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Home All issues Volume 645 (January 2021) A&A, 645 (2021) A49 Full HTML
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Table A.1.

Column density ratios and abundances X of species Y included in the overall fit of the Herschel/PACS spectrum of ESO 320-G030.

Core Disk
Species Y N(H2O)/N(Y) X(a) N(H2O)/N(Y) X(a)
H2O 1 4 × 10−5 1 1 × 10−5
HO 100 4 × 10−7 100 1 × 10−7
OH 2 2 × 10−5 1 5 × 10−6
18OH 100 2 × 10−7 100 5 × 10−8
OH+ 280 1 × 10−7 140 6 × 10−8
H2O+ 1200 3 × 10−8 350 3 × 10−8
H3O+ 1200 3 × 10−8 350 3 × 10−8
NH 75 5 × 10−7 20 4 × 10−7
NH2 620 6 × 10−8 175 7 × 10−8
NH3 38 1 × 10−6 10 1 × 10−6
CH 740 5 × 10−8 210 4 × 10−8
CH+ 180 2 × 10−7 50 2 × 10−7
13CH+ 3600 1 × 10−8 1050 1 × 10−8
SH 1800 2 × 10−8 520 2 × 10−8
HF 1800 2 × 10−8 520 2 × 10−8
C3 180 2 × 10−7 30 3 × 10−7

Notes.

(a)

Abundances X of species Y relative to H nuclei are estimated from the column density N(Y) and the continuum optical depth at 100 μm (NH = 1.3 × 1024 τ100).

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