An optical imaging and polarimetric study of the LYNDS 723 and Barnard 335 molecular outflow regions

Details An optical imaging and polarimetric study of the LYNDS 723 and Barnard 335 molecular outflow regions An optical imaging and polarimetric study of the LYNDS 723 and Barnard 335 molecular outflow regions

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92..633v&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Sept. 1986, p. 633-636. NASA-NSF-supported research.

Astronomy and Astrophysics

Astronomy

45

Molecular Clouds, Optical Polarization, Polarimetry, Stellar Evolution, Stellar Mass Ejection, Emission Spectra, Far Infrared Radiation, H Alpha Line, Red Shift, Stellar Spectrophotometry

Scientific paper

Optical polarization measurements are reported for a sample of stars viewed through the periphery of two dense molecular clouds, Barnard 335 and Lynds 723. These observations suggest that the direction of the magnetic field threading these clouds lies along position angle 111 + or - 4 deg for B335 and 90 + or - 8 deg for L723. In each case, the deduced field direction is approximately parallel to the direction defined by a collimated bipolar molecular outflow driven by a highly obscured FIR source. R, I, and H-alpha CCD images of these regions reveal knots of optical emission apparently associated with the molecular outflows. In the case of L723, two emission features are found within the blueshifted wing of the molecular outflow; along with the FIR source, these knots define a position angle nearly identical to that of the molecular flow. For B335, the observed emission knot lies in the redshifted wing of the molecular outflow along a position angle approximately equal to that of the flow.

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