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Table A.2

Ultracompact H ii regions near G010.3200.15.

Name Radio flux, λ Diameter Reference
(mJy, cm) ()

C3
G010.30100.147 654.6, 6 Becker et al. (1994)
G010.3005800.14734 426.2, 20 Helfand et al. (2006)
G010.300900.1477 631.4, 5 5.2 Urquhart et al. (2013)
G010.32100.147 320.7,20 4.9 × 4.2 White et al. (2005)
G010.32100.147 628.0, 6 5.5 × 4.1 White et al. (2005)

C7 extension
G010.32100.233 67.9, 6 Becker et al. (1994)
G010.3202900.23323 56.7, 20 Helfand et al. (2006)
3.7 MAGPIS

C1 extension
Source B 8, 20 unresolved MAGPIS

Notes. Our own measurements are indicated by an . The radio continuum source G10.3210.147 is a UC H ii region as defined by Kurtz (2005): its size is ~ 0.045 ≤ 0.1 pc, its emission measure is ~107 cm-6 pc, its density is 1.9 × 104 cm -3 ≥ 104 cm-3, its mass is ~ 2 × 10-2M. The nature of the two other radio sources is uncertain because their distance is unknown, but they have small sizes.

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