1995A&AS..111...95Z

Query : 1995A&AS..111...95Z

1995A&AS..111...95Z - Astron. Astrophys., Suppl. Ser., 111, 95-114 (1995/May-2)

Studies of dense molecular cores in regions of massive star formation. II. CS J=2-1 survey of southern H2O masers in the longitude range l=260-310deg.

ZINCHENKO I., MATTILA K. and TORISEVA M.

Abstract (from CDS):

We searched for the CS J=2-1 emission towards 30 southern H2O and OH masers with the SEST radio telescope (29 H2O and H2O/OH masers and 1 OH maser). We detected and mapped 24 CS emitting regions associated probably with 27 H2O masers. The C34S J=2-1 and CO J=1-0 lines were also observed at the grid positions closest to the CS peaks. Here we present the CS maps and the spectra at the peak positions along with the CO and C34S spectra. We derive the C34S column densities in the LTE approximation and discuss briefly the spatial and kinematic structure of the sources. The association with the IRAS point sources and small scale structure sources is examined. We estimate the kinematic distances to the cores and derive their sizes, masses and mean densities. The velocity differences between the masers and CS cores are analyzed. The CO and CS spectra towards several sources demonstrate deep absorption features. We argue that they can be due to extended low excitation foreground cloud(s).

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+AS/111/95): table1 table2 table3 table4>

