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Table 1

Column densities and excitation temperatures of gas-phase molecules derived from the ALMA Band 7 spectra.

Sources NGC 1333 IRAS 2A (†) B1-c
Species Catalog Ngas (cm−2) Tex (K) FWHM υlsr (km s−1) X/CH3OH (%) Ngas (cm−2) Tex (K) FWHM υlsr (km s−1) X/CH3OH (%)
CH3OH CDMS (1.1±0.3)×1019 165±10 3.5 5.0 ≡ 100 (9.0±3.0)×1018 175±20 3.5 6.0 ≡ 100
(7.0±2.0)×1018 210±10 3.0 8.5
13CH3OH CDMS >5.0×1016 170±20 3.0 5.3 >0.44 >2.5×1016 [175] 3.3 5.8 >0.28
>3.0×1016 210±20 3.0 8.3
CH318OH$\[\mathrm{CH}_3^{18} \mathrm{OH}\]$ CDMS ≤3.0×1016 [170] [3.0] [5.0] ≤0.39 ≤3.0×1016 100–200 [3.0] [5.8] ≤0.33
≤4.0×1016 [210] [3.0] [8.5]
CH2DOH JPL (1.3±1.0)×1017 180±30 3.0 4.8 1.7 (5.0±1.0)×1017 200±40 3.0 6.0 5.6
(1.7±1.0)×1017 220±20 3.0 7.9
CH3CHO JPL (1.0±0.3)×1016 170±50 2.8 5.3 0.14 (2.0±0.4)×1016 210±50 3.3 6.0 0.22
(1.5±0.5)×1016 220±50 2.8 8.0
C2H5OH CDMS (4.5±1.5)×1016 220±50 3.0 5.0 0.58 (7.0±2.0)×1016 250±50 3.0 6.0 0.78
(6.0±1.5)×1016 220±50 3.0 8.0
CH3OCH3 CDMS ≤2.0×1017 [200] [3.0] − ≤1.1 ≤6.0×1016 [200] [3.0] − ≤0.67
CH3OCHO JPL (7.0±2.0)×1016 170±30 3.0 5.0 0.83 (1.5±0.4)×1017 150±30 3.3 6.0 1.7
(8.0±2.0)×1016 170±30 3.0 8.0
CH2OHCHO CDMS ≤1.0×1016 [200] [3.0] 6.5 ≤0.06 ≤2.0×1016 [200] [3.0] 6.0 ≤0.22
a-(CH2OH)2 CDMS (5.0±1.5)×1016 220±50 3.5 5.8 0.47 (2.5±0.5)×1016 200±40 3.0 6.0 0.28
(3.5±1.0)×1016 220±50 2.0 8.0
g-(CH2OH)2 CDMS (2.0±0.5)×1016 220±30 2.5 5.5 0.33 (3.0±0.5)×1016 200±40 2.8 6.0 0.33
(4.0±1.0)×1016 220±30 2.5 8.0
t-HCOOH CDMS (9–12)×1016 100–300 4.5–5.5 7.0 0.5–0.67 (1.8–3.2)×1016 100–300 4.0 6.5 0.2–0.36
H2CCO CDMS (3.8–6.0)×1015 100–300 2.5 4.8 0.11–0.17 (5.0–7.5)×1015 100–300 3.0 6.0 0.06–0.08
(6.5–9.5)×1015 100–300 2.8 7.7
CH2DCN CDMS (2.0±0.5)×1015 200±50 4.0 7.2 0.01 (1.3±0.3)×1015 200±60 3.0 6.0 0.014
NH2CHO JPL (1.3–1.9)×1016 100–300 4.2–5.0 6.9 0.07–0.1 (1.5–2.0)×1015 100–300 3.0 6.0 0.01–0.02
C2H5CN JPL (2.0–3.5)×1015 100–300 3.0 5.0 0.04–0.08 (3.5–6.0)×1015 100–300 3.0 6.0 0.04–0.07
(2.0–3.5)×1015 100–300 3.0 8.0

Notes. (†)For IRAS 2A, some emission lines show two velocity components.

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