2004MNRAS.355..553G

Query : 2004MNRAS.355..553G

2004MNRAS.355..553G - Mon. Not. R. Astron. Soc., 355, 553-584 (2004/December-1)

Long-term monitoring of 6.7-GHz methanol masers.

GOEDHART S., GAYLARD M.J. and VAN DER WALT D.J.

Abstract (from CDS):

A sample of 54 6.7-GHz methanol masers was monitored using the Hartebeesthoek 26-m telescope during the period 1999 January - 2003 March. The observations were taken at 1-2 week intervals, with daily observations when possible if a source was seen to be varying rapidly. It was found that the majority of the sources display a significant level of variability. The time-range of variations range from a few days up to several years. The types of behaviour observed included non-varying, monotonic increases or decreases, as well as aperiodic, quasi-periodic and periodic variations. Seven sources show clear evidence of periodicity, with periods ranging from 132 d up to 520 d.

Abstract Copyright: 2004 RAS

Journal keyword(s): masers - stars: formation - ISM: clouds - HII regions - radio lines: ISM

Simbad objects: 98

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Number of rows : 98
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 281 HII 00 52 25.1 +56 33 54           ~ 251 1
2 NAME Per B SyG 04 37 04.37535450 +29 40 13.8179631   21.7       ~ 533 2
3 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 210 2
4 Caswell CH3OH 174.20-00.08 Mas 05 30 50.4 +33 48 06           ~ 4 1
5 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 789 2
6 MMB G213.705-12.597 Mas 06 07 47.85 -06 22 55.2           ~ 11 0
7 MMB G189.030+00.783 Mas 06 08 40.65 +21 31 07.0           ~ 9 0
8 NAME AFGL 6366S Cluster Cl* 06 08 41 +21 31.0           ~ 10 0
9 MMB G188.946+00.886 Mas 06 08 53.3441 +21 38 29.099           ~ 31 0
10 RAFGL 5180 SFR 06 08 54.1 +21 38 25           ~ 125 0
11 NGC 2175 OpC 06 09 39 +20 29.2   7.0 6.8     ~ 270 3
12 NAME S255-2 IR 06 12 53.8 +17 59 22           ~ 49 0
13 MMB G192.600-00.048 Y*O 06 12 54.0100 +17 59 23.200           ~ 430 0
14 IC 2162 HII 06 13 04.1 +17 58 44           ~ 372 2
15 MMB G196.454-01.677 Mas 06 14 37.03 +13 49 36.6           ~ 17 0
16 LBN 196.49-01.60 HII 06 14 38.29 +13 49 41.0           ~ 169 1
17 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
18 IRAS 10460-5811 Y*O 10 48 04.5510777096 -58 27 01.610150076           ~ 32 1
19 MMB G291.274-00.709 Mas 11 11 53.35 -61 18 23.7           ~ 16 0
20 OH 294.51-01.62 Mas 11 35 32.25 -63 14 43.2           ~ 18 0
21 IRAS 12091-6129 of? 12 11 47.65 -61 46 20.9           ~ 27 0
22 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
23 OH 305.21+00.21 Mas 13 11 13.7017 -62 34 41.397           ~ 24 0
24 [WB2006] G305A Mas 13 11 14.4 -62 34 26           ~ 20 1
25 RAFGL 4176 Y*O 13 43 01.70352 -62 08 51.2304           ~ 163 0
26 OH 309.92+00.48 Mas 13 50 41.78 -61 35 10.2           ~ 50 0
27 IRAS 13471-6120 cor 13 50 41.810 -61 35 10.67           ~ 65 0
28 GAL 309.92+00.48 HII 13 50 42.0 -61 35 09           ~ 34 0
29 Caswell CH3OH 312.11+00.26 Mas 14 08 39.5 -61 13 01           ~ 1 0
30 OH 316.64-00.09 Mas 14 44 18.45 -59 55 11.5           ~ 34 0
31 GAL 316.64-00.09 HII 14 44 20.5 -59 55 21           ~ 8 0
32 RAFGL 4972S cor 15 00 34.52760 -58 58 08.9076           ~ 51 1
33 OH 318.95-00.20 Y*O 15 00 55.35024 -58 58 53.2848           ~ 85 1
34 OH 320.23-00.28 Mas 15 09 51.94 -58 25 38.5           ~ 13 0
35 GAL 320.23-00.29 HII 15 09 53.4 -58 25 40           ~ 17 0
36 OH 322.16+00.63 Mas 15 18 34.64 -56 38 25.3           ~ 21 0
37 [HLB98] SEST 83 Mas 15 31 43.4 -56 30 26           ~ 8 0
38 GAL 328.81+00.64 HII 15 55 48.2 -52 42 50           ~ 10 0
39 Caswell CH3OH 328.809+00.633 Mas 15 55 48.70 -52 43 05.5           ~ 24 0
40 OH 328.24-00.55 Mas 15 57 58.28 -53 59 22.7           ~ 38 0
