Free Access

Fig. 4


Line profiles of the o-H2O fundamental line at 557 GHz towards 29 Class 0 and Class 1 low-mass protostars as observed with Herschel/HIFI (in black, from Kristensen et al. (2012)), superimposed with the closest matching line profile from our grid of 48 models (red = X0 model, pink = S0, green = X1, blue = S1). Predicted profiles were calculated for the specific distance and rest velocity of each source without any arbitrary intensity rescaling. The model parameters (source model, , and i) are written in the top right corner of each panel, and are summarized in Table 3. The plotted model is of the same evolutionary Class as that attributed by Kristensen et al. (2012) on the basis of Tbol, except for three borderline sources denoted “Class 0/1” (see text). In Ser MM4, two different models are shown for the blue and red wings (X0 and S0, respectively).

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.