2022ApJ...941..122C

Query : 2022ApJ...941..122C

2022ApJ...941..122C - Astrophys. J., 941, 122 (2022/December-3)

The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament.

CHING T.-C., QIU K., LI D., REN Z., LAI S.-P., BERRY D., PATTLE K., FURUYA R., WARD-THOMPSON D., JOHNSTONE D., KOCH P.M., LEE C.W., HOANG T., HASEGAWA T., KWON W., BASTIEN P., ESWARAIAH C., WANG J.-W., KIM K.H., HWANG J., SOAM A., LYO A.-R., LIU J., LE GOUELLEC V.J.M., ARZOUMANIAN D., WHITWORTH A., DI FRANCESCO J., POIDEVIN F., LIU T., COUDE S., TAHANI M., LIU H.-L., ONAKA T., LI D., TAMURA M., CHEN Z., TANG X., KIRCHSCHLAGER F., BOURKE T.L., BYUN D.-Y., CHEN M., CHEN H.-R.V., CHEN W.P., CHO J., CHOI Y., CHOI Y., CHOI M., CHRYSOSTOMOU A., CHUNG E.J., DAI Y.S., DIEP P.N., DOI Y., DUAN Y., DUAN H.-Y., EDEN D., FANCIULLO L., FIEGE J., FISSEL L.M., FRANZMANN E., FRIBERG P., FRIESEN R., FULLER G., GLEDHILL T., GRAVES S., GREAVES J., GRIFFIN M., GU Q., HAN I., HAYASHI S., HOUDE M., HULL C.L.H., INOUE T., INUTSUKA S.-I., IWASAKI K., JEONG I.-G., KONYVES V., KANG J.-H., KANG M., KAROLY J., KATAOKA A., KAWABATA K., KEMPER F., KIM J., KIM M.-R., KIM S., KIM H., KIM K.-T., KIM G., KIRK J., KOBAYASHI M.I.N., KUSUNE T., KWON J., LACAILLE K., LAW C.-Y., LEE S.-S., LEE H., LEE J.-E., LEE C.-F., LEE Y.-H., LI G., LI H.-B., LIN S.-J., LIU S.-Y., LU X., MAIRS S., MATSUMURA M., MATTHEWS B., MORIARTY-SCHIEVEN G., NAGATA T., NAKAMURA F., NAKANISHI H., NGOC N.B., OHASHI N., PARK G., PARSONS H., PERETTO N., PRIESTLEY F., PYO T.-S., QIAN L., RAO R., RAWLINGS M., RAWLINGS J., RETTER B., RICHER J., RIGBY A., SADAVOY S., SAITO H., SAVINI G., SETA M., SHIMAJIRI Y., SHINNAGA H., TANG Y.-W., TOMISAKA K., TRAM L.N., TSUKAMOTO Y., VITI S., WANG H., WU J., XIE J., YANG M.-Z., YEN H.-W., YOO H., YUAN J., YUN H.-S., ZENKO T., ZHANG C.-P., ZHANG Y., ZHANG G., ZHOU J., ZHU L., DE LOOZE I., ANDRE P., DOWELL C.D., EYRES S., FALLE S., ROBITAILLE J.-F. and VAN LOO S.

Abstract (from CDS):

We present 850 μm dust polarization observations of the massive DR21 filament from the B-fields In STar-forming Region Observations (BISTRO) survey, using the POL-2 polarimeter and the SCUBA-2 camera on the James Clerk Maxwell Telescope. We detect ordered magnetic fields perpendicular to the parsec-scale ridge of the DR21 main filament. In the subfilaments, the magnetic fields are mainly parallel to the filamentary structures and smoothly connect to the magnetic fields of the main filament. We compare the POL-2 and Planck dust polarization observations to study the magnetic field structures of the DR21 filament on 0.1-10 pc scales. The magnetic fields revealed in the Planck data are well-aligned with those of the POL-2 data, indicating a smooth variation of magnetic fields from large to small scales. The plane-of-sky magnetic field strengths derived from angular dispersion functions of dust polarization are 0.6-1.0 mG in the DR21 filament and ∼0.1 mG in the surrounding ambient gas. The mass-to-flux ratios are found to be magnetically supercritical in the filament and slightly subcritical to nearly critical in the ambient gas. The alignment between column density structures and magnetic fields changes from random alignment in the low-density ambient gas probed by Planck to mostly perpendicular in the high-density main filament probed by James Clerk Maxwell Telescope. The magnetic field structures of the DR21 filament are in agreement with MHD simulations of a strongly magnetized medium, suggesting that magnetic fields play an important role in shaping the DR21 main filament and subfilaments.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Interstellar magnetic fields - Star-forming regions - Interstellar filaments - Submillimetre astronomy - Polarimetry

Simbad objects: 24

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Number of rows : 24
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 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1454 1
2 Barnard 1 MoC 03 33 16.3 +31 07 51           ~ 325 0
3 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 207 0
4 LDN 1642 MoC 04 35 18 -14 13.9           ~ 153 0
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4430 0
6 NAME Ori A MoC 05 38 -07.1           ~ 3019 0
7 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1379 0
8 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 744 2
9 NAME Vela C Cld 08 57 -43.2           ~ 180 0
10 NAME Cha-Mus DNe 12 15 -76.7           ~ 37 0
11 NAME Musca Cld 12 23 -71.3           ~ 222 0
12 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 286 0
13 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3636 1
14 NGC 6334 HII 17 20 53 -36 07.9           ~ 683 0
15 M 16 OpC 18 18 45.1 -13 47 31           ~ 1029 1
16 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1103 2
17 NAME Aql Rift DNe 18 32 -01.0           ~ 316 1
18 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 491 0
19 W 51 SNR 19 23 50 +14 06.0           ~ 1278 1
20 NAME Cyg X BL? 20 30 04.7973633 +40 51 36.002197           ~ 849 1
21 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 410 0
22 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1058 0
23 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 468 2
24 NAME Gould Belt PoG ~ ~           ~ 874 1

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