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Probing the magnetic field structure in the filamentary cloud IC5146

Part of: IAU Issue 315 - From Interstellar Clouds...

Published online by Cambridge University Press:  12 September 2016

Jia-Wei Wang ,
Chakali Eswaraiah ,
Shih-Ping Lai ,
D. P. Clemens ,
Wen-Ping Chen  and
Anil K. Pandey
Jia-Wei Wang
Affiliation:
Institute of Astronomy & Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan email: [email protected]; [email protected]
Chakali Eswaraiah
Affiliation:
Institute of Astronomy & Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan email: [email protected]; [email protected] Aryabhatta Research Institute of Observational-Sciences (ARIES), India Institute of Astronomy, National Central University, Taiwan
Shih-Ping Lai
Affiliation:
Institute of Astronomy & Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan email: [email protected]; [email protected]
D. P. Clemens
Affiliation:
Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USA
Wen-Ping Chen
Affiliation:
Institute of Astronomy, National Central University, Taiwan
Anil K. Pandey
Affiliation:
Aryabhatta Research Institute of Observational-Sciences (ARIES), India
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Abstract

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IC5146 is one of the filamentary clouds observed in Herschel Gould Belt Survey. Here we present our polarization observations toward IC5146 taken with AIMPOL, TRIPOL and Mimir. Our results reveal that the large scale structure of magnetic field is well perpendicular to the main filament, but is likely parallel to the sub-filaments, which are structure extended out from the main filaments. We have also conducted CO observations to reveal the gas kinematics along the filaments or magnetic field; this result suggests the gas is possibly confined by magnetic field in most of the region until reaching supercritical. Based on our results, we suggests that at least four types of filaments can be found in IC5146, behaving different physical properties and consistent with different formation mechanisms. Our conclusions reveal that filaments are a combination of a variety types of objects.

Keywords

ISM: cloudISM: magnetic fieldsISM: structureISM: evolutionpolarization
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S315: From Interstellar Clouds to Star-Forming Galaxies: Universal Processes? , August 2015 , E80
Copyright
Copyright © International Astronomical Union 2016 

References

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