Volume 480, Number 3, March IV 2008
|Page(s)||767 - 773|
|Section||Interstellar and circumstellar matter|
|Published online||17 January 2008|
First VLBI observations of methanol maser polarisation, in G339.88-1.26
Observatorio Astronómico Nacional, Apartado 112, Alcala de Henares 28803, Spain e-mail: email@example.com
Accepted: 21 December 2007
Aims.We investigate class II methanol masers and the environment in which they form with the Long Baseline Array (LBA).
Methods.Using full polarisation VLBI, we were able to measure the magnetic field directions so as to distinguish between the two main models of the environment in which methanol masers form: disks or shocks.
Results.We present polarised images of the methanol maser source G339.88-1.26, made with the LBA at 6.7-GHz. With these first polarisation maps made with the LBA, which successfully reproduce observations with the ATCA confirming the new AIPS code, a new technique for Southern VLBI is opened. The magnetic field directions found are inconstant with methanol masers arising in disks for the majority of the emission.
Key words: techniques: polarimetric / masers / radio lines: stars / stars: formation / stars: individual: G339.88-1.26
© ESO, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.