2010ApJ...720..603H

Query : 2010ApJ...720..603H

2010ApJ...720..603H - Astrophys. J., 720, 603-607 (2010/September-1)

Observational determination of the turbulent ambipolar diffusion scale and magnetic field strength in molecular clouds.

HEZAREH T., HOUDE M., McCOEY C. and LI H.-B.

Abstract (from CDS):

We study the correlation of the velocity dispersion of the coexisting molecules H13CN and H13CO+ and the turbulent energy dissipation scale in the DR21(OH) star-forming region. The downshift of the H13CO+ spectrum relative to H13CN is consistent with the presence of ambipolar diffusion at dissipation length scales that helps the process of turbulent energy dissipation, but at a different cutoff for ions compared with the neutrals. We use our observational data to calculate a turbulent ambipolar diffusion length scale L' =~ 17 mpc and a strength of Bpos=~ 1.7 mG for the plane of the sky component of the magnetic field in DR21(OH).

Abstract Copyright: ∼

Journal keyword(s): ISM: clouds - ISM: individual objects: DR21(OH) - ISM: magnetic fields - turbulence

Simbad objects: 8

goto Full paper

goto View the references in ADS

Number of rows : 8
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 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
2 M 78 RNe 05 46 45.8 +00 04 45   8.0       ~ 397 0
3 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
4 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0
5 NAME DR 21(OH) MM 2 Mas 20 39 00.4 +42 22 44           ~ 41 0
6 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 427 0
7 NAME DR 21(OH) MM 1 Mas 20 39 01.1 +42 22 49           ~ 43 0
8 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1121 0

To bookmark this query, right click on this link: simbad:objects in 2010ApJ...720..603H and select 'bookmark this link' or equivalent in the popup menu