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Query : 2003MNRAS.341..551C |
2003MNRAS.341..551C - Mon. Not. R. Astron. Soc., 341, 551-568 (2003/May-2)
Spectra of OH masers at 6035 and 6030 MHz.
CASWELL J.L.
Abstract (from CDS):
Towards many targets, the present observations have provided the first high-sensitivity search for the 6030-MHz transition and yielded 33 detections. All of the 6030-MHz maser features have 6035-MHz counterparts closely matching in velocity. For matching features, the 6030-MHz emission is most commonly weaker than the 6035-MHz emission by an order of magnitude but, in a few cases, is several times stronger. The detection statistics are well accounted for by very recent developments in maser modelling. However, the occasional occurrence of 6030-MHz maser emission stronger than at 6035-MHz poses a new challenge for the theory.
Spectra with good frequency resolution at 6030 and 6035 MHz yield many valuable measurements of magnetic fields. At each transition, the field can be inferred from a small frequency separation between the right-hand and left-hand circularly polarized features, attributed to the Zeeman effect in a magnetic field of a few mG. In the many instances where a `Zeeman pair' on the 6035-MHz spectrum has features matched by the 6030-MHz spectrum, this provides convincing corroboration of the magnetic field, in both direction and magnitude.
Several prominent absorption features occur at 6035 MHz, and usually have matching absorption at 6030 MHz of similar, or slightly smaller, depth.
Abstract Copyright: 2003 RAS
Journal keyword(s): masers - stars: formation - HII regions - ISM: molecules - radio lines: ISM
CDS comments: Table 1 : 323.459-0.279 is a misprint for -0.079 (Caswell OH 323.459-00.079).
Simbad objects: 91
Number of rows : 91 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | OH 240.32+00.07 | Mas | 07 44 51.9676 | -24 07 41.372 | ~ | 11 | 0 | |||||
2 | OH 284.35-00.42 | Mas | 10 24 10.73 | -57 52 33.3 | ~ | 7 | 0 | |||||
3 | OH 285.26-00.05 | Mas | 10 31 29.87 | -58 02 18.0 | ~ | 22 | 0 | |||||
4 | OH 294.51-01.62 | Mas | 11 35 32.25 | -63 14 43.2 | ~ | 18 | 0 | |||||
5 | OH 300.97+01.15 | Mas | 12 34 53.29 | -61 39 40.0 | ~ | 31 | 0 | |||||
6 | OH 305.21+00.03 | Mas | 13 11 16.8912 | -62 45 55.008 | ~ | 19 | 0 | |||||
7 | OH 306.32-00.36 | Mas | 13 21 23.01 | -63 00 29.5 | ~ | 11 | 0 | |||||
8 | OH 309.92+00.48 | Mas | 13 50 41.78 | -61 35 10.2 | ~ | 50 | 0 | |||||
9 | IRAS 14026-6145 | * | 14 06 18.459 | -62 00 15.76 | ~ | 5 | 0 | |||||
10 | IRAS 14030-6144 | cor | 14 06 38.75088 | -61 58 23.7576 | ~ | 33 | 0 | |||||
11 | OH 311.64-00.38 | Mas | 14 06 38.77 | -61 58 23.1 | ~ | 32 | 0 | |||||
12 | OH 316.76-00.01 | Mas | 14 44 56.34 | -59 48 00.8 | ~ | 19 | 0 | |||||
13 | OH 319.39-00.02 | Mas | 15 03 17.41 | -58 36 12.2 | ~ | 6 | 0 | |||||
14 | IRAS 15254-5621 | Y*? | 15 29 19.33 | -56 31 22.8 | ~ | 85 | 0 | |||||
15 | OH 328.30+00.44 | Mas | 15 54 06.48 | -53 11 40.3 | ~ | 18 | 0 | |||||
