Free Access

Table 2.

H2CCN and HDCCN column densities in TMC-1.

Parameter/Trot 5 K 6 K 7 K 8 K 9 K 10 K
N(o-H2CCN) (a) 131 121 118 120 124 128
N(p-H2CCN) (a) 17 17 17 17 18 19
N(H2CCN) (a) 148 138 135 137 142 147
N(o-H2CCN)/N(p-H2CCN) 7.7 7.1 7.0 7.1 6.9 6.7
N(HDCCN) (a) 7.4 7.5 8.0 8.8 9.6 10.5
N(H2CCN)/N(HDCCN) 20.0 18.4 16.9 15.6 14.8 14.0

Notes.

(a)

Column densities are in units of 1011 cm−2. The uncertainty on the derived column densities is ∼10% based on the adopted calibration accuracy (see Sect. 2). The adopted line width for all features of H2CCN and HDCCN is 0.6 km s−1.

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.