Table 5
Results of the best models defined as those minimizing χ2 for the various densities, nH = 10, 20, 50, and 100 cm-3.
| nH = 10 cm-3 | ||||||||||
|
|
||||||||||
| Source | ζ | L | χ 2 | N(1, 1) | N(1, 0) | N(3, 3) | N(2, 2) | f | ⟨ T ⟩ | ⟨ xe ⟩ |
|
|
||||||||||
| GC IRS 21 | 1 | 94 | 0.6 | 19.5 | 11.5 | 12.8 | 0.14 | 0.5 | 316 | 1.3 |
| GC IRS 3 | 3 | 108 | 0.3 | 9.6 | 4.4 | 9.4 | 0.11 | 0.4 | 471 | 3.0 |
| GC IRS 1W | 1 | 81 | 0.3 | 15.8 | 9.2 | 10.4 | 0.11 | 0.5 | 321 | 1.4 |
| GCS 3-2 | 3 | 121 | 4.79 | 11.0 | 5.0 | 10.9 | 0.13 | 0.4 | 467 | 3.0 |
| J1743 | 0.3 | 74 | 0.006 | 13.0 | 8.8 | 5.0 | 0.05 | 0.7 | 212 | 0.6 |
| J1747 | 1 | 45 | 0.004 | 5.8 | 3.1 | 4.3 | 0.05 | 0.5 | 391 | 1.7 |
| NHS 21 | 1 | 53 | 0.2 | 7.9 | 4.4 | 5.5 | 0.06 | 0.5 | 354 | 1.5 |
| NHS 22 | 1 | 78 | 0.08 | 14.8 | 8.6 | 9.7 | 0.11 | 0.5 | 323 | 1.4 |
| NHS 25 | 3 | 108 | 0.08 | 9.6 | 4.4 | 9.5 | 0.11 | 0.3 | 474 | 3.0 |
| NHS 42 | 0.7 | 76 | 0.1 | 15.8 | 9.9 | 8.6 | 0.09 | 0.6 | 278 | 1.0 |
| Mean | 1 | 66 | 0.5 | 11.2 | 6.4 | 7.5 | 0.08 | 0.5 | 337 | 1.4 |
|
|
||||||||||
| nH = 20 cm-3 | ||||||||||
|
|
||||||||||
| Source | ζ | L | χ 2 | N(1, 1) | N(1, 0) | N(3, 3) | N(2, 2) | f | ⟨ T ⟩ | ⟨ xe ⟩ |
|
|
||||||||||
| GC IRS 21 | 3 | 51 | 0.37 | 22.0 | 12.6 | 17.0 | 0.35 | 0.5 | 319 | 1.3 |
| GC IRS 3 | 6 | 61 | 0.46 | 10.1 | 4.5 | 11.1 | 0.25 | 0.4 | 472 | 3.0 |
| GC IRS 1W | 3 | 41 | 0.19 | 17.0 | 9.8 | 12.9 | 0.26 | 0.5 | 315 | 1.3 |
| GCS 3-2 | 3 | 34 | 4.90 | 12.8 | 7.3 | 9.7 | 0.20 | 0.5 | 320 | 1.4 |
| J1743 | 0.6 | 33 | 0.01 | 12.5 | 8.6 | 4.9 | 0.10 | 0.7 | 187 | 0.6 |
| J1747 | 3 | 22 | 0.21 | 6.6 | 3.6 | 5.2 | 0.11 | 0.5 | 337 | 1.6 |
| NHS 21 | 2 | 25 | 0.17 | 8.4 | 4.7 | 6.3 | 0.13 | 0.5 | 320 | 1.4 |
| NHS 22 | 2 | 37 | 0.15 | 15.8 | 9.3 | 11.1 | 0.23 | 0.6 | 299 | 1.2 |
