2019ApJ...877...88C

Query : 2019ApJ...877...88C

2019ApJ...877...88C - Astrophys. J., 877, 88-88 (2019/June-1)

The JCMT BISTRO Survey: the magnetic field of the Barnard 1 Star-forming Region.

COUDE S., BASTIEN P., HOUDE M., SADAVOY S., FRIESEN R., DI FRANCESCO J., JOHNSTONE D., MAIRS S., HASEGAWA T., KWON W., LAI S.-P., QIU K., WARD-THOMPSON D., BERRY D., CHEN M.C.-Y., FIEGE J., FRANZMANN E., HATCHELL J., LACAILLE K., MATTHEWS B.C., MORIARTY-SCHIEVEN G.H., PON A., ANDRE P., ARZOUMANIAN D., ASO Y., BYUN D.-Y., ESWARAIAH C., CHEN H.-R., CHEN W.P., CHING T.-C., CHO J., CHOI M., CHRYSOSTOMOU A., CHUNG E.J., DOI Y., DRABEK-MAUNDER E., DOWELL C.D., EYRES S.P.S., FALLE S., FRIBERG P., FULLER G., FURUYA R.S., GLEDHILL T., GRAVES S.F., GREAVES J.S., GRIFFIN M.J., GU Q., HAYASHI S.S., HOANG T., HOLLAND W., INOUE T., INUTSUKA S.-I., IWASAKI K., JEONG I.-G., KANAMORI Y., KATAOKA A., KANG J.-H., KANG M., KANG S.-J., KAWABATA K.S., KEMPER F., KIM G., KIM J., KIM K.-T., KIM K.H., KIM M.-R., KIM S., KIRK J.M., KOBAYASHI M.I.N., KOCH P.M., KWON J., LEE J.-E., LEE C.W., LEE S.-S., LI D., LI D., LI H.-B., LIU H.-L., LIU J., LIU S.-Y., LIU T., VAN LOO S., LYO A.-R., MATSUMURA M., NAGATA T., NAKAMURA F., NAKANISHI H., OHASHI N., ONAKA T., PARSONS H., PATTLE K., PERETTO N., PYO T.-S., QIAN L., RAO R., RAWLINGS M.G., RETTER B., RICHER J., RIGBY A., ROBITAILLE J.-F., SAITO H., SAVINI G., SCAIFE A.M.M., SETA M., SHINNAGA H., SOAM A., TAMURA M., TANG Y.-W., TOMISAKA K., TSUKAMOTO Y., WANG H., WANG J.-W., WHITWORTH A.P., YEN H.-W., YOO H., YUAN J., ZENKO T., ZHANG C.-P., ZHANG G., ZHOU J., ZHU L. (The B-fields In STar-forming Regions Observations (BISTRO)

Abstract (from CDS):

We present the POL-2 850 µm linear polarization map of the Barnard 1 clump in the Perseus molecular cloud complex from the B-fields In STar-forming Region Observations survey at the James Clerk Maxwell Telescope. We find a trend of decreasing polarization fraction as a function of total intensity, which we link to depolarization effects toward higher-density regions of the cloud. We then use the polarization data at 850 µm to infer the plane-of-sky orientation of the large-scale magnetic field in Barnard 1. This magnetic field runs north-south across most of the cloud, with the exception of B1-c, where it turns more east-west. From the dispersion of polarization angles, we calculate a turbulence correlation length of 5.0 ± 2.''5 (1500 au) and a turbulent-to-total magnetic energy ratio of 0.5 ± 0.3 inside the cloud. We combine this turbulent-to-total magnetic energy ratio with observations of NH3 molecular lines from the Green Bank Ammonia Survey to estimate the strength of the plane-of-sky component of the magnetic field through the Davis-Chandrasekhar-Fermi method. With a plane-of-sky amplitude of 120 ± 60 µG and a criticality criterion λc = 3.0 ± 1.5, we find that Barnard 1 is a supercritical molecular cloud with a magnetic field nearly dominated by its turbulent component.

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

Journal keyword(s): ISM: clouds - ISM: individual objects: Barnard 1 - ISM: magnetic fields - polarization - stars: formation - submillimeter: ISM

Simbad objects: 27

goto Full paper

goto View the references in ADS

Number of rows : 27
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 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 1064 2
2 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1064 3
3 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
4 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 770 1
5 Barnard 1 MoC 03 33 16.3 +31 07 51           ~ 350 0
6 JCMTSE J033315.9+310656 Y*O 03 33 16.44 +31 06 52.5           ~ 45 0
7 2MASS J03331667+3107548 Y*O 03 33 16.68 +31 07 54.9           ~ 139 2
8 JCMTSE J033317.8+310932 cor 03 33 17.85 +31 09 31.9           ~ 140 0
9 [HRF2005] 3 PoC 03 33 21.3 +31 07 27           ~ 86 0
10 [KJD2006] SMM J033335+31075 PoC 03 33 21.3 +31 07 28           ~ 118 0
11 HH 789 HH 03 33 27.5 +31 07 36           ~ 8 1
12 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
13 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
14 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
15 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
16 LDN 183 MoC 15 54 12.2 -02 49 42           ~ 799 1
17 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 312 1
18 NAME rho Oph B Cloud MoC 16 27 11 -24 28.5           ~ 88 1
19 LDN 1746 DNe 17 11.3 -27 22           ~ 157 0
20 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 442 1
21 SH 2-68 N Y*O 18 29 48.09 +01 16 45.0           ~ 161 1
22 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
23 GCNM 23 Y*O 18 29 49.63 +01 15 21.9           ~ 291 2
24 AGAL G034.411+00.234 Y*O 18 53 18.0319 +01 25 25.500           ~ 108 0
25 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 427 0
26 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 507 2
27 NAME Gould Belt PoG ~ ~           ~ 956 1

To bookmark this query, right click on this link: simbad:objects in 2019ApJ...877...88C and select 'bookmark this link' or equivalent in the popup menu