2005A&A...434..613S

Query : 2005A&A...434..613S

2005A&A...434..613S - Astronomy and Astrophysics, volume 434, 613-621 (2005/5-1)

Masers as signposts of high-mass protostars. A water maser survey of methanol maser sources.

SZYMCZAK M., PILLAI T. and MENTEN K.M.

Abstract (from CDS):

The 22GHz H2O maser line was observed towards 79 candidate high-mass protostellar objects from a flux-limited sample of 6.7GHz methanol sources. The emission was detected in 41 sources, towards 28 of these for the first time. The detection rate of 52% was similar to rates reported for other samples of high-mass protostars selected mainly with far-infrared (FIR) colour criteria. The median value of H2O maser luminosity of 10–5.5L☉ is equal to that of the CH3OH maser luminosity, whereas the median OH maser luminosity was found to be ∼1.5 orders of magnitude lower. Comparison of the velocity ranges showing maser emission implies that for the majority of sources the H2O and CH3OH maser lines originate from different regions. The percentage of sources with emission in two or three of the maser species, their association with radio continuum and IR emission and the maser and IR luminosities are consistent with the view that evolutionary phases with H2O and CH3OH masers largely overlap and precede the OH maser phase, while at a later stage OH and CH3OH masers may coexist. Strong correlations of OH and CH3OH maser luminosities with IR luminosity and only a marginal correlation of H2O and IR luminosity confirm current pumping schemes of all three maser lines.

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+A/434/613): table1.dat table2.dat table3.dat>

