Open Access

Fig. 2


Line profiles of SiO in the L1157-B1 shock. The line intensity in main-beam temperature (Tmb) from 29SiO (red), and 30SiO (blue) is over-plotted on the main isotopologue, 28SiO (grey), by multiplying for their solar isotopic ratios ([28Si/29Si] = 19.7, [28Si/30Si] = 29.8, Anders & Grevesse 1989). The transitions are labelled. The baseline and the systemic velocity (+2.6 km s−1, Bachiller et al. 2001) are indicated by the horizontal and vertical dotted lines, respectively. The vertical dashed lines indicate the three velocity intervals where the integrated intensity has been calculated: [−23, −13], [−13, −3], and [−3, +5] km s−1, see Table 1. The red-shifted component that appears to be associated with 29SiO 2− 1 is due to blending with the 13CH3OH 41,3 –3−2,2 line.

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.