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Table C.1

Rest frequencies of pure rotational lines of HCN and H13CN.

Transition HCN H13CN
mm Notation mid-IR Notation FuFl No HFS HFS No HFS HFS
(MHz) (MHz) (MHz) (MHz)
v = 0 J = 1−0 G.S.(σ+)Re(0) 88631.602 86339.921
1 − 1 88630.415 86338.735
2 − 1 88631.847 86340.166
0 − 1 88633.936 86342.255
v = 0 J = 3−2 G.S.(σ+)Re(2) 265886.433 259011.798
3 − 3 265884.890 259010.255
2 − 1 265886.188 259011.552
3 − 2 265886.433 259011.796
4 − 3 265886.499 259011.862
2 − 3 265886.979 259012.345
2 − 2 265888.522 259013.886
J = 3−2 ν2(π)Re(2) 265852.708 258936.050
J = 3−2 ν2(π)Rf(2) 267199.282 260224.813
J = 3−2 2ν2(σ+)Re(2) 267243.200 260224.390

Notes. The frequencies are included in the MADEX code (Cernicharo et al. 2012) and were derived from the fit to all the laboratory frequencies available hitherto in the literature and other data still unpublished involving many vibrational states (Cernicharo et al., in prep.). The rest frequencies for the hyperfine components are given for the J = 1− 0 and 3− 2 lines of the vibrational ground state. The uncertainties are below 5 kHz for all the rest frequencies. We introduce a notation for the rotational transitions commonly used in works based on millimeter observations (Col. 1) and the transitions expressed with the notation that we are using in the current work for the mid-IR transitions (Col. 2).

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