Surviving the hole - I. Spatially resolved chemistry around Sagittarius A∗

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Table 2

Spectral parameters of the transitions detected.

Molecule	Transition	Frequency	E _upper ^a	A _ul ^b
		(GHz)	(K)	(10^-4 s^-1)

SiO	5−4	217.104	31	5.2
¹³CN^c	2−1	217.467	16	1.0
c-C₃H₂	6_1,6−5_0,5	217.822	39	5.9
H₂CO	3_0,3−2_0,2	218.222	21	2.8
CN^c	2−1	226.875	16	1.1
HC₃N	25−24	227.419	142	9.3

Notes.

^(a)

Energy of the transition upper level.

^(b)

Einstein coefficient.

^(c)

Frequency and A_ul refer to the brightest transition of the hyperfine group.

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