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Table 3

X-ray astrophysical photodesorption yields (in molecules photon−1) of H12COOH, 12CO, 12CO2, and H2O from CO-dominated and H2O-dominated ices, at 15 K.

H12COOH 12CO 12CO2 H2O
Mixed with 13CO
Source Spectrum 7.5 ± 3.8 × 10−4 4.2 ± 2.1 × 10−2 1.7 ± 0.9 × 10−2 4.0 ± 2.0 × 10−3
NH = 1021 cm−2 6.8 ± 3.4 × 10−4 3.8 ± 1.9 × 10−2 1.6 ± 0.8 × 10−2 3.7 ± 1.8 × 10−3
NH = 1022 cm−2 3.4 ± 1.7 × 10−4 1.9 ± 0.9 × 10−2 7.8 ± 3.9 × 10−3 1.8 ± 0.9 × 10−3
NH = 1023 cm−2 4.5 ± 2.3 × 10−5 2.5 ± 1.3 × 10−3 1.0 ± 0.5 × 10−3 2.4 ± 1.2 × 10−4
NH = 1024 cm−2 6.0 ± 3.0 × 10−6 3.4 ± 1.7 × 10−4 1.4 ± 0.7 × 10−4 3.2 ± 1.6 × 10−5
Mixed with H2O
Source Spectrum <5.0 ± 2.5 × 10−4 1.2 ± 0.6 × 10−2 1.1 ± 0.6 × 10−2 6.1 ± 3.0 × 10−3
NH = 1021 cm−2 <4.6 ± 2.3 × 10−4 1.1 ± 0.6 × 10−2 1.0 ± 0.5 × 10−2 5.6 ± 2.8 × 10−3
NH = 1022 cm−2 <2.3 ± 1.2 × 10−4 5.6 ± 2.8 × 10−3 5.1 ± 2.6 × 10−3 2.8 ± 1.4 × 10−3
NH = 1023 cm−2 <3.2 ± 1.6 × 10−5 7.6 ± 3.8 × 10−4 7.0 ± 3.5 × 10−4 3.8 ± 1.9 × 10−4
NH = 1024 cm−2 <4.3 ± 2.2 × 10−6 1.0 ± 0.5 × 10−4 9.4 ± 4.7 × 10−5 5.1 ± 2.6 × 10−5

Notes. These yields were derived according to the methodology described in Section 2. The yields associated with the other identified species can be found by computing the same relative values as are displayed in Table 2.

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