2007MNRAS.382..699C

Query : 2007MNRAS.382..699C

2007MNRAS.382..699C - Mon. Not. R. Astron. Soc., 382, 699-716 (2007/December-1)

Magnetic fields in massive star-forming regions.

CURRAN R.L. and CHRYSOSTOMOU A.

Abstract (from CDS):

We present the largest sample of high-mass star-forming regions observed using submillimetre imaging polarimetry. The data were taken using the Submillimetre Common User Bolometer Array (SCUBA) in conjunction with the polarimeter on the James Clerk Maxwell Telescope (JCMT) in Hawaii. In total, 16 star-forming regions were observed, although some of these contain multiple cores. The polarimetry implies a variety of magnetic field morphologies, with some very ordered fields. We see a decrease in polarization percentage for seven of the cores. The magnetic field strengths estimated for 14 of the cores, using the corrected Chandrasekhar and Fermi (CF) method, range from <0.1 mG to almost 6 mG. These magnetic fields are weaker on these large scales when compared to previous Zeeman measurements from maser emission, implying the role of the magnetic field in star formation increases in importance on smaller scales. Analysis of the alignment of the mean field direction and the outflow directions reveals no relation for the whole sample, although direct comparison of the polarimetry maps suggests good alignment (to at least one outflow direction per source) in seven out of the 15 sources with outflows.

Abstract Copyright: 2007 DIAS. Journal compilation © 2007 RAS

Journal keyword(s): techniques: polarimetric - stars: formation - stars: magnetic fields - submillimetre

Simbad objects: 45

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Number of rows : 45
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 LDN 1287 DNe 00 36 47.5 +63 29 02           ~ 90 0
2 GM 1-33 HH 00 36 47.5 +63 29 02           ~ 120 0
3 HHL 5 HII 03 07 24.2 +58 30 45           ~ 150 0
4 [WK96] 34 Y*O 03 07 24.550 +58 30 52.76           ~ 8 0
5 NAME Per Arm PoG 03 30 +45.0           ~ 1513 0
6 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 742 2
7 [NWA2006] SMM 1 smm 16 32 12.5 -25 03 53           ~ 2 0
8 NGC 6334A HII 17 20 19.3 -35 54 55           ~ 121 0
9 NGC 6334AE reg 17 20 23.9 -35 54 55           ~ 1 0
10 NGC 6334 HII 17 20 53 -36 07.9           ~ 682 0
11 NAME HH 80-81 IRS HII 18 19 11.8 -20 47 35           ~ 148 0
12 2MASS J18191220-2047297 Y*O 18 19 12.21 -20 47 29.7           B1 133 0
13 RAFGL 2136 Y*O 18 22 26.52888 -13 30 14.0400           ~ 285 0
14 SNR G035.2-01.8 SNR 19 01.6 +01 14           ~ 153 0
15 NAME W 48 West Core smm 19 01 42.5 +01 13 33           ~ 9 0
16 V* R CrA Ae* 19 01 53.6764322232 -36 57 08.299341828 12.781 12.651 11.917 11.242 10.412 B5IIIpe 478 1
17 NAME Coronet Cluster Cl* 19 01 54 -36 57.2           ~ 94 1
18 W 49n HII 19 10 13.2 +09 06 12           ~ 469 3
19 [DJW84] W49 E HII 19 10 13.30 +09 06 12.5           ~ 14 0
20 W 49 SFR 19 10 20 +09 07.7           ~ 574 1
21 NAME W 49SE IR 19 10 21.8 +09 05 03           ~ 5 1
22 IRAS 20126+4104 Y*O 20 14 25.8816769656 +41 13 36.879427236           B2.5-B0.5 440 0
23 LBN 077.61+01.59 HII 20 20 39.3 +39 37 52           ~ 78 0
24 RAFGL 2591 Y*O 20 29 24.8230 +40 11 19.590           ~ 622 0
25 NAME Cyg X BL? 20 30 04.7973633 +40 51 36.002197           ~ 843 1
26 NAME Cyg Complex reg 20 32 +45.0           ~ 600 0
27 NAME DR 21(OH) W PoC 20 38 58.8 +42 22 20           ~ 15 0
28 NAME DR 21(OH) N PoC 20 38 59.9 +42 23 33           ~ 19 0
29 NAME DR 21(OH) MM 2 Mas 20 39 00.4 +42 22 44           ~ 40 0
30 NAME DR 21(OH) M Rad 20 39 01 +42 29.8           ~ 88 0
31 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 409 0
32 NAME DR 21(OH) S PoC 20 39 01.1 +42 22 12           ~ 20 0
33 NAME DR 21(OH) MM 1 Mas 20 39 01.1 +42 22 49           ~ 42 0
34 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1053 0
35 NAME Cyg X FIR 36 Rad 20 39 01.6 +42 22 47           ~ 118 1
36 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 872 1
37 NAME Cepheus Ring ISM 21 43 +62.0           ~ 4 0
38 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 658 2
39 IRAS 22176+6303 Y*O 22 19 18.23 +63 18 47.5           ~ 595 0
40 NAME SH 2-140 IRS 1 Y*O 22 19 18.277 +63 18 45.82           ~ 197 0
41 BG 2247+59 LP? 22 49 29.0034646608 +59 54 56.182749876           ~ 107 1
42 NAME Cep A HW 2 Y*O 22 56 17.9 +62 01 49           B0.5 227 0
43 NAME Cepheus A SFR 22 56 17.9 +62 01 49           ~ 738 2
44 SH 2-152 HII 22 58 40.8107767416 +58 46 59.226036024           ~ 138 1
45 LBN 111.14-00.72 HII 23 16 03.94 +60 02 00.9           ~ 99 2

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