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Matching dust emission structures and magnetic field in high-latitude cloud L1642

Title: Matching dust emission structures and magnetic field in high-latitude cloud L1642: comparing Herschel and Planck maps.
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Name(s): Malinen, J., author
Montier, L., author
Montillaud, J., author
Juvela, M., author
Ristorcelli, I., author
Clark, S. E., author
Berne, O., author
Bernard, J.-Ph, author
Pelkonen, V.-M., author
Collins, D. C., author
Type of Resource: text
Genre: Text
Date Issued: 2016-08-01
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The nearby cloud L1642 is one of only two known very high latitude (b| > 30 deg) clouds actively forming stars. It is a rare example of star formation in isolated conditions, and can reveal important details of star formation in general, e.g. of the effect of magnetic fields. We compareHerschel dust emission structures and magnetic field orientation revealed byPlanck polarization maps in L1642. The high-resolution (similar to 20 arcsec)Herschel data reveal a complex structure including a dense, compressed central clump, and low-density striations. ThePlanck polarization data (at 10 arcmin resolution) reveal an ordered magnetic field pervading the cloud and aligned with the surrounding striations. There is a complex interplay between the cloud structure and large-scale magnetic field. This suggests that the magnetic field is closely linked to the formation and evolution of the cloud. CO rotational emission confirms that the striations are connected with the main clumps and likely to contain material either falling into or flowing out of the clumps. There is a clear transition from aligned to perpendicular structures approximately at a column density ofN(H) = 1.6 x 10(21) cm(-2). Comparing theHerschel maps with thePlanck polarization maps shows the close connection between the magnetic field and cloud structure even in the finest details of the cloud.
Identifier: FSU_libsubv1_wos_000379832800062 (IID), 10.1093/mnras/stw1061 (DOI)
Keywords: angle, catalog, grains, ISM: clouds, ISM: magnetic fields, molecular clouds, Morphology, objects, polarization, polarization fraction, positive matrix factorization, prestellar cores, star-formation, submillimetre: ISM
Publication Note: The publisher’s version of record is available at http://www.dx.doi.org/10.1093/mnras/stw1061
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000379832800062
Owner Institution: FSU
Is Part Of: Monthly Notices of the Royal Astronomical Society.
0035-8711
Issue: iss. 2, vol. 460

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Malinen, J., Montier, L., Montillaud, J., Juvela, M., Ristorcelli, I., Clark, S. E., … Collins, D. C. (2016). Matching dust emission structures and magnetic field in high-latitude cloud L1642: comparing Herschel and Planck maps. Monthly Notices Of The Royal Astronomical Society. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000379832800062