Table 1
Source list.
| Source | α2000.0 | δ2000.0 | l | b | RGC | d | Spitzer 8 μm/24 μm | |
| [h:m:s] | [°:′:″] | [°] | [°] | [kpc] | [kpc] | |||
|
|
||||||||
| IRDC 18102-1800 MM1 | 18 13 11.0 | –17 59 59 | 12.624 | –0.016 | 5.8 |
|
point/point | |
| G015.05+00.07 MM1 | 18 17 50.4 | –15 53 38 | 15.006 | 0.009 | 5.9 |
|
dark/dark | |
| IRDC 18151-1208 MM2 | 18 17 50.4 | –12 07 55 | 18.319 | 1.792 | 5.9 |
|
dark/-a | |
| G015.31-00.16 MM3 | 18 18 45.3 | –15 41 58 | 15.281 | –0.093 | 5.6 |
|
dark/dark | |
| IRDC 18182-1433 MM2 | 18 21 14.9 | –14 33 06 | 16.577 | –0.081 | 5.1 |
|
point/point | |
| IRDC 18223-1243 MM3 | 18 25 08.3 | –12 45 27 | 18.605 | –0.075 | 5.2 |
|
dark/point | |
| ISOSS J18364-0221 SMM1 | 18 36 36.0 | –02 21 45 | 29.135 | 2.220 | 6.3 |
|
dark/point | |
Notes. Columns (2)–(7) give the equatorial and galactic coordinates [(α, δ)2000.0 and (l, b), respectively], the source galactocentric distance (RGC), and the near kinematic distance from the Sun (d). The distances are derived by following Reid et al. (2009) as described in Sect. 4.1.1. Because IRDCs are seen as dark extinction features against the bright Galactic MIR background, it is expected that these clouds lie at the near kinematic distance. In the last column we give the comments concerning the source appearance in the Spitzer 8 and 24-μm images.
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