Nomenclature: Table 1: [ZMT95] LLL.ll+B.bb N=30

Simbad objects: 62

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Number of rows : 62
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 IRAS 08303-4303 HII 08 32 07.5 -43 13 46           ~ 26 0
2 [HLB98] SEST 27 Mas 08 32 07.5 -43 13 46           ~ 5 1
3 DCld 264.3+01.5 DNe 08 54 42 -42 54.8           ~ 68 0
4 GAL 264.28+01.48 Mas 08 56 27.8 -43 05 05           ~ 7 0
5 RCW 34 HII 08 56 28.1 -43 05 58   10.5 11.21     ~ 99 0
6 V* V391 Vel Or* 08 56 28.109952 -43 05 55.40028 12.61 12.71 11.73 11.50   O8/8.5V 83 1
7 Caswell H2O 267.94-01.06 Mas 08 59 03.6 -47 30 47           ~ 13 0
8 IRAS 08573-4718 IR 08 59 04.4 -47 30 37           ~ 8 0
9 Caswell H2O 265.14+01.45 Mas 08 59 24.7 -43 45 22           ~ 9 0
10 MSX5C G265.1485+01.4474 HII 08 59 25.2 -43 45 46           ~ 34 1
11 GAL 268.4-00.9 HII 09 01 54.3 -47 43 59           ~ 55 1
12 [BSG89] 268.42-0.85 Mas 09 01 54.3 -47 43 59           ~ 7 0
13 IRAS 09017-4813 IR 09 03 25.4 -48 25 47           ~ 5 0
14 IRAS 09017-4814 * 09 03 25.5 -48 26 29           K0III 10 1
15 [BE83] Maser 269.11-01.12 Mas 09 03 26 -48 25.9           ~ 4 0
16 IRAS 09017-4819 IR 09 03 27.4 -48 31 21           ~ 3 0
17 IRAS 09018-4816 HII 09 03 32.8 -48 28 40           ~ 28 0
18 [BSG89] 269.16-1.14 Mas 09 03 32.8 -48 28 40           ~ 5 0
19 [BE83] Maser 270.26+00.83 Mas 09 16 43 -47 56.6           ~ 7 0
20 IRAS 09149-4743 mul 09 16 43.2 -47 56 26           ~ 26 1
21 [KC97c] G270.3+00.8 HII 09 16 52.8 -47 57 36           ~ 28 1
22 [BE83] Maser 284.17-00.7 Mas 10 21 30.9 -58 05 16           ~ 1 0
23 MR 22 PN 10 21 33.85920 -58 05 47.6628           A2Ie 105 0
24 [BE83] Maser 284.30-00.34 Mas 10 24 10 -57 47.2           ~ 4 0
25 IRAS X1022-575 IR 10 24 10.2 -57 46 35           ~ 1 0
26 Caswell H2O 284.36-00.42 Mas 10 24 11.2 -57 53 03           ~ 6 0
27 IRAS 10295-5746 HII 10 31 28.6 -58 02 07           ~ 13 0
28 OH 285.26-00.05 Mas 10 31 29.87 -58 02 18.0           ~ 22 0
29 2MASS J10383046-5819007 Y*? 10 38 30.46 -58 19 00.8           ~ 25 0
30 [HLB98] SEST 44 Mas 10 38 30.6 -58 19 00           ~ 6 0
31 IRAS 10414-5919 IR 10 43 20.8 -59 35 33           ~ 5 0
32 [BE83] Maser 287.38-00.62 Mas 10 43 35 -59 34.8           ~ 2 0
33 [SRM89] 10591-6040 Mas 11 01 10.2 -60 57 03           ~ 2 0
34 IRAS 10591-6040 mul 11 01 10.28 -60 57 09.8           ~ 17 0
35 IRAS 11094-6105 * 11 11 32.09 -61 21 44.2           ~ 4 0
36 Caswell H2O 291.27-00.71 Mas 11 11 53.28 -61 18 24.1           ~ 14 0
37 NAME NGC 3576 IRS 1 HII 11 11 54.8 -61 18 26           ~ 32 1
38 [BE83] Maser 291.28-00.71 Mas 11 11 55.1 -61 18 50           ~ 2 0
39 IRAS 11101-5829 Y*O 11 12 18.19248 -58 46 20.8452           ~ 33 1
40 OH 291.57-00.43 Mas 11 15 05.67 -61 09 41.0           ~ 14 0
41 [BE83] Maser 291.64-00.56 Mas 11 15 13.1 -61 18 18           ~ 4 0
42 IRAS 11332-6258 HII 11 35 31.9 -63 14 51           ~ 35 0
43 OH 294.51-01.62 Mas 11 35 32.25 -63 14 43.2           ~ 18 0
44 IRAS 11368-6312 HII 11 39 12.6 -63 28 49           ~ 16 0
45 [BSG89] 294.97-1.73 Mas 11 39 13.94 -63 29 04.6           ~ 14 0
46 IRAS 12073-6233 mul 12 10 00.4 -62 49 57           ~ 51 0
47 Caswell H2O 298.22-00.34 Mas 12 10 01 -62 50.0           ~ 5 1
48 [GS70] 298.2-00.3 HII 12 10 01.886 -62 50 00.46           ~ 67 1
49 IRAS 12146-6212 HII 12 17 24.5 -62 28 54           ~ 10 0
50 [BE83] Maser 299.02+00.15 Mas 12 17 27.2 -62 27 54           ~ 3 0
51 OH 300.97+01.15 Mas 12 34 53.29 -61 39 40.0           ~ 31 0
52 GUM 43 HII 12 34 54.4 -61 39 25           ~ 61 1
53 [BE83] Maser 301.12-00.20 Mas 12 35 24.3 -63 01 10           ~ 7 0
54 IRAS 12326-6245 HII 12 35 35.184 -63 02 29.40           ~ 55 0
55 OH 305.20+00.21 Mas 13 11 10.4904 -62 34 38.856           ~ 46 0
56 GAL 305.20+00.21 HII 13 11 11.7 -62 34 44           ~ 38 0
57 GRS G305.36 +00.18 HII 13 12 29.2 -62 34 29           ~ 22 0
58 Caswell H2O 305.36+00.21 Mas 13 12 34.0 -62 33 57           ~ 5 0
59 OH 305.36+00.15 Mas 13 12 35.86 -62 37 17.9           ~ 20 0
60 IRAS 13134-6242 mul 13 16 42.9 -62 58 45           ~ 39 0
61 [SRM89] 13134-6242 Mas 13 16 42.9 -62 58 45           ~ 3 0
62 [WBH98] 13134-6242 HII 13 16 46.3 -62 58 35           ~ 23 0

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