2007A&A...466..247V

Query : 2007A&A...466..247V

2007A&A...466..247V - Astronomy and Astrophysics, volume 466, 247-253 (2007/4-4)

H2O maser emission from bright rimmed clouds in the southern hemisphere.

VALDETTARO R., CHAPMAN J.M., LOVELL J.E.J. and PALLA F.

Abstract (from CDS):

Water maser emission is a powerful tracer of the presence of embedded sources in dense clouds since it requires elevated temperatures (>100K) and densities (>107cm–3) that can be found in circumstellar disks and/or jets/outflows associated with Young Stellar Objects. Bright rimmed clouds compressed by ionization fronts from nearby massive stars are considered good examples of externally triggered star formation, possibly resulting in the formation of massive stars. We aim to determine the water maser emission frequency and characteristics of 45 bright rimmed clouds in the southern hemisphere identified by Sugitani & Ogura (1994ApJS...92..163S). We have used the Tidbinbilla 70-m radiotelescope to perform a high sensitivity survey at 22.2GHz of the maser emission from the 616-523 rotational transition of H2O molecules. We found 7 water maser sources out of 44 (16% detection rate), 5 being new detections. With the exception of the maser associated with BRC 68, all the other maser are characterized by low integrated fluxes and luminosities. Most maser sources fall below the correlation between the H2O and far-infrared luminosity found in other studies towards a variety of star forming regions. These results are similar to those found in the companion survey of BRCs in the northern hemisphere by Valdettaro et al. (2005A&A...443..535V). The low detection frequency and the properties of water maser emission from BRCs indicate that low-mass star formation is the most natural outcome of the external compression induced by the ionization front from nearby massive stars.

