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Table 2

Physical parameters of the considered cloud cores.

Source Coordinates HPBW† Frequencies†† v LSR Δ v FWHM d sou T rot N(CH3ONH2)
J2000.0 (′′) GHz (km s-1) (km s-1) (′′) (K) ×1015 (cm-2)
Orion KL α = 5h35m145 30–8 80–307 8.0 3.0 10 150 ≤(1.0 ± 0.3)
(IRAM 30 m) δ = −05°22′300
Orion KL α = 05h35m145 ~1.9×1.4 213.7–246.7 8.0 3.0 3.0 150 ≤(3.0 ± 1.0)
(ALMA SV) δ = −05°22′325
Hot core
Orion KL α = 05h35m141 ~1.9×1.4 213.7–246.7 7.5 2.0 3.0 100 ≤(2.0 ± 0.6)
(ALMA SV) δ = −05°22′369
Compact ridge
Orion KL α = 05h35m142 ~1.9×1.4 213.7–246.7 8.0 3.0 3.0 150 ≤(2.0 ± 0.6)
(ALMA SV) δ = −05°22′311 5.0 3.0 3.0 150 ≤(2.0 ± 0.6)
MM4
Sgr B2 (IRAM 30 m) 30–21 80–115.5 63 7.0 2.4 180 ≤(1000 ± 60)
α = 17h47m200 73 7.0 1.4 180 ≤(1000 ± 60)
δ = −28°22′190 83 8.0 60 2.7 ≤(2.0 ± 0.6)
(GBT 100 m) 80–15 7–50
α = 17h47m198
δ = −28°22′170
B1-b α = 03h33m208 30–21 80–115.5 6.7 0.7 60 12 ≤(0.0020 ± 0.0006)
(IRAM 30 m) δ = 31°07′340
TMC-1 α = 04h41m4188 30–21 80–115.5 6.0 0.7 60 10 ≤(0.0020 ± 0.0006)
(IRAM 30 m) δ = 25°41′270

Notes. (†) Half-power beam width (HPBW) for observations with single-dish telescopes (IRAM 30 m and GBT 100 m) and synthetic beam for the ALMA SV observations. (††) Range of frequencies considered in the analysis.

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