Free Access

Fig. 3


Spectra of the three knots and the arc-like feature, as well as of a representative point in the nebula located roughly half way between knot C and the arc, showing the enhanced [NII] and [SII] emission with respect to Hα in the knots and the arc as compared to the surrounding nebula. The weak [OI] emission line in the spectrum of nebula is almost entirely of telluric origin

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.