16 | Caswell CH3OH 328.808+00.633 | Mas | 15 55 48.45 | -52 43 06.6 | ~ | 19 | 0 | |||||
17 | Caswell CH3OH 328.809+00.633 | Mas | 15 55 48.70 | -52 43 05.5 | ~ | 24 | 0 | |||||
18 | OH 328.24-00.55 | Mas | 15 57 58.28 | -53 59 22.7 | ~ | 37 | 0 | |||||
19 | OH 329.339+00.148 | Mas | 16 00 33.15 | -52 44 39.9 | ~ | 4 | 0 | |||||
20 | AGAL G329.066-00.307 | HII | 16 01 09.8 | -53 16 01 | ~ | 39 | 0 | |||||
21 | OH 329.07-00.31 | Y*O | 16 01 09.999 | -53 16 02.94 | ~ | 37 | 0 | |||||
22 | OH 329.405-00.459 | Mas | 16 03 32.16 | -53 09 30.5 | ~ | 10 | 0 | |||||
23 | OH 330.9-00.2 | OH* | 16 09 35.53920 | -51 54 14.1084 | O-rich | 12 | 0 | |||||
24 | OH 331.542-00.066 | Mas | 16 12 09.02 | -51 25 47.6 | ~ | 12 | 0 | |||||
25 | Caswell H2O 331.51-00.10 | Mas | 16 12 09.1 | -51 28 53 | ~ | 12 | 0 | |||||
26 | OH 331.5-00.1 | Mas | 16 12 09.890 | -51 28 37.67 | ~ | 15 | 0 | |||||
27 | OH 332.826-00.549 | Mas | 16 20 10.85 | -50 53 14.2 | ~ | 16 | 0 | |||||
28 | OH 333.14-00.43 | Mas | 16 21 02.82 | -50 35 12.0 | ~ | 19 | 0 | |||||
29 | OH 333.6-00.2 | Mas | 16 22 11.042 | -50 05 56.25 | ~ | 22 | 0 | |||||
30 | OH 336.36-00.14 | Mas | 16 33 29.17 | -48 03 43.9 | ~ | 18 | 0 | |||||
31 | OH 336.83+00.02 | Mas | 16 34 38.28 | -47 36 32.2 | ~ | 19 | 0 | |||||
32 | OH 336.941-00.156 | Mas | 16 35 55.19 | -47 38 45.4 | ~ | 9 | 0 | |||||
33 | Caswell CH3OH 336.983-00.183 | Mas | 16 36 12.41 | -47 37 58.2 | ~ | 25 | 0 | |||||
34 | IRAS 16325-4731 | cor | 16 36 12.41856 | -47 37 57.8280 | ~ | 27 | 0 | |||||
35 | OH 338.28+00.54 | Y*O | 16 38 09.08 | -46 11 03.3 | ~ | 30 | 0 | |||||
36 | OH 337.61-00.06 | Mas | 16 38 09.54 | -47 04 59.9 | ~ | 25 | 0 | |||||
37 | MMB G337.705-00.053 | Mas | 16 38 29.63 | -47 00 35.5 | ~ | 26 | 0 | |||||
38 | OH 337.40-00.41 | Mas | 16 38 50.52 | -47 28 00.2 | ~ | 40 | 0 | |||||
39 | OH 338.08+00.01 | Mas | 16 39 39.04 | -46 41 28.0 | ~ | 19 | 0 | |||||
40 | OH 338.92+00.55 | Y*O | 16 40 34.064 | -45 42 08.68 | ~ | 20 | 0 | |||||
41 | MMB G339.282+00.136 | Mas | 16 43 43.11 | -45 42 08.0 | ~ | 9 | 0 | |||||
42 | MMB G339.053-00.315 | Mas | 16 44 48.99 | -46 10 13.0 | ~ | 10 | 0 | |||||
43 | OH 339.6-00.1 | Y*O | 16 46 05.99 | -45 36 43.3 | ~ | 78 | 0 | |||||
44 | OH 340.78-00.10 | Mas | 16 50 14.84 | -44 42 26.3 | ~ | 50 | 0 | |||||
45 | OH 339.88-01.26 | Y*O | 16 52 04.6776 | -46 08 34.404 | ~ | 103 | 0 | |||||
46 | OH 345.01+01.79 | Mas | 16 56 47.58 | -40 14 25.8 | ~ | 71 | 0 | |||||
47 | OH 343.93+00.12 | Mas | 17 00 10.91 | -42 07 19.3 | ~ | 18 | 0 | |||||
48 | OH 344.39+00.03 | Mas | 17 02 08.62 | -41 47 10.3 | ~ | 6 | 0 | |||||
49 | OH 345.487+00.314 | Mas | 17 04 28.24 | -40 46 28.7 | ~ | 12 | 0 | |||||
50 | MMB G345.003-00.224 | Mas | 17 05 11.23 | -41 29 06.9 | ~ | 14 | 0 | |||||
51 | OH 345.70-00.09 | Y*O | 17 06 50.635 | -40 50 59.49 | ~ | 35 | 0 | |||||
52 | OH 345.4-00.9 | Mas | 17 09 35.42 | -41 35 57.1 | ~ | 31 | 0 | |||||
53 | OH 347.63+00.15 | Y*? | 17 11 51.064 | -39 09 29.03 | ~ | 40 | 0 | |||||
54 | OH 348.55-00.97 | Mas | 17 19 20.41 | -39 03 51.6 | ~ | 30 | 0 | |||||
