2019ApJ...872..207A

Query : 2019ApJ...872..207A

2019ApJ...872..207A - Astrophys. J., 872, 207-207 (2019/February-3)

Magnetic field structure of dense cores using spectroscopic methods.

AUDDY S., MYERS P.C., BASU S., HARJU J., PINEDA J.E. and FRIESEN R.K.

Abstract (from CDS):

We develop a new "core field structure" (CFS) model to predict the magnetic field strength and magnetic field fluctuation profile of dense cores using gas kinematics. We use spatially resolved observations of the nonthermal velocity dispersion from the Green Bank Ammonia survey along with column density maps from SCUBA-2 to estimate the magnetic field strength across seven dense cores located in the L1688 region of Ophiuchus. The CFS model predicts the profile of the relative field fluctuation, which is related to the observable dispersion in the direction of the polarization vectors. Within the context of our model, we find that all of the cores have a transcritical mass-to-flux ratio.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: clouds - ISM: magnetic fields - stars: formation

Simbad objects: 21

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Number of rows : 21
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 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
2 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
3 LDN 1471 DNe 03 48.0 +32 54           ~ 349 0
4 NAME Kutner's Cloud MoC 04 32 44.6 +24 23 13           ~ 283 0
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
6 NAME f-Shaped Filament in Orion Cld 05 35.0 -05 30           ~ 133 0
7 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
8 VSSG 30 Y*O 16 26 44.19504 -24 34 48.3492           ~ 138 0
9 NAME rho Oph C Cloud MoC 16 26 53.1 -24 32 31           ~ 80 0
10 NAME rho Oph C-N PoC 16 26 57.2 -24 31 39           ~ 12 0
11 HGBS J162658.9-243422 cor 16 26 59.60 -24 34 25.3           ~ 22 0
12 NAME rho Oph E MoC 16 27 02.0 -24 38 31           ~ 65 0
13 JCMTLSG J162704.8-243914 cor 16 27 04.65 -24 39 13.3           ~ 20 0
14 CRBR 2422.8-3423 Y*O 16 27 24.61320 -24 41 03.4080           ~ 101 1
15 NAME rho Oph F MoC 16 27 37.3 -24 42 28           ~ 65 0
16 [GY92] 312 Y*O 16 27 38.94456 -24 40 20.6724           M2.5 52 0
17 JCMTLSG J162758.6-243339 cor 16 27 58.56 -24 33 39.6           ~ 2 0
18 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
19 YLW 58 TT* 16 28 16.5129208176 -24 36 58.054939128   18.5   16.55 14.46 M4 119 0
20 DCld 001.6+03.8 DNe 17 35 47.50 -25 32 59.0           ~ 63 0
21 NAME Gould Belt PoG ~ ~           ~ 956 1

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