Free Access

Fig. 4


Spectral window with several CH3OH lines from the single-dish (black lines, 0.2 MHz spectral resolution) and the 2” interferometric data (red line, 0.8 MHz spectral resolution). CH3OH lines with upper level energies higher than 70 K are marked with a star in the NGC 7538 IRS9 to emphasize the increase in SMA/IRAM overlapping for lines with higher upper energy levels.

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.