2000ApJ...535..913S


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.14CEST19:01:25

2000ApJ...535..913S - Astrophys. J., 535, 913-927 (2000/June-1)

Probing the magnetic field structure in the W3 molecular cloud.

SCHLEUNING D.A., VAILLANCOURT J.E., HILDEBRAND R.H., DOWELL C.D., NOVAK G., DOTSON J.L. and DAVIDSON J.A.

Abstract (from CDS):

This paper presents polarization maps of the central 3'x5' region of the W3 molecular cloud at far-infrared (60 and 100 µm) and submillimeter (350 µm) wavelengths. We use the multiwavelength polarization measurements to differentiate between the emission in warm and cool dust components. We infer that the submillimeter observations trace a layer of cool dust with high column density, which we attribute to a large scale ridge of material. This ambient ridge has an orderly magnetic field with evidence for ``hourglass'' field structure; however, the field structure is qualitatively different in size and orientation compared to previous studies. The far-infrared measurements are dominated by warm dust surrounding evolved H II regions or embedded young stars. The warm dust, in contrast to the ridge, has a disrupted magnetic field that varies rapidly in the plane of the sky and along the line of sight, suggesting that the field has been distorted by the expansion of H II regions.

Abstract Copyright:

Journal keyword(s): ISM: H II Regions - Infrared: ISM: Continuum - ISM: Individual: Alphanumeric: W3 - ISM: Magnetic Fields - Polarization - Stars: Formation

Simbad objects: 26

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Number of rows : 26

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 W 3j HII 02 25 27.32 +62 03 43.4           ~ 16 1
2 NAME W 3 SMS 3 smm 02 25 29.5 +62 06 01           ~ 11 0
3 W 3d HII 02 25 29.8 +62 06 27           ~ 35 0
4 [KSP2003] J022531.18+620624.5 HII 02 25 31.18 +62 06 24.5           O8V-B0.5V 93 1
5 NAME W 3 SMS 2 smm 02 25 31.2 +62 06 26           ~ 10 0
6 W 3h HII 02 25 32.00 +62 06 59.3           ~ 24 1
7 W 3g HII 02 25 32.04 +62 05 51.8           ~ 12 0
8 W 3e HII 02 25 35.1 +62 05 35           ~ 24 2
9 GAL 133.71+01.22 HII 02 25 38.1 +62 05 52           ~ 73 0
10 NAME W 3 SMS 1 smm 02 25 40.3 +62 05 53           ~ 10 0
11 W 3f HII 02 25 40.51 +62 05 40.7           O9V-B2V 34 0
12 NAME W3 IRS 5 Y*O 02 25 40.54 +62 05 51.4           B1 322 0
13 IC 1795 HII 02 25 43.5 +62 06 13           ~ 227 0
14 [KSP2003] J022544.26+620616.2 HII 02 25 44.26 +62 06 16.2           O6.5V-O7.5V 34 0
15 W 3k HII 02 25 44.9 +62 03 41           ~ 18 1
16 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 928 2
17 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 942 3
18 NAME Heart Nebula HII 02 32.7 +61 27           ~ 271 1
19 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 989 2
20 NAME Flame Nebula HII 05 41 42.7 -01 54 44           ~ 690 1
21 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1125 0
22 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1056 1
23 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1849 1
24 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1455 0
25 W 51 SNR 19 23 50 +14 06.0           ~ 1118 1
26 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 928 0

    Equat.    Gal    SGal    Ecl

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2019.10.14-19:01:26

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