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HAWC+/SOFIA Multiwavelength Polarimetric Observations of OMC-1

MPS-Authors

Chuss,  David T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Andersson,  B. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bally,  John
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dotson,  Jessie L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dowell,  C. Darren
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Guerra,  Jordan A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Harper,  Doyal A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Houde,  Martin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jones,  Terry Jay
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lazarian,  A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lopez Rodriguez,  Enrique
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Michail,  Joseph M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Morris,  Mark R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Novak,  Giles
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Siah,  Javad
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Staguhn,  Johannes
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Vaillancourt,  John E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Volpert,  C. G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Werner,  Michael
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wollack,  Edward J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Benford,  Dominic J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Berthoud,  Marc
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cox,  Erin G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Crutcher,  Richard
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dale,  Daniel A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fissel,  L. M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Goldsmith,  Paul F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hamilton,  Ryan T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hanany,  Shaul
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Henning,  Thomas K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Looney,  Leslie W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Moseley,  S. Harvey
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Santos,  Fabio P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Stephens,  Ian
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tassis,  Konstantinos
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Trinh,  Christopher Q.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Van Camp,  Eric
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ward-Thompson,  Derek
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Team,  HAWC + Science
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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Citation

Chuss, D. T., Andersson, B.-.-G., Bally, J., Dotson, J. L., Dowell, C. D., Guerra, J. A., et al. (2019). HAWC+/SOFIA Multiwavelength Polarimetric Observations of OMC-1. The Astrophysical Journal, 872.


Cite as: https://hdl.handle.net/21.11116/0000-0005-D3D9-8
Abstract
We report new polarimetric and photometric maps of the massive star- forming region OMC-1 using the HAWC+ instrument on the Stratospheric Observatory for Infrared Astronomy. We present continuum polarimetric and photometric measurements of this region at 53, 89, 154, and 214 μm at angular resolutions of 5″, 8″, 14″, and 19″ for the four bands, respectively. The photometric maps enable the computation of improved spectral energy distributions for the region. We find that at the longer wavelengths, the inferred magnetic field configuration matches the “hourglass” configuration seen in previous studies, indicating magnetically regulated star formation. The field morphology differs at the shorter wavelengths. The magnetic field inferred at these wavelengths traces the bipolar structure of the explosive Becklin- Neugebauer/Kleinman-Low outflow emerging from OMC-1 behind the Orion Nebula. Using statistical methods to estimate the field strength in the region, we find that the explosion dominates the magnetic field near the center of the feature. Farther out, the magnetic field is close to energetic equilibrium with the ejecta and may be providing confinement to the explosion. The correlation between polarization fraction and the local polarization angle dispersion indicates that the depolarization as a function of unpolarized intensity is a result of intrinsic field geometry as opposed to decreases in grain alignment efficiency in denser regions.