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Dust properties and magnetic field geometry towards LDN 1570

Published online by Cambridge University Press:  05 March 2015

C. Eswaraiah ,
G. Maheswar  and
A. K. Pandey
C. Eswaraiah
Affiliation:
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 129, India
G. Maheswar
Affiliation:
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 129, India
A. K. Pandey
Affiliation:
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 129, India
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Abstract

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We have performed both optical linear polarimetric and photometric observations of an isolated dark globule LDN 1570 aim to study the dust polarizing and extinction properties and to map the magnetic field geometry so as to understand not only the importance of magnetic fields in formation and evolution of clouds but also the correlation of the inferred magnetic field structure with the cloud structure and its dynamics. Dust size indicators (RV and λmax) reveal for the presence of slightly bigger dust grains towards the cloud region. The inferred magnetic field geometry, which closely follows the cloud structure revealed by Herschel images, suggest that the cloud could have been formed due to converging material flows along the magnetic field lines.

Keywords

(ISM:) dustextinctionISM: magnetic fieldstechniques: polarimetricISM:cloudsISM: individual-LDN 1570
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Highlights H16: Highlights of Astronomy , August 2012 , pp. 385
Copyright
Copyright © International Astronomical Union 2015 

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