2007MNRAS.374...29D

Query : 2007MNRAS.374...29D

2007MNRAS.374...29D - Mon. Not. R. Astron. Soc., 374, 29-53 (2007/January-1)

WFCAM, Spitzer/IRAC and SCUBA observations of the massive star-forming region DR21/W75 - I. The collimated molecular jets.

DAVIS C.J., KUMAR M.S.N., SANDELL G., FROEBRICH D., SMITH M.D. and CURRIE M.J.

Abstract (from CDS):

We present wide-field near-infrared (IR) images of the DR21/W75 high-mass star-forming region, obtained with the Wide Field Camera (WFCAM) on the United Kingdom Infrared Telescope. Broad-band JHK and narrow-band H21-0S(1) images are compared to archival mid-IR images from the Spitzer Space Telescope, and 850-µm dust-continuum maps obtained with the Submillimeter Common User Bolometer Array (SCUBA). Together these data give a complete picture of dynamic star formation across this extensive region, which includes at least four separate star-forming sites in various stages of evolution. The H2data reveal knots and bow shocks associated with more than 50 individual flows. Most are well collimated, and at least five qualify as parsec-scale flows. Most appear to be driven by embedded, low-mass protostars. The orientations of the outflows, particularly from the few higher mass sources in the region (DR21, DR21(OH), W75N and ERO 1), show some degree of order, being preferentially orientated roughly orthogonal to the chain of dusty cores that runs north-south through DR21. Clustering may inhibit disc accretion and therefore the production of outflows; we certainly do not see enhanced outflow activity from clusters of protostars. Finally, although the low-mass protostellar outflows are abundant and widely distributed, the current generation does not provide sufficient momentum and kinetic energy to account for the observed turbulent motions in the DR21/W75 giant molecular clouds. Rather, multiple epochs of outflow activity are required over the million-year time-scale for turbulent decay.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): circumstellar matter - stars: formation - ISM: individual: DR21 - ISM: individual: DR21(OH) - ISM: individual: W75 - ISM: jets and outflows - ISM: kinematics and dynamics - infrared: stars

Nomenclature: Table 1 col(1): [DKS2007] NN (Nos 1-37). Fig.2, Table 1, col(9): [DKS2007] DR21-IRSNN (Nos 1-10). Fig.3, Table 1, col(9): [DKS2007] W75N-IRSNN (Nos 1-14). Fig.6, Table 1, col(9): [DKS2007] L906E-IRSN (Nos 1-6). Table 2: [DKS2007] DR21WW, [DKS2007] DR21WN, N=5, [DKS2007] DR21(OH)WW N=5, [DKS2007] W75NWN, N=8. Table 3: [DKS2007] A NN-N N=81. Table 4, col(2): [DKS2007] a (Nos a-n, i missing). Table 2: [CGC93] FIR NNa (Nos 4-12, 5b) added.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 96

