G345.45+1.50: an expanding ring-like structure with massive star formation

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Table 2

Summary of the physical properties of the 104 identified ¹³CO clumps.

Parameter	Range	Average	Median

Diameter	0.3–1.6	0.9	0.9
[pc]
¹Mass	2.3–7.5 × 10²	44	23
[ M_⊙]
²Density	10²–10⁴	2 × 10³	10³
[cm^-3]
²Column density	3 × 10²⁰–2 × 10²²	3 × 10²¹	2 × 10²¹
[cm^-2]
Line velocity width	0.7–2.0	1.1	1.0
[km s^-1]

Notes.

⁽¹⁾

The total mass of the clumps is 4.5 × 10³M_⊙.

⁽²⁾

Densities and column densities are estimated assuming a mean molecular weight of μ = 2.29.

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