Distance of Hi-GAL sources | Astronomy & Astrophysics (A&A)

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Table 2.

Methods used for distance disambiguation with their associated priority codes.

Priority order	Code	Method used for disambiguation
1	MDIST	Maser distance ^(a)
2	SDIST_GROUP	Stellar distance from grouping (optical H II regions, literature ^(b))
3	SDIST_EXT	Kinematic distance from spectral abs. line (literature ^(c))
4	KDIST_GROUP	Kinematic distance from grouping (radio HII regions, literature ^(b))
5	KDIST_IRDC	Kinematic distance from IRDC/dark clouds (literature ^(d))
6	KDIST	Kinematic distance from daughter clouds (for Q1 only, Brunt et al. ^(e))
7	CLOUD_EXT	Kinematic distance from Extinction datacubes
8	HISA_DIST	Kinematic distance from HI profile self-absorption analysis
9	SOLO_DIST	Kinematic distance from Solomon ^(f) method (distance above the galactic plane)
—	NO_KDA	No solution (hence far distance adopted)
—	KDA_NO	No velocity (hence velocity = −999.)
—	NO_AMB	No kinematic ambiguity
—	TGT_POINT	Tangent point distance (forbidden velocity)

References.

^(a)

Reid et al. (2009, 2014), Wu et al. (2014), Honma et al. (2012), Bobylev & Bajkova (2013);

^(b)

Russeil (1998);

^(c)

Wienen et al. (2015), Anderson et al. (2015), Urquhart et al. (2012), Anderson & Bania (2009), Roman-Duval et al. (2009), Busfield et al. (2006), Sewilo et al. (2004), Watson et al. (2003), Kolpak et al. (2003), Pandian et al. (2008), Araya et al. (2002);

^(d)

Chira et al. (2013), Liu et al. (2013), Peretto & Fuller (2009), Jackson et al. (2008), Du & Yang (2008), Simon et al. (2006a,b), Otrupcek et al. (2000);

^(e)

Brunt et al. (in prep.) Position-position-velocity dendrogram analysis has been applied to the NANTEN datacube. Then, when possible the maser or stellar distance or the near/far choice is assigned to the identified structures.

^(f)

Solomon et al. (1987).

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