Abstract Details
| Name: Ekta Sharma Affiliation: ARIES Conference ID: ASI2016_929 Title : Optical polarimetry towards L1157 molecular cloud Authors and Co-Authors : Dr.Maheswar Gopinanthan(ARIES),Dr.Archana Soam, Neha Sharma, Piyali Saha (ARIES) Abstract Type : Poster Abstract Category : Stars, The Milky Way Galaxy and its neighbours Abstract : In this work, we present the preliminary study of the optical polarisation measurements of the stars projected on L1157 molecular cloud which contains a low mass class 0 protostar associated with the prominent bipolar outflows. Light from the stars, while passing through the dust grains that are aligned with their minor axis parallel to the external magnetic fields, gets linearly polarised. Polarisation measurements in the optical wavelength can trace the plane-of-sky component of the magnetic field in the core envelope. It has been widely accepted that the magnetic fields play an important role in the spontaneous star formation process. In a magnetic field dominated scenario for isolated low mass star formation, outflow axis is considered as the proxy of the rotation axis of the core. With the help of the optical polarisation study by us (in the cloud envelope) and the literature available on the sub-mm polarisation measurements (in the cloud core) in the vicinity of the outflow, we will examine how the magnetic field morphologies are correlated to the outflows and the flattened structure right from the core to the envelope of L1157. Our preliminary results towards this cloud will be discussed in this poster at ASI. |