Abstract Copyright: ∼

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

Simbad objects: 110

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Number of rows : 110
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 IRAS 07162-2200 FIR 07 18 23.7 -22 06 13           ~ 4 0
2 SFO 45 Cld 07 18 23.7 -22 06 13           ~ 6 1
3 CG 1 CGb 07 19 21.5 -44 35 03           ~ 39 1
4 SFO 46 Cld 07 19 25.8 -44 35 01           ~ 5 1
5 IRAS 07178-4429 mul 07 19 25.8 -44 35 01           ~ 17 0
6 SS73 6 Be* 07 31 48.851 -19 27 33.52   13.56 12.94 13.05 12.18 Be 38 0
7 MSX6C G234.7617-00.2766 Cld 07 31 48.9 -19 27 33           ~ 6 1
8 IRAS 07329-4647 Y*? 07 34 25.5829807008 -46 54 10.608040440         16.58 ~ 6 0
9 IRAS 07334-1842 MIR 07 35 39.09720 -18 48 50.5656           ~ 14 0
10 MSX6C G234.6358+00.8281 HII 07 35 40.9 -18 48 59           ~ 10 1
11 SFO 50 Cld 07 40 28.5 -43 06 20           ~ 4 0
12 IRAS 07388-4259 FIR 07 40 28.5 -43 06 20           ~ 4 0
13 MSX6C G253.2934-01.6114 Cld 08 09 32.8 -36 05 00           ~ 11 0
14 CG 30 CGb 08 09 32.8 -36 05 00           ~ 130 0
15 2MASS J08254384-5100326 Y*O 08 25 43.85 -51 00 32.7           ~ 316 1
16 SFO 52 Cld 08 25 43.9 -51 00 37           ~ 4 0
17 SFO 53 Cld 08 26 31.7 -50 40 30           ~ 4 0
18 IRAS 08250-5030 FIR 08 26 31.7 -50 40 30           ~ 10 0
19 IRAS 08337-4028 MIR 08 35 31.00392 -40 38 24.8604           ~ 20 0
20 CD-40 4427 Y*? 08 35 31.4358526440 -40 40 19.154664732 10.07 10.43 9.90 10.03 9.54 B1V 34 1
21 SFO 54 Cld 08 35 31.7 -40 38 28           ~ 7 1
22 NGC 2626 RNe 08 35 32 -40 40.3           ~ 31 2
23 NAME Vela-D Molecular Cloud MoC 08 39 -41.0           ~ 49 0
24 MSX6C G260.7658+00.6604 Cld 08 41 13.0 -40 52 03           ~ 8 1
25 [MGL99] IRS 63 21 * 08 41 14.24 -40 52 16.9           ~ 3 1
26 IRAS 08393-4041 MIR 08 41 14.76216 -40 52 11.0784           ~ 15 1
27 SFO 56 Cld 08 42 59.5 -39 59 56           ~ 6 1
28 IRAS 08411-3949 IR 08 42 59.5 -39 59 56           ~ 4 0
29 IRAS 08423-4105 IR 08 44 07.159 -41 16 21.23           ~ 4 0
30 SFO 57 Cld 08 44 07.7 -41 16 14           ~ 7 1
31 SFO 58 Cld 08 45 25.4 -41 16 02           ~ 9 1
32 IRAS 08435-4105 IR 08 45 25.4 -41 16 02           ~ 8 0
33 NAME VELA MOL RIDGE MoC 08 53 -45.0           ~ 155 0
34 IRAS 08563-4711 HII 08 58 04.2 -47 22 57           ~ 25 2
35 VdBH 26 RNe 08 58 04.3 -47 22 46 15.52 15.41 14.20     ~ 22 1
36 IRAS 08583-4719 MIR 09 00 00.90432 -47 31 48.2664           ~ 6 0
37 MSX6C G268.0574-00.9515 Cld 09 00 01.2 -47 31 37           ~ 5 1
38 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1014 2
39 SFO 61 Cld 11 00 13.5 -59 36 09           ~ 6 1
40 IRAS 10581-5920 IR 11 00 13.5 -59 36 09           ~ 4 0
41 SFO 62 Cld 11 01 15.8 -59 51 01           ~ 8 0
42 IRAS 10591-5934 IR 11 01 15.8 -59 51 01           ~ 12 1
43 IRAS 11012-5931 FIR 11 03 18.8 -59 48 01           ~ 4 0
44 SFO 63 Cld 11 03 18.8 -59 48 01           ~ 6 0
45 BRAN 347 HII 11 11 59.8 -58 47 47           ~ 13 1
46 IRAS 11101-5829 Y*O 11 12 18.19248 -58 46 20.8452           ~ 31 0
47 MSX6C G294.2815-01.9124 Cld 11 32 55.3 -63 27 59           ~ 6 0
48 IRAS 11306-6311 IR 11 33 00.1237420632 -63 27 21.747455928           ~ 13 0
49 IRAS 11315-6259 IR 11 33 49.5 -63 16 20           ~ 5 0
50 SFO 66 Cld 11 33 49.5 -63 16 20           ~ 6 0
51 SFO 67 Cld 11 34 00.7 -63 11 19           ~ 5 0
52 IRAS 11317-6254 IR 11 34 00.7 -63 11 19           ~ 4 0
53 SFO 68 Cld 11 35 31.9 -63 14 51           ~ 7 0
54 IRAS 11332-6258 HII 11 35 31.9 -63 14 51           ~ 30 0
55 OH 294.51-01.62 Mas 11 35 32.25 -63 14 43.2           ~ 18 0
