Free Access

Fig. 3


Parts of the 3 mm line survey of IRC +10216 showing the three lines tentatively assigned to the J = 15−14, J = 16−15, and J = 18−17 rotational lines of NCCP. The J = 16−15 line is marginally detected. The rms noise levels per 1 MHz channel are 0.4, 1.2, and 0.8 mK in the bottom, middle, and top panels, respectively. Line profiles calculated under LTE, assuming that NCCP extends between 5 and 20′′ with a homogeneous fractional abundance and rotational temperature of 20 K are shown as thick gray lines.

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.