Relationship between the column density distribution and evolutionary class of molecular clouds as viewed by ATLASGAL

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Table 1

Completeness of each evolutionary class.

	H ii	SFCs	SLCs	No class

Total	114	184	210	107
Known d^a	84	126	120	–
d < 5.5 kpc	57	99	111	–
d > 5.5 kpc	27	27	9	–
miss. d < 5.5 kpc^b	20	18	102	87
miss. d > 5.5 kpc^b	10	8	8	20
Studied	57	99	31^c	–

Notes.

^(a)

Only SLCs with KDA solved and, if more than one distance estimate, agreement between different literature sources.

^(b)

Number of regions lost due to lack of distance estimates. We assume homogeneous distribution of the sources along the Galactic plane area studied.

^(c)

We only studied isolated SLCs (see Sect. 2.2).

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