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2024ApJ...962..136W - Astrophys. J., 962, 136 (2024/February-3)

Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-mass Star-forming Region NGC 2264: Global Properties and Local Magnetogravitational Configurations.

WANG J.-W., KOCH P.M., CLARKE S.D., FULLER G., PERETTO N., TANG Y.-W., YEN H.-W., LAI S.-P., OHASHI N., ARZOUMANIAN D., JOHNSTONE D., FURUYA R., INUTSUKA S.-I., LEE C.W., WARD-THOMPSON D., LE GOUELLEC V.J.M., LIU H.-L., FANCIULLO L., HWANG J., PATTLE K., POIDEVIN F., TAHANI M., ONAKA T., RAWLINGS M.G., CHUNG E.J., LIU J., LYO A.-R., PRIESTLEY F., HOANG T., TAMURA M., BERRY D., BASTIEN P., CHING T.-C., COUDE S., KWON W., CHEN M., ESWARAIAH C., SOAM A., HASEGAWA T., QIU K., BOURKE T.L., BYUN D.-Y., CHEN Z., CHEN H.-R.V., CHEN W.P., CHO J., CHOI M., CHOI Y., CHOI Y., CHRYSOSTOMOU A., DAI S., DI FRANCESCO J., DIEP P.N., DOI Y., DUAN Y., DUAN H.-Y., EDEN D., FIEGE J., FISSEL L.M., FRANZMANN E., FRIBERG P., FRIESEN R., GLEDHILL T., GRAVES S., GREAVES J., GRIFFIN M., GU Q., HAN I., HAYASHI S., HOUDE M., INOUE T., IWASAKI K., JEONG I.-G., KONYVES V., KANG J.-H., KANG M., KAROLY J., KATAOKA A., KAWABATA K., KHAN Z., KIM M.-R., KIM K.-T., KIM K.H., KIM S., KIM J., KIM H., KIM G., KIRCHSCHLAGER F., 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., LI D., LI H.-B., LI G., LI D., LIN S.-J., LIU T., LIU S.-Y., LU X., MAIRS S., MATSUMURA M., MATTHEWS B., MORIARTY-SCHIEVEN G., NAGATA T., NAKAMURA F., NAKANISHI H., NGOC N.B., PARK G., PARSONS H., PYO T.-S., QIAN L., RAO R., RAWLINGS J., RETTER B., RICHER J., RIGBY A., SADAVOY S., SAITO H., SAVINI G., SETA M., SHARMA E., SHIMAJIRI Y., SHINNAGA H., TANG X., THUONG H.D., TOMISAKA K., TRAM L.N., TSUKAMOTO Y., VITI S., WANG H., WHITWORTH A., WU J., XIE J., YANG M.-Z., 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 report 850 μm continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B-fields In STar forming Regions Observations large program on the James Clerk Maxwell Telescope. These data reveal a well-structured nonuniform magnetic field in the NGC 2264C and 2264D regions with a prevailing orientation around 30° from north to east. Field strength estimates and a virial analysis of the major clumps indicate that NGC 2264C is globally dominated by gravity, while in 2264D, magnetic, gravitational, and kinetic energies are roughly balanced. We present an analysis scheme that utilizes the locally resolved magnetic field structures, together with the locally measured gravitational vector field and the extracted filamentary network. From this, we infer statistical trends showing that this network consists of two main groups of filaments oriented approximately perpendicular to one another. Additionally, gravity shows one dominating converging direction that is roughly perpendicular to one of the filament orientations, which is suggestive of mass accretion along this direction. Beyond these statistical trends, we identify two types of filaments. The type I filament is perpendicular to the magnetic field with local gravity transitioning from parallel to perpendicular to the magnetic field from the outside to the filament ridge. The type II filament is parallel to the magnetic field and local gravity. We interpret these two types of filaments as originating from the competition between radial collapsing, driven by filament self-gravity, and longitudinal collapsing, driven by the region's global gravity.

Journal keyword(s): Collapsing clouds - Interstellar filaments - Molecular clouds - Interstellar magnetic fields - Interstellar medium - Polarimetry - Interstellar dynamics - Star forming regions - Submillimeter astronomy - Young massive clusters

Simbad objects: 14

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