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Number of rows : 96
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 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
2 HH 212 HH 05 43 51.41 -01 02 53.1           ~ 443 1
3 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
4 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 837 0
5 LDN 906 DNe 20 36.8 +42 11           ~ 9 0
6 2MASS J20365781+4211303 Y*O 20 36 57.81 +42 11 30.3           ~ 5 0
7 2MASS J20371766+4216374 NIR 20 37 17.66 +42 16 37.5           ~ 3 0
8 LDN 906E reg 20 37.4 +42 16           ~ 4 0
9 2MASS J20372634+4215518 NIR 20 37 26.35 +42 15 51.9           ~ 2 0
10 2MASS J20372772+4214130 Y*O 20 37 27.72 +42 14 13.0           ~ 3 0
11 [DKS2007] 33 Y*O 20 37 30.73 +42 13 59.2           ~ 2 0
12 2MASS J20373191+4213017 Y*O 20 37 31.92 +42 13 01.7           ~ 2 0
13 2MASS J20374724+4238422 Y*O 20 37 47.24 +42 38 42.2           ~ 3 0
14 2MASS J20374733+4240529 NIR 20 37 47.33 +42 40 53.0           ~ 2 0
15 2MASS J20374746+4238370 Y*? 20 37 47.4613131648 +42 38 37.076162820           ~ 7 0
16 2MASS J20375536+4240468 Y*O 20 37 55.37 +42 40 46.9           ~ 5 0
17 [DKS2007] W75N-IRS13 Y*O 20 37 57.77 +42 38 54.0           ~ 2 0
18 ZTF J203807.10+423852.0 Mi* 20 38 07.1093969280 +42 38 52.176676812           ~ 7 0
19 MSX6C G081.8324+00.8597 LP* 20 38 08.2734005009 +42 38 36.650000592           ~ 6 0
20 [DKS2007] W75N-W3 IR 20 38 10.65 +42 38 04.6           ~ 1 0
21 [DKS2007] W75N-W2 IR 20 38 11.82 +42 37 34.6           ~ 1 0
22 [CGC93] FIR 12 IR 20 38 15.40 +42 32 44.8           ~ 1 0
23 NAME Diamond Ring Cluster Cl* 20 38 18 +42 04.5           ~ 3 0
24 [DKS2007] W75N-W1 IR 20 38 19.47 +42 36 52.5           ~ 1 0
25 [DKS2007] W75N-SW IR 20 38 31.02 +42 36 27.1           ~ 1 0
26 [DKS2007] W75N-W IR 20 38 31.02 +42 37 47.6           ~ 1 0
27 [DKS2007] W75N-N IR 20 38 33.18 +42 39 45.7           ~ 1 0
28 2MASS J20383537+4237137 NIR 20 38 35.374 +42 37 13.71           ~ 2 0
29 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 423 1
30 [S2001] MM 2 mm 20 38 35.92 +42 37 32.1           ~ 14 0
31 [S2001] MM 1 mm 20 38 36.39 +42 37 34.1           ~ 17 0
32 NAME W75N(B) cor 20 38 36.44 +42 37 34.1           ~ 52 0
33 [HRB81] W75N(Ba) HII 20 38 36.445 +42 37 34.82           ~ 55 0
34 [TGR97] VLA 2 HII 20 38 36.482 +42 37 34.08           ~ 63 0
35 [HRB81] W75N(Bb) HII 20 38 36.486 +42 37 33.44           ~ 38 0
36 [DKS2007] W75N-IRS 1 IR 20 38 36.76 +42 37 29.4           ~ 17 0
37 2MASS J20383728+4239329 Y*O 20 38 37.2895752312 +42 39 33.064403580           ~ 3 0
38 [HRB81] W75N(A) HII 20 38 37.6 +42 38 00           ~ 10 0
39 2MASS J20383772+4237593 NIR 20 38 37.725 +42 37 59.38           ~ 1 0
40 [S2001] MM 5 mm 20 38 37.78 +42 37 59.0           ~ 4 0
41 2MASS J20383869+4235342 NIR 20 38 38.6926549176 +42 35 34.265734944           ~ 1 0
42 2MASS J20383882+4237176 Y*O 20 38 38.8211026680 +42 37 17.651260020           ~ 5 0
43 [HRB81] W75N(C) HII 20 38 39.1 +42 36 51           ~ 8 0
44 2MASS J20384016+4239534 Y*O 20 38 40.160 +42 39 53.50           ~ 2 0
45 [CGC93] FIR 11 Y*O 20 38 43.85 +42 29 04.0           ~ 4 0
46 [DKS2007] DR21W2 IR 20 38 45.36 +42 18 50.0           ~ 1 0
47 [CGC93] FIR 10 IR 20 38 45.50 +42 28 10.3           ~ 1 0