Simbad objects: 79

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Number of rows : 79
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 [M91] B182455.8-111624 Mas 18 27 44.1 -11 14 54           ~ 12 0
2 OH 020.1-00.1 SFR 18 28 10.37 -11 28 49.8           ~ 111 0
3 [SHK2000] 18278-0936 Mas 18 30 35.7 -09 34 26           ~ 5 0
4 [SHK2000] 18278-1009 Mas 18 30 36.5 -10 06 44           ~ 5 0
5 [M91] B182816.1-095101 Mas 18 31 02 -09 49.1           ~ 7 0
6 [SHK2000] 18282-1024 Mas 18 31 06.3 -10 21 37           ~ 5 0
7 [SHK2000] 18290-0924 Mas 18 31 45.6 -09 22 44           ~ 5 0
8 Caswell CH3OH 022.34-00.16 Mas 18 32 32.1 -09 29 10           ~ 4 0
9 [SKH2002] 22.45-0.17 Mas 18 32 45.8 -09 24 06           ~ 3 0
10 [SHK2000] 18305-0826 Mas 18 33 13.1 -08 23 56           ~ 5 0
11 [SVG93] 183108.2-082540 Mas 18 33 47.4 -08 21 37           ~ 5 0
12 [SVG93] 183146.3-084539 Mas 18 34 30.8 -08 42 42           ~ 5 0
13 [M91] B183155.8-083417 Mas 18 34 39.0 -08 31 36           ~ 11 0
14 Caswell CH3OH 023.01-00.41 Mas 18 34 39.9 -09 00 44           ~ 17 0
15 IRAS 18321-0820 Y*O 18 34 51.5650 -08 18 21.305           ~ 45 0
16 [SHK2000] 18322-0721 Mas 18 34 53.0 -07 19 11           ~ 5 0
17 [SHK2000] 18321-0854 Mas 18 34 54.5 -08 50 04           ~ 7 0
18 [M91] B183232.3-073824 Mas 18 35 09.4 -07 34 58           ~ 11 0
19 OH 024.148-00.009 Mas 18 35 20.974 -07 48 55.32           ~ 7 0
20 [SHK2000] 18326-0802 Mas 18 35 22.9 -08 01 11           ~ 5 0
21 [SKH2002] 24.51-0.05 Mas 18 36 08.7 -07 30 55           ~ 3 0
22 Caswell CH3OH 024.79+00.08 Mas 18 36 12.1 -07 12 13           ~ 8 0
23 Caswell CH3OH 024.85+00.09 Mas 18 36 17.2 -07 09 01           ~ 5 0
24 [SKH2002] 24.93+0.08 Mas 18 36 29.2 -07 05 05           ~ 4 0
25 [VGM95] 183436.9-064115 Mas 18 37 18.3 -06 38 38           ~ 7 0
26 [SKH2002] 24.64-0.33 Mas 18 37 25.2 -07 31 53           ~ 4 0
27 OH 025.709+00.044 Mas 18 38 03.1450 -06 24 15.190           ~ 16 0
28 [SVG93] 183626.4-062714 Mas 18 39 04.7 -06 24 17           ~ 10 0
29 [SHK2000] 18372-0537 Mas 18 39 51.8 -05 34 52           ~ 5 0
30 [SHK2000] 18372-0541 Mas 18 39 52.8 -05 38 48           ~ 5 0
31 [SKH2002] 27.21+0.26 Mas 18 40 03.8 -04 58 09           ~ 4 0
32 AGAL G027.221+00.137 Y*O 18 40 31 -05 01.1           ~ 22 0
33 [GVS2000] 18379-0500 Mas 18 40 33.9 -04 57 18           ~ 6 0
34 [VGM95] 183758.2-054628 Mas 18 40 38.6 -05 43 37           ~ 5 0
35 [SHK2000] 18392-0436 Mas 18 41 47.5 -04 33 11           ~ 5 0
36 Caswell CH3OH 027.36-00.16 Mas 18 41 50.6 -05 01 47           ~ 14 0
37 [SKH2002] 28.85+0.50 Mas 18 42 12.8 -03 24 26           ~ 5 0
38 [SKH2002] 28.69+0.41 Mas 18 42 13.6 -03 35 07           ~ 4 0
39 [SKH2002] 28.82+0.37 Mas 18 42 35.2 -03 29 26           ~ 5 0
40 Caswell CH3OH 028.15+00.00 Mas 18 42 40.9 -04 15 26           ~ 11 0
41 [SHK2000] 18402-0403 Mas 18 42 54.5 -04 00 04           ~ 5 0
42 [SKH2002] 28.53+0.12 Mas 18 42 57.7 -03 51 59           ~ 4 0
43 [SKH2002] 28.19-0.05 Mas 18 42 57.8 -04 14 21           ~ 3 0
44 [SKH2002] 28.02-0.44 Mas 18 44 02.1 -04 34 14           ~ 5 0
45 [SVG93] 184145.8-042052 Mas 18 44 24.5 -04 17 45           ~ 6 0
46 Caswell CH3OH 028.84-00.23 Mas 18 44 47.6 -03 44 49           ~ 4 0
47 [M91] B184212.4-034908 Mas 18 44 50.0 -03 45 23           ~ 3 0
48 [SKH2002] 29.31-0.15 Mas 18 45 23.1 -03 17 23           ~ 4 0
49 AGAL G029.862-00.044 Mas 18 45 59.437 -02 45 05.78           ~ 29 0
50 [M91] B184327.1-024236 Mas 18 46 03.6 -02 39 24           ~ 14 1
51 [SKH2002] 29.97-0.04 Mas 18 46 11.4 -02 39 14           ~ 4 0
52 [SHK2000] 18438-0222 Mas 18 46 23.7 -02 17 56           ~ 6 0
53 [M91] B184400.5-014829 Mas 18 46 36.4 -01 45 24           ~ 4 0
54 AGAL G030.779+00.231 Mas 18 46 42 -01 48.6           ~ 22 0
55 Caswell CH3OH 030.79+00.20 Mas 18 46 48.2 -01 48 46           ~ 8 0
56 Caswell CH3OH 030.20-00.17 Mas 18 47 02.5 -02 30 38           ~ 9 0
57 [SKH2002] 30.22-0.19 Mas 18 47 09.8 -02 29 38           ~ 3 0
58 IRAS 18446-0209 Y*O 18 47 18.91 -02 06 17.0           ~ 25 0
59 AGAL G030.703-00.067 cor 18 47 36.6 -02 00 54           ~ 66 0
60 [SKH2002] 30.59-0.13 Mas 18 47 37.2 -02 08 46           ~ 3 0
61 Caswell CH3OH 030.76-00.05 Mas 18 47 38.9 -01 57 25           ~ 3 1
62 AGAL G030.818-00.056 cor 18 47 47.0 -01 54 28           ~ 164 0
63 [SKH2002] 30.40-0.29 Mas 18 47 51.2 -02 23 15           ~ 4 0
64 [SKH2002] 33.10-0.06 Mas 18 51 58.9 +00 07 27           ~ 3 0
65 OH 033.1-00.1 Mas 18 52 07.3 +00 08 06           ~ 21 0
66 [SHK2000] 18497+0022 Mas 18 52 10.6 +00 25 09           ~ 4 0
67 [BK2004] J185328.7+003158 Mas 18 53 28.7 +00 31 58           ~ 15 0
68 [SHK2000] 18527+0301 Mas 18 55 15.6 +03 04 42           ~ 7 0
69 [SKH2002] 36.70+0.09 Mas 18 58 00.9 +03 23 30           ~ 5 0
70 [SKH2002] 37.60+0.42 Mas 18 58 28.5 +04 20 34           ~ 4 0
71 [SKH2002] 37.02-0.03 Mas 18 58 59.9 +03 37 40           ~ 4 0
72 [SHK2000] 18566+0408 Mas 18 59 11.6 +04 12 08           ~ 5 0
73 [SKH2002] 37.47-0.11 Mas 19 00 06.7 +03 59 27           ~ 4 0
74 [SHK2000] 18577+0358 Mas 19 00 14.4 +04 02 35           ~ 5 0
75 [SKH2002] 39.10+0.48 Mas 19 00 59.5 +05 42 28           ~ 3 0
76 [SKH2002] 38.20-0.08 Mas 19 01 22.8 +04 39 10           ~ 4 0
77 [SKH2002] 38.26-0.08 Mas 19 01 28.7 +04 42 02           ~ 3 0
78 [SHK2000] 18592+0426 Mas 19 01 47.6 +04 30 32           ~ 5 0
79 [SKH2002] 38.03-0.30 Mas 19 01 50.0 +04 23 54           ~ 4 0

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