Misalignment of magnetic fields and outflows in protostellar cores

Charles L. H. Hull*, Richard L. Plambeck, Alberto D. Bolatto, Geoffrey C. Bower, John M. Carpenter, Richard M. Crutcher, Jason D. Fiege, Erica Franzmann, Nicholas S. Hakobian, Carl Heiles, Martin Houde, A. Meredith Hughes, Katherine Jameson, Woojin Kwon, James W. Lamb, Leslie W. Looney, Brenda C. Matthews, Lee Mundy, Thushara Pillai, Marc W. PoundIan W. Stephens, John J. Tobin, John E. Vaillancourt, N. H. Volgenau, Melvyn C. H. Wright

*Corresponding author for this work

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    Abstract

    We present results of lambda 1.3 mm dust-polarization observations toward 16 nearby, low-mass protostars, mapped with similar to 2 ''.5 resolution at CARMA. The results show that magnetic fields in protostellar cores on scales of similar to 1000 AU are not tightly aligned with outflows from the protostars. Rather, the data are consistent with scenarios where outflows and magnetic fields are preferentially misaligned (perpendicular), or where they are randomly aligned. If one assumes that outflows emerge along the rotation axes of circumstellar disks, and that the outflows have not disrupted the fields in the surrounding material, then our results imply that the disks are not aligned with the fields in the cores from which they formed.

    Original languageEnglish
    Article number159
    Number of pages5
    JournalAstrophysical Journal
    Volume768
    Issue number2
    DOIs
    Publication statusPublished - 10-May-2013

    Keywords

    • ISM: magnetic fields
    • magnetic fields
    • polarization
    • stars: formation
    • stars: magnetic field
    • stars: protostars
    • STAR-FORMING REGIONS
    • VLBA DETERMINATION
    • DUST POLARIZATION
    • MOLECULAR CLOUD
    • DISK FORMATION
    • H2O MASERS
    • T-TAURI
    • DISTANCE
    • ORION
    • MILLIMETER

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