Free Access

Table 3

Line frequencies and opacity-column density conversion factors.

C3H2 HCO+ HNC CF+ HCO H13CO+ C2H HF C+ CH

Frequencya 85.339 89.189 90.664 102.588 86.671 86.754 87.317 1232.476 1900.537 532.774
Factorb 4.36E12 1.12E12 1.76E12 1.35E13 2.26E13 1.13E12 6.52E13 2.404E12 1.40E17 3.64E13

Notes.

(a)

GHz.

(b)

Units for all entries are cm-2 (km s-1)-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.