Free Access

Fig. 4


W49 continuum, HCO F = 1–1 and H13CO+ emission and absorption spectra. Left: 86.8 GHz continuum (grayscale; peak =2.5 Jy) and H13CO+ emission (contours of integrated brightness temperature in units of Kelvins km s-1). The 4′′ synthesized HPBW is shown inset at lower left. Right top: spectra of H13CO+ and HCO toward the continuum peak labelled position “A” at left. Right bottom: emission spectra at off-continuum positions “B” (blue in electronic media) and “C” (red). Spectra showing strong emission are H13CO+, those without are spectra of HCO.

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.