Magnetic fields and star formation - Evidence from imaging polarimetry of the Serpens Reflection Nebula

Details Magnetic fields and star formation - Evidence from imaging polarimetry of the Serpens Reflection Nebula Magnetic fields and star formation - Evidence from imaging polarimetry of the Serpens Reflection Nebula

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.227..749w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 227, Aug. 1, 1987, p. 749-771. SERC-supported research.

Astronomy and Astrophysics

Astronomy

34

Magnetic Fields, Polarimetry, Reflection Nebulae, Star Formation, Binary Stars, Dark Matter, Gravitational Collapse, Magnetic Field Configurations, Molecular Clouds, Protostars

Scientific paper

CCD imaging of the Serpens bipolar reflection nebula shows it to be surrounded by dark material having spiral density structure. Multicolor polarization mapping also reveals details of the surrounding magnetic field, indicating that this also has spiral structure. These observations are discussed along with current ideas about the role of magnetic fields during star formation. An interpretation involving the nonaxisymmetric magnetically braked collapse of a protostellar cloud is proposed and a resulting magnetic field configuration is described which can account for the observations. Evidence is also discussed for the formation of a binary star system within the nebula, resulting from the fragmentation of a magnetized protostellar disk. Finally, the role of magnetic fields in the acceleration and collimation of bipolar outflows is considered and the wider sequence of star-forming events in the Serpens molecular cloud is examined.

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