41 OH 331.13-00.24 Mas 16 10 59.76 -51 50 22.6           ~ 19 0
42 IRAS 16071-5142 HII 16 11 00 -51 50.3           ~ 40 0
43 OH 331.28-00.19 Mas 16 11 26.59 -51 41 56.7           ~ 30 0
44 GAL 331.28-00.19 HII 16 11 26.6 -51 41 57           ~ 56 0
45 OH 335.556-00.307 Mas 16 30 55.98 -48 45 50.2           ~ 9 0
46 OH 336.018-00.827 Mas 16 35 09.35 -48 46 47.1           ~ 12 0
47 GAL 336.99-00.03 HII 16 35 32.7 -47 31 04           ~ 22 1
48 OH 337.00-00.02 Mas 16 35 33.98 -47 31 12.0           ~ 20 0
49 OH 337.920-00.456 Mas 16 41 06.05 -47 07 02.5           ~ 12 0
50 IRAS 16374-4701 HII 16 41 08.3 -47 07 22           ~ 50 0
51 MMB G338.935-00.062 Mas 16 43 16.01 -46 05 40.2           ~ 20 0
52 OH 339.6-00.1 Y*O 16 46 05.99 -45 36 43.3           ~ 86 0
53 GAL 340.79-00.10 HII 16 50 14.784 -44 42 21.28           ~ 2 0
54 OH 340.78-00.10 Mas 16 50 14.84 -44 42 26.3           ~ 50 0
55 OH 339.88-01.26 Y*O 16 52 04.6776 -46 08 34.404           ~ 119 1
56 OH 344.22-00.57 Mas 17 04 07.78 -42 18 39.5           ~ 27 0
57 IRAS 17006-4215 HII 17 04 12.669 -42 19 53.13           ~ 23 1
58 OH 345.50+00.35 Mas 17 04 22.91 -40 44 21.7           ~ 50 0
59 OH 345.00-00.22 Mas 17 05 09.5 -41 29 04           ~ 34 0
60 IRAS 17016-4124 SFR 17 05 11.160 -41 29 06.00           ~ 75 0
61 NGC 6334A HII 17 20 19.3 -35 54 55           ~ 123 0
62 NGC 6334B rG 17 20 21.810 -35 52 48.25           ~ 113 0
63 NGC 6334 HII 17 20 53 -36 07.9           ~ 740 0
64 OH 351.41+00.64 Mas 17 20 53.4 -35 47 01           ~ 58 0
65 NAME NGC 6334F (C) HII 17 20 53.45 -35 47 02.6           ~ 244 1
66 GAL 351.58-00.35 HII 17 25 25.2 -36 12 46           ~ 40 0
67 MMB G351.581-00.353 cor 17 25 25.220 -36 12 45.34           ~ 44 0
68 OH 351.75-00.53 Mas 17 26 42.57 -36 09 17.6           ~ 74 1
69 IRAS 17233-3606 HII 17 26 42.8 -36 09 17           ~ 98 0
70 GAL 354.61+00.47 HII 17 30 16.8 -33 13 53           ~ 3 0
71 OH 354.61+00.47 Mas 17 30 17.13 -33 13 55.1           ~ 35 0
72 OH 359.62-00.25 Mas 17 45 39.0697 -29 23 30.265           ~ 35 0
73 GAL 009.62+00.19 HII 18 06 13.9 -20 31 44           ~ 226 0
74 OH 009.621+00.196 Mas 18 06 14.6600 -20 31 31.700           ~ 56 0
75 MMB G010.472+00.027 cor 18 08 38.2290 -19 51 50.262           ~ 83 1
76 GAL 010.47+00.03 HII 18 08 38.4 -19 51 52           ~ 159 0
77 Caswell CH3OH 010.33-00.17 Mas 18 09 04.8 -20 05 01           ~ 1 0
78 W 31 SFR 18 10 28.6 -19 55 51           ~ 280 0
79 GAL 012.89+00.49 HII 18 11 51.3 -17 31 29           ~ 217 0
80 OH 012.889+00.489 Mas 18 11 51.4450 -17 31 29.412           ~ 48 0
81 W 33b SFR 18 13 54.68 -18 01 48.1           ~ 85 0
82 OH 012.68-00.18 Mas 18 13 54.7457 -18 01 46.588           ~ 49 0
83 W 33a Y*O 18 14 39.56547 -17 52 02.2260           ~ 746 0
84 [M91] B183155.8-083417 Mas 18 34 39.0 -08 31 36           ~ 11 0
85 Caswell CH3OH 023.01-00.41 Mas 18 34 39.9 -09 00 44           ~ 17 0
86 GAL 023.44-00.18 HII 18 34 43.6 -08 32 25           ~ 58 0
87 Caswell CH3OH 035.20-01.74 Mas 19 01 45.5 +01 13 28           ~ 21 0
88 GAL 035.20-01.74 Y*O 19 01 46.49 +01 13 24.7           ~ 78 1
89 IRAS 19110+1045 Y*O 19 13 22.0427 +10 50 53.336           ~ 132 0
90 Caswell CH3OH 045.07+00.13 Mas 19 13 22.2 +10 50 52           ~ 4 0
91 [BK2004] J193235.3+165734 Mas 19 32 35.3 +16 57 34           ~ 2 0
92 MSX6C G059.7831+00.0648 Y*O 19 43 11.2464 +23 44 03.270           ~ 159 0
93 IRAS 19410+2336 SFR 19 43 11.5 +23 44 06           ~ 160 0
94 IRAS 20126+4104 Y*O 20 14 25.8816769656 +41 13 36.879427236           B2.5-B0.5 469 0
95 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 423 1
96 Caswell CH3OH 081.88+00.78 Mas 20 38 36.8 +42 38 00           ~ 1 0
97 GAL 081.88+00.78 HII 20 38 37.7 +42 38 00           ~ 2 0
98 NAME DR 21(OH) M Rad 20 39 01 +42 29.8           ~ 91 0

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