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Table 2

Model column densities for G0.250+0.00 for velocity component with VLSR = 38 km s-1.

Species Tracer Tpeak a VLSR FWHM n(H2)b Tkin b τ c N(X) N(H2) L
(K) (km s-1) (km s-1) (cm-3) (K) (cm-2) (cm-2) (pc)

C+ [C ii] 2.2 37.6 11.5 1 × 103 100 0.34 7.2 × 1017 2.6 × 1021 0.83
C [C i] 1.6 37.4 11.6 2 × 103 100 0.02 2.5 × 1017 0.9 × 1021 0.15
CO CO(4–3) 10.0 38.2 11.6 2 × 103 70 6.3 6.0 × 1017 2.1 × 1021 0.35
HN13C HN13C(1–0) 0.29 38.4 10.5 2 × 104 65 0.65 1.7 × 1013 1.1 × 1023 1.8

Notes.

(a)

Peak main beam temperature.

(b)

The densities and kinetic temperatures are inputs to the radiative transfer model.

(c)

Line opacity.

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