Cause and effects of the massive star formation in Messier 8 East

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Volume 644 (December 2020)

A&A, 644 (2020) A25

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Table 3

Priors, given input, and resulting output from the best-fit models.

	Temperature (K)	Column density (Log(cm⁻²))	Line width (km s⁻¹)	Velocity (km s⁻¹)
CH₃CCH J = 5 → 4 and 6 → 5

Prior	Truncated normal	Normal	Truncated normal	Normal
Input	μ = 50	μ = 14	μ = 5	μ = 0
	σ = 30	σ = 2	σ = 3	σ = 2
	low = 10, high = 80		low = 1, high = 35

Output	32.9 (1.4)	14.72 (0.047)	2.03 (0.05)	-0.24 (0.019)

N₂H⁺ J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	14.11 (0.042)	2.24 (0.03)	-0.28 (0.01)

HCN J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	15.24 (0.042)	3.07 (0.08)	-0.37 (0.03)

H¹³CN J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	13.84 (0.037)	2.25 (0.02)	-0.22 (0.008)

HCO⁺ J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	14.84 (0.027)	2.45 (0.038)	-0.13 (0.009)

H¹³CO⁺ J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	12.97 (0.045)	2.1 (0.03)	-0.23 (0.01)

HNC J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	14.35 (0.05)	2.59 (0.032)	-0.12 (0.007)

HN¹³C J = 1 → 0

Prior	Fixed	Normal	Truncated normal	Normal
Input	value = 33	μ = 14	μ = 5	μ = 0
		σ = 2	σ = 3	σ = 2
			low = 1, high = 35

Output	33	13.24 (0.04)	2.1 (0.043)	-0.06 (0.01)

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