Upper panel, black: HCN J = 1 → 0 spectrum with a channel spacing of 3.3 km s−1 from the central 0.25 arcmin2 of NGC 4945. The covered area is limited by αJ2000 = 13h 05m26s and 13h05m29s and by δJ2000 = –49°28′50″ and –49°28′20″. The ordinate displays unweighted average values from pixels of the entire area (moment –1) as a function of barycentric velocity in units of mJy beam−1. For spatiallyintegrated flux densities, multiply by 200 ± 20. Lower panel, black: A CS J = 2 → 1 spectrum with a channel spacing of 3.0 km s1 from the same region is shown. Ordinate and abscissa: same units as for HCN. For spatially integrated flux densities, multiply by 240 ± 24. Applied pixel size for both spectra: 1″ × 1″. Overlayed spectra (red) with lower velocity resolution and larger beam size (≈1′), matched to the amplitude of our spectra, are taken from Wang et al. (2004).
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.