2021ApJ...912L..27C

Query : 2021ApJ...912L..27C

2021ApJ...912L..27C - Astrophys. J., 912, L27-L27 (2021/May-2)

The JCMT BISTRO survey: revealing the diverse magnetic field morphologies in Taurus dense cores with sensitive submillimeter polarimetry.

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

Abstract (from CDS):

We have obtained sensitive dust continuum polarization observations at 850 µm in the B213 region of Taurus using POL-2 on SCUBA-2 at the James Clerk Maxwell Telescope as part of the B-fields in STar-forming Region Observations (BISTRO) survey. These observations allow us to probe magnetic field (B-field) at high spatial resolution (∼2000 au or ∼0.01 pc at 140 pc) in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) that lie within the B213 filament. Using the Davis-Chandrasekhar-Fermi method, we estimate the B-field strengths in K04166, K04169, and Miz-8b to be 38 ± 14, 44 ± 16, and 12 ± 5 µG, respectively. These cores show distinct mean B-field orientations. The B-field in K04166 is well ordered and aligned parallel to the orientations of the core minor axis, outflows, core rotation axis, and large-scale uniform B-field, in accordance with magnetically regulated star formation via ambipolar diffusion taking place in K04166. The B-field in K04169 is found to be ordered but oriented nearly perpendicular to the core minor axis and large-scale B-field and not well correlated with other axes. In contrast, Miz-8b exhibits a disordered B-field that shows no preferred alignment with the core minor axis or large-scale field. We found that only one core, K04166, retains a memory of the large-scale uniform B-field. The other two cores, K04169 and Miz-8b, are decoupled from the large-scale field. Such a complex B-field configuration could be caused by gas inflow onto the filament, even in the presence of a substantial magnetic flux.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dust continuum emission - Polarimetry - Low mass stars - Dense interstellar clouds - Interstellar magnetic fields

Simbad objects: 10

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Number of rows : 10
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 HGBS J040924.1+284723 FIR 04 09 24.100 +28 47 23.00           ~ 2 0
2 LDN 1495 DNe 04 18.1 +27 37           ~ 408 1
3 HGBS J041937.7+271526 cor 04 19 37.6 +27 15 31           ~ 20 0
4 IRAS 04166+2708 Or* 04 19 41.5251494184 +27 16 06.659276340           ~ 29 0
5 IRAS 04166+2706 Y*O 04 19 42.62736 +27 13 38.4312           ~ 153 0
6 [MOH94] 8b PoC 04 19 52.2 +27 11 45           ~ 4 0
7 IRAS 04169+2702 Y*O 04 19 58.44936 +27 09 57.0672           K0-M4 130 1
8 Barnard 213 DNe 04 20 51 +27 16.3           ~ 249 0
9 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1456 1
10 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0

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