48 [KMH2014] J203846.35+422439.51 Y*O 20 38 46.37 +42 24 39.7           ~ 3 0
49 [DKS2007] W75N-E IR 20 38 47.28 +42 38 02.0           ~ 1 0
50 [CGC93] FIR 9 IR 20 38 49.10 +42 27 40.3           ~ 1 0
51 [CGC93] FIR 4 IR 20 38 51.52 +42 27 15.6           ~ 1 0
52 [DKS2007] DR21W1 IR 20 38 54.50 +42 19 14.0           ~ 2 0
53 [DKS2007] DR21-IRS 5 IR 20 38 55.85 +42 21 54.1           ~ 1 0
54 2MASS J20385691+4218588 NIR 20 38 56.91 +42 18 58.8           ~ 2 0
55 2MASS J20385719+4222409 Y*O 20 38 57.19 +42 22 41.0           ~ 12 0
56 [DKS2007] DR21(OH)SW IR 20 38 57.20 +42 21 47.4           ~ 1 0
57 [DKS2007] B 7-1 IR 20 38 58.0 +42 22 51           ~ 2 0
58 NAME DR 21(OH) W PoC 20 38 58.8 +42 22 20           ~ 15 0
59 [RSK89] DR 21(OH) SW PoC 20 38 59.0 +42 22 19           ~ 2 0
60 [CLZ2017] Cyg-N38 cor 20 38 59.00 +42 22 23.9           ~ 11 0
61 2MASS J20385932+4220159 Y*O 20 38 59.3253836568 +42 20 15.953079192           ~ 3 0
62 [DKS2007] DR21(OH)N Y*O 20 38 59.44 +42 23 43.9           ~ 4 0
63 NAME DR 21(OH) N2 PoC 20 38 59.7 +42 23 43           ~ 4 0
64 2MASS J20385982+4218580 Y*O 20 38 59.82312 +42 18 58.0752           ~ 4 0
65 NAME DR 21(OH) N PoC 20 38 59.9 +42 23 33           ~ 19 0
66 NAME DR 21(OH) N1 PoC 20 39 00.0 +42 23 24           ~ 5 0
67 [CGC93] FIR 8 IR 20 39 00.09 +42 27 32.0           ~ 1 0
68 GAL 081.74+00.59 cor 20 39 00.37 +42 24 36.6           ~ 27 0
69 [DKS2007] DR21-IRS 1 IR 20 39 00.4 +42 19 37           ~ 9 0
70 2MASS J20390047+4224369 Y*O 20 39 00.47544 +42 24 36.9612           ~ 11 0
71 [H73b] A Rad 20 39 00.59 +42 19 36.0           ~ 9 0
72 [DKS2007] DR21S IR 20 39 00.70 +42 18 11.5           ~ 2 0
73 NAME DR 21 S IR 20 39 00.7 +42 19 15           ~ 15 0
74 NAME DR 21(OH) M Rad 20 39 01 +42 29.8           ~ 91 0
75 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 427 0
76 NAME DR 21(OH) S PoC 20 39 01.1 +42 22 12           ~ 20 0
77 [H73b] B Rad 20 39 01.13 +42 19 41.0           ~ 8 0
78 [DKS2007] 36 HII 20 39 01.21 +42 19 54.0           ~ 11 0
79 [H73b] C Rad 20 39 01.30 +42 19 31.7           ~ 10 0
80 [CLZ2017] Cyg-N48 cor 20 39 01.36 +42 22 06.7           ~ 23 0
81 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1121 0
82 NAME Cyg X FIR 36 Rad 20 39 01.6 +42 22 47           ~ 124 1
83 MSX6C G081.7522+00.5906 Y*O 20 39 01.9930 +42 24 59.290           ~ 36 0
84 2MASS J20390285+4222001 Y*O 20 39 02.85336 +42 22 00.1992           ~ 11 0
85 NAME W 75S FIR 3 Y*O 20 39 02.97 +42 25 52.5           ~ 21 0
86 [DKS2007] 13 Y*O 20 39 03.72 +42 25 29.6           ~ 12 0
87 [DKS2007] B 5-1 IR 20 39 04.5 +42 22 44           ~ 2 0
88 [DKS2007] DR21SE IR 20 39 05.99 +42 18 19.4           ~ 1 0
89 2MASS J20390727+4215347 Y*O 20 39 07.27536 +42 15 34.7724           ~ 5 0
90 [DKS2007] DR21E IR 20 39 08.25 +42 19 55.9           ~ 1 0
91 2MASS J20390833+4215449 Y*O 20 39 08.33880 +42 15 44.9496           ~ 5 0
92 2MASS J20390950+4224268 NIR 20 39 09.50 +42 24 26.8           ~ 1 0
93 2MASS J20391672+4216090 Y*O 20 39 16.72824 +42 16 09.0912           ~ 17 0
94 [DKS2007] A 3-1 IR 20 39 19.2 +42 14 53           ~ 2 0
95 [CGC93] FIR 5b IR 20 39 19.28 +42 16 02.0           ~ 1 0
96 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 892 1

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