Methanol Masers at high Resolution

Details Methanol Masers at high Resolution Methanol Masers at high Resolution

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002evn..conf..209p&link_type=abstract

6th European VLBI Network Symposium on New Developments in VLBI Science and Technology, held in Bonn, June 25th-28th 2002, proce

Astronomy and Astrophysics

Astronomy

Scientific paper

We have conducted a follow-up observational campaign towards sources that were detected during the Onsala blind survey of the galactic plane at 6.7 GHz. During that campaign we have used the EVN to map the methanol maser emission at high spatial resolution. Since these observations are prior to the introduction of the 25 m antenna in Cambridge to the 6.7 GHz network, we have observed our list of targets using the single baseline between Cambridge and Jodrell-Bank in a later run, in order to have the information from the short baseline. The analysis of the separated datasets reveals that the EVN shortest baseline spacing (without the Cambridge antenna) is enough to resolve out a significant amount of extended emission from the methanol maser sources.
We present preliminary results from the missing flux studies we have conducted by comparing data from the short British single baseline observations with the "basic" EVN network observations at 6.7 GHz. We show how we intend to proceed in the analysis in order to have information about the spatial structure and extent of the observed masing regions.

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