56 V* V1051 Cen EB* 11 37 48.4343499072 -63 19 23.518561512 6.28 7.18 7.16 8.11   O5.5V((f))+O8:V 147 1
57 IC 2944 OpC 11 38 20.00 -63 22 22.0           ~ 184 0
58 IRAS 11388-6306 IR 11 41 11.2 -63 23 13           ~ 4 0
59 MSX6C G295.1622-01.5825 Cld 11 41 11.2 -63 23 13           ~ 5 0
60 IRAS 11398-6251 IR 11 42 11.2 -63 07 50           ~ 5 0
61 SFO 70 Cld 11 42 11.2 -63 07 50           ~ 5 0
62 NAME Cen R1 As* 13 08 -63.0           ~ 11 1
63 IRAS 13050-6154 of? 13 08 12.15432 -62 10 22.8000           ~ 11 1
64 IRAS 13158-6217 Cld 13 19 10.9 -62 33 57           ~ 11 1
65 Cl Stock 16 OpC 13 19 26.4 -62 37 19           ~ 91 0
66 GUM 48a HII 13 19 46 -62 30.7           ~ 29 1
67 THA 17-35 Ae* 13 20 03.5823804072 -62 23 54.054672576 13.85 13.93 13.46     B8Ve 28 0
68 SFO 73 Cld 13 20 05.7 -62 24 03           ~ 6 1
69 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4339 2
70 IRAS 14159-6111 HII 14 19 42.1 -61 25 17           ~ 10 1
71 MSX6C G313.2850-00.3350 Cld 14 19 42.1 -61 25 17           ~ 12 1
72 MSX6C G327.5761-00.8497 Cld 15 55 50.4 -54 38 58           ~ 14 1
73 IRAS 15519-5430 IR 15 55 50.4667609152 -54 38 59.656961040           ~ 13 0
74 GUM 51 HII 16 10.0 -49 08           ~ 21 1
75 HD 144918 ** 16 10 29.1581960322 -49 02 47.091807995 10.4 10.735 9.961 9.956   O5/7 38 0
76 SFO 76 Cld 16 10 38.6 -49 05 52           ~ 10 1
77 IRAS 16069-4858 HII 16 10 38.698 -49 05 59.10           ~ 13 0
78 SFO 77 Cld 16 19 53.9 -25 33 39           ~ 7 0
79 IRAS 16168-2526 IR 16 19 54.7 -25 33 32   15.2 14.14     ~ 7 0
80 IRAS 16178-2501 * 16 20 50.6 -25 07 59   18.0 13.54     M 7 0
81 SFO 78 Cld 16 20 52.9 -25 08 07           ~ 7 0
82 Ass Ara OB 1 As* 16 39.5 -46 46           ~ 93 0
83 CD-48 11039 * 16 40 00.0882315576 -48 46 58.371343032   11.32 10.92 11.092   B3V 24 0
84 GUM 53 HII 16 40 00.1 -48 51 45           ~ 95 1
85 IRAS 16362-4845 MoC 16 40 00.1 -48 51 45           ~ 18 2
86 IRAS 16365-4836 IR 16 40 16.8 -48 42 24           ~ 5 0
87 MSX6C G336.6568-01.4099 Cld 16 40 16.8 -48 42 24           ~ 7 0
88 IRAS 16373-4911 FIR 16 41 08.8 -49 17 45           ~ 4 0
89 SFO 81 Cld 16 41 08.8 -49 17 45           ~ 5 0
90 NGC 6193 OpC 16 41 16.6 -48 46 37           ~ 158 0
91 HD 150135 * 16 41 19.4443334664 -48 45 47.568769200 6.19 7.00 6.88 7.33   O6.5V((f))z 124 0
92 HD 150136 SB* 16 41 20.4155898816 -48 45 46.730465028 4.98 5.78 5.65 6.93   O3.5-4III(f*)+O6IV 190 0
93 MSX6C G343.0500+02.6094 Cld 16 46 50.2 -41 13 54           ~ 8 0
94 IRAS 16438-4110 IR 16 47 21.5 -41 15 45           ~ 7 0
95 IRAS 16487-4043 IR 16 52 12.0 -40 48 09           ~ 4 0
96 SFO 83 Cld 16 52 12.0 -40 48 09           ~ 5 0
97 IRAS 16502-4002 IR 16 53 45.1 -40 07 22           ~ 4 0
98 SFO 84 Cld 16 53 45.1 -40 07 22           ~ 5 0
99 MSX6C G343.3516-00.0786 RNe 16 59 06.4 -42 42 04   13       ~ 13 0
100 CD-42 11721 Be* 16 59 06.7629322176 -42 42 08.404228224 12.16 12.28 11.00     B0IVe 168 0
101 SFO 86 Cld 17 49 36.1 -31 29 13           ~ 5 1
102 IRAS 17463-3128 IR 17 49 36.1 -31 29 13           ~ 11 0
103 V* V1749 Sgr Or* 18 02 51.57240 -24 22 08.2056           ~ 5 0
104 IRAS 17597-2422 Cld 18 02 51.6 -24 22 08           ~ 7 0
105 IRAS 18012-2407 FIR 18 04 16.8 -24 06 59           ~ 5 0
106 SFO 88 Cld 18 04 16.8 -24 06 59           ~ 5 0
107 SFO 89 Cld 18 09 54.3 -24 04 56           ~ 10 1
108 IRAS 18068-2405 IR 18 09 54.3 -24 04 56           ~ 6 0
109 QSO B1830-211 Bla 18 33 39.9399138048 -21 03 39.368838780     18.70 21   ~ 671 1
110 QSO B1921-293 BLL 19 24 51.05595254 -29 14 30.1210248   18.71 18.21 15.07   ~ 868 0

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