2024ApJ...977...32C

Query : 2024ApJ...977...32C

2024ApJ...977...32C - Astrophys. J., 977, 32 (2024/December-2)

The JCMT BISTRO Survey: The Magnetic Fields of the IC 348 Star-forming Region.

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

Abstract (from CDS):

We present 850 μm polarization observations of the IC 348 star-forming region in the Perseus molecular cloud as part of the B-fields In STar-forming Region Observation survey. We study the magnetic properties of two cores (HH 211 MMS and IC 348 MMS) and a filamentary structure of IC 348. We find that the overall field tends to be more perpendicular than parallel to the filamentary structure of the region. The polarization fraction decreases with intensity, and we estimate the trend by power law and the mean of the Rice distribution fittings. The power indices for the cores are much smaller than 1, indicative of possible grain growth to micron size in the cores. We also measure the magnetic field strengths of the two cores and the filamentary area separately by applying the Davis-Chandrasekhar-Fermi method and its alternative version for compressed medium. The estimated mass-to-flux ratios are 0.45-2.20 and 0.63-2.76 for HH 211 MMS and IC 348 MMS, respectively, while the ratios for the filament are 0.33-1.50. This result may suggest that the transition from subcritical to supercritical conditions occurs at the core scale (∼0.05 pc) in the region. In addition, we study the energy balance of the cores and find that the relative strength of turbulence to the magnetic field tends to be stronger for IC 348 MMS than for HH 211 MMS. The result could potentially explain the different configurations inside the two cores: a single protostellar system in HH 211 MMS and multiple protostars in IC 348 MMS.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Interstellar medium - Interstellar magnetic fields - Interstellar filaments - Molecular clouds - Star formation - Polarimetry - Submillimeter astronomy

Simbad objects: 17

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Number of rows : 17
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 LDN 1448 DNe 03 22.5 +30 35           ~ 546 0
2 LDN 1455 DNe 03 28 00.6480 +30 07 58.800           ~ 198 1
3 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
4 Barnard 1 MoC 03 33 16.3 +31 07 51           ~ 350 0
5 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
6 HH 211 Y*O 03 43 56.52 +32 00 52.8           ~ 414 0
7 NAME HH 211-mm Y*O 03 43 56.816 +32 00 50.06           ~ 66 1
8 NAME IC 348 MMS cor 03 43 56.84 +32 03 04.7           ~ 87 1
9 NAME FGN ISM 03 43 58.8 +32 01 52           ~ 27 0
10 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
11 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 965 0
12 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1249 2
13 NAME NGC 2071 IR SFR 05 47 04.4 +00 21 49           ~ 75 0
14 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 312 1
15 LDN 1689 DNe 16 32 22.5 -24 28 29           ~ 153 0
16 LDN 43 DNe 16 34 29.3 -15 47 11           ~ 147 1
17 NAME Gould Belt PoG ~ ~           ~ 956 1

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