-0.1168	G333.71-0.12		44 GHz (I)	-31.9	6.6	ATCA	6.900	64	+CH₃OH I
69	16 22 0.7	-49 50 26.5	333.7709	-0.0126	G333.77-0.01		44 GHz (I)	-89.5	16	ATCA	20.000	64	+CH₃OH I
70	16 23 3.5	-50 00 51	333.7668	-0.2544	G333.77-0.25		44 GHz (I)	-49.5	6.4	ATCA	8.000	64	+CH₃OH I
71	16 23 28.8	-50 00 39.2	333.8168	-0.3002	G333.82-0.30		44 GHz (I)	-48.5	19	ATCA	24.000	64	+CH₃OH I
72	16 22 57.7	-49 48 39.2	333.9001	-0.1001	G333.90-0.10		44 GHz (I)	-64.4	3.4	ATCA	4.100	64	+CH₃OH I +OH
73	16 23 17.4	-49 48 38.4	333.9376	-0.1376	G333.94-0.14		44 GHz (I)	-42.3	4.6	ATCA	4.900	64	+CH₃OH I +CH₃OH II
74	16 22 34.6	-49 37 52.8	333.9836	0.0706	G333.98+0.07		44 GHz (I)	-58.4	4.5	ATCA	5.700	64	+CH₃OH I
75	16 23 15	-49 40 51.7	334.0251	-0.0417	G334.03-0.04		44 GHz (I)	-84.4	11	ATCA	14.000	64	+CH₃OH I
76	16 23 50.4	-48 54 8.7	334.6464	0.4373	G334.64+0.44		44 GHz (I)	-66.5	5.7	ATCA	6.400	64	+CH₃OH I
77	16 23 56.6	-48 47 3.7	334.7424	0.5082	G334.74+0.51		44 GHz (I)	-61.4	18	ATCA	6.700	64	+CH₃OH I

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

JOR15 - MALT-45: a 7 mm survey of the southern Galaxy - I. Techniques and spectral line data

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Detection table from Jordan et al. (2015)