First detection of deuterated methylidyne (CD) in the interstellar medium

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Table 2

Continuum source parameters.

Source	α(J2000)	δ(J2000)	υ_LSR	T_c	T_rms	t_obs
Designation	(^h :^m:^s)	(º :′:″)	(km s⁻¹)	(K)	(mK)	(h)
IRAS 16293–2422	16:32:22.78	−24:28:38.70	3.9	1.18	16	10.5
Sgr B2 (M)	17:47:20.49	−28:23:06.00	62.0	6.70	21	1.9
G34.26+0.15	18:53:18.60	01:14:58.00	57.0	3.05	12	3.3
W49 N	19:10:13.20	09:06:11.80	11.8	2.36	33	2.6

Notes. T_c represents the continuum level at 440 GHz and T_rmsthe rms noise level on the T_MB scale quoted for a spectral resolution of 0.08 km s⁻¹. The observing leg time (t_obs) refers to the total duration of time for which each source was observed.

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