Spectra of NH3 (1, 1) and HC3N (2−1) lines toward the molecular core L1498 obtained at the Effelsberg 100-m radio telescope. The offset (Δα,Δδ) = (0′′,0′′). The histograms show the data averaged over two spectral channels. The fits are shown with solid curves. The vertical tick-marks indicate the positions and the relative strengths of the hyperfine structure components for local thermodynamical equilibrium and optically thin emission. The residual spectra are plotted below each profile. The fitting parameters are presented in Table 2.
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.