55 | OH 350.113+00.095 | Mas | 17 19 25.609 | -37 10 05.38 | ~ | 17 | 0 | |||||
56 | OH 348.698-01.027 | Mas | 17 19 58.923 | -38 58 14.13 | ~ | 5 | 0 | |||||
57 | OH 351.41+00.64 | Mas | 17 20 53.4 | -35 47 01 | ~ | 58 | 0 | |||||
58 | OH 350.686-00.491 | Mas | 17 23 28.63 | -37 01 48.8 | ~ | 11 | 0 | |||||
59 | OH 351.58-00.35 | Mas | 17 25 25.183 | -36 12 44.66 | ~ | 18 | 0 | |||||
60 | OH 351.75-00.53 | Mas | 17 26 42.57 | -36 09 17.6 | ~ | 74 | 1 | |||||
61 | OH 353.41-00.36 | Mas | 17 30 26.18 | -34 41 45.6 | ~ | 65 | 0 | |||||
62 | IRAS 17279-3311 | Y*? | 17 31 15.5976886344 | -33 14 04.872124932 | ~ | 35 | 0 | |||||
63 | OH 355.34+00.15 | Mas | 17 33 29.06 | -32 47 58.9 | ~ | 28 | 0 | |||||
64 | OH 359.14+00.03 | Mas | 17 43 25.6109 | -29 39 17.551 | ~ | 35 | 0 | |||||
65 | OH 000.66-00.03 | Mas | 17 47 20.12 | -28 23 06.2 | ~ | 60 | 1 | |||||
66 | OH 000.658-00.042 | Mas | 17 47 20.485 | -28 23 44.13 | ~ | 17 | 0 | |||||
67 | OH 003.910+00.001 | Mas | 17 54 38.75 | -25 34 44.8 | ~ | 11 | 0 | |||||
68 | MMB G008.669-00.356 | Mas | 18 06 18.99 | -21 37 32.2 | ~ | 40 | 0 | |||||
69 | OH 011.03+00.06 | Mas | 18 09 39.84 | -19 21 20.3 | ~ | 31 | 0 | |||||
70 | OH 010.62-00.38 | Mas | 18 10 28.65 | -19 55 49.5 | ~ | 28 | 0 | |||||
71 | OH 011.90-00.14 | Mas | 18 12 11.44 | -18 41 28.6 | ~ | 25 | 0 | |||||
72 | OH 015.03-00.68 | Mas | 18 20 24.8111 | -16 11 35.316 | ~ | 26 | 1 | |||||
73 | OH 019.48+00.15 | Mas | 18 26 00.39 | -11 52 21.9 | ~ | 6 | 0 | |||||
74 | OH 020.23+00.07 | Mas | 18 27 44.56 | -11 14 54.6 | ~ | 11 | 0 | |||||
75 | AGAL G022.434-00.169 | cor | 18 32 44.1639 | -09 24 33.608 | ~ | 18 | 0 | |||||
76 | OH 028.201-00.049 | Mas | 18 42 58.197 | -04 13 59.41 | ~ | 8 | 0 | |||||
77 | Caswell OH 032.74-00.08 | Mas | 18 51 21.8624 | -00 12 06.220 | ~ | 13 | 0 | |||||
78 | OH 034.26+00.15 | Mas | 18 53 18.68 | +01 15 00.3 | ~ | 31 | 0 | |||||
79 | Caswell OH 035.02+00.35 | Mas | 18 54 00.6576 | +02 01 19.217 | ~ | 12 | 0 | |||||
80 | OH 035.2-00.7 | Mas | 18 58 13.0517 | +01 40 35.674 | ~ | 43 | 0 | |||||
81 | OH 035.200-01.736 | Mas | 19 01 45.5420 | +01 13 32.690 | ~ | 16 | 0 | |||||
82 | IRAS 19002+0654 | Y*O | 19 02 39.5357424288 | +06 59 07.788621768 | ~ | 22 | 1 | |||||
83 | IRAS 19035+0641 | Y*O | 19 06 01.6288 | +06 46 36.140 | ~ | 78 | 0 | |||||
84 | OH 043.149+00.013 | Mas | 19 10 11.05 | +09 05 22.1 | ~ | 2 | 0 | |||||
85 | OH 043.165+00.013 | Mas | 19 10 13.034 | +09 06 12.75 | ~ | 3 | 0 | |||||
86 | OH 043.2+00.0 | Y*O | 19 10 21.819 | +09 05 02.83 | O2-3.5If* | 27 | 0 | |||||
87 | OH 043.796-00.127 | Mas | 19 11 53.9868 | +09 35 50.325 | ~ | 81 | 0 | |||||
88 | OH 045.122+00.133 | Mas | 19 13 27.942 | +10 53 34.84 | ~ | 8 | 0 | |||||
89 | OH 045.466+00.045 | Mas | 19 14 25.66 | +11 09 26.5 | ~ | 4 | 0 | |||||
90 | OH 049.489-00.388 | Mas | 19 23 43.8700 | +14 30 29.500 | ~ | 4 | 0 | |||||
91 | OH 049.490-00.388 | Mas | 19 23 43.93 | +14 30 34.9 | ~ | 4 | 0 |
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