Open Access
Table 1
Summary of the C2c1a and C2c1b core properties.
| Property | C2c1a | C2c1b |
|---|---|---|
| Longitude (deg) | 28.3408 | 28.3410 |
| Latitude (deg) | 0.0614 | 0.0611 |
| reff (arcsec) | 0.57 | 0.43 |
| reff (pc) | 0.014 | 0.010 |
| reff (AU) | 2827 | 2127 |
| S v (no background sub.) (mJy) | 12.89±1.29 | 2.43 ±0.24 |
| S v (background sub.) (mJy) | 9.65±0.97 | 0.64±0.06 |
| Tdust (K) | 10.4±3.0 | 10.4±3.0 |
| M (no background sub.) (M⊙) | 30.9±12.4 | 5.8±2.3 |
| M (background sub.) (M⊙) | 23.1±9.2 | 1.5±0.6 |
| nн2 (106 cm−3) | 31.21± 12.48 | 4.86±1.94 |
| tff (yr) | 5525±2762 | 14000±7000 |
| υLSR (km s−1) | 79.36±0.03 | 79.08±0.04 |
| σobs (km s−1) | 0.35±0.04 | 0.25±0.05 |
| cs (km s−1) | 0.19±0.06 | 0.19±0.06 |
| σobs,corr (km s−1) | 0.34±0.04 | 0.25±0.05 |
| σNT (km s−1) | 0.34±0.10 | 0.24±0.07 |
| σtot (km s−1) | 0.39±0.12 | 0.31±0.09 |
| ℳs = σNT/CS | 1.8±0.7 | 1.2±0.5 |
| MJ (M⊙) | 0.05±0.03 | 0.13±0.06 |
| λJ (AU) | 733±366 | 1858±929 |
| αvir | 0.10±0.05 | 0.74±0.37 |
| MJ,tot (M⊙) | 0.42±0.21 | 0.52±0.26 |
| B (mG) | 10.0±5.0 | 1.0±0.5 |
| Bmed (mG) | 14.4±7.2 | 4.3±2.2 |
| Σcl (gcm−2) | 0.62±0.25 | 0.62±0.25 |
| σc,vir (km s−1) | 0.70±0.35 | 0.35±0.18 |
| σc,vir(Bmed) (km s−1) | 0.26±0.13 | 0.14±0.07 |
| Rσ = σtot/σc,vir | 0.56±0.28 | 0.87±0.43 |
| Rσ(Bmed) = σtot/σc,vir(Bmed) | 1.50±0.75 | 2.26±1.13 |
Notes. We outline how each of these properties is measured in Sects. 3, 4, and 5. The quoted Tdust values are taken from Wang et al. (2012). Note that all the properties listed here that are calculated with the mass use the values that include background subtraction.
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