| NHS 25 | 3 | 29 | 0.07 | 10.4 | 5.9 | 7.9 | 0.17 | 0.5 | 321 | 1.4 |
| NHS 42 | 1 | 35 | 0.14 | 16.2 | 10.5 | 8.7 | 0.18 | 0.6 | 238 | 0.8 |
| Mean | 3 | 33 | 0.08 | 12.2 | 6.9 | 9.3 | 0.19 | 0.5 | 321 | 1.4 |
|
|
||||||||||
| nH = 50 cm-3 | ||||||||||
|
|
||||||||||
| Source | ζ | L | χ 2 | N(1, 1) | N(1, 0) | N(3, 3) | N(2, 2) | f | ⟨ T ⟩ | ⟨ xe ⟩ |
|
|
||||||||||
| GC IRS 21 | 12 | 24 | 0.1 | 16.0 | 8.0 | 17.7 | 0.84 | 0.4 | 432 | 2.1 |
| GC IRS 3 | 12 | 12 | 0.5 | 7.0 | 3.5 | 7.7 | 0.37 | 0.4 | 424 | 2.2 |
| GC IRS 1W | 6 | 14 | 0.2 | 16.5 | 9.9 | 13.1 | 0.59 | 0.6 | 302 | 1.1 |
| GCS 3-2 | 12 | 15 | 4.4 | 9.4 | 4.7 | 10.4 | 0.50 | 0.4 | 426 | 2.1 |
| J1743 | 3 | 10 | 0.2 | 12.1 | 8.0 | 6.6 | 0.31 | 0.7 | 220 | 0.7 |
| J1747 | 5 | 7 | 0.1 | 6.4 | 3.8 | 4.9 | 0.23 | 0.6 | 295 | 1.2 |
| NHS 21 | 5 | 8 | 0.2 | 7.9 | 4.7 | 6.1 | 0.28 | 0.6 | 295 | 1.2 |
| NHS 22 | 5 | 12 | 0.2 | 14.9 | 9.2 | 10.7 | 0.49 | 0.6 | 278 | 1.0 |
| NHS 25 | 6 | 9 | 0.1 | 9.9 | 5.8 | 7.8 | 0.36 | 0.5 | 303 | 1.2 |
| NHS 42 | 3 | 12 | 0.1 | 15.6 | 1.0 | 8.8 | 0.41 | 0.7 | 227 | 0.7 |
| Mean | 6 | 11 | 0.1 | 12.1 | 7.2 | 9.5 | 0.44 | 0.6 | 301 | 1.1 |
|
|
||||||||||
| nH = 100 cm-3 | ||||||||||
|
|
||||||||||
| Source | ζ | L | χ 2 | N(1, 1) | N(1, 0) | N(3, 3) | N(2, 2) | f | ⟨ T ⟩ | ⟨ xe ⟩ |
|
|
||||||||||
| GC IRS 21 | 11 | 7 | 0.5 | 18.6 | 11.4 | 15.9 | 1.3 | 0.6 | 310 | 1.0 |
| GC IRS 3 | 30 | 8 | 1.1 | 7.7 | 3.7 | 10.2 | 0.88 | 0.4 | 505 | 2.6 |
| GC IRS 1W | 10 | 6 | 0.4 | 14.8 | 9.3 | 12.0 | 0.97 | 0.6 | 294 | 1.0 |
| GCS 3-2 | 11 | 4 | 7.0 | 11.0 | 6.8 | 9.0 | 0.74 | 0.6 | 297 | 1.0 |
| J1743 | 3 | 5 | 0.04 | 12.9 | 9.7 | 4.9 | 0.44 | 0.7 | 160 | 0.4 |
| J1747 | 9 | 3 | 0.2 | 6.1 | 3.8 | 4.7 | 0.40 | 0.6 | 277 | 1.0 |
| NHS 21 | 10 | 3 | 0.3 | 7.4 | 4.6 | 5.9 | 0.50 | 0.6 | 286 | 1.0 |
| NHS 22 | 8 | 5 | 0.1 | 14.1 | 9.2 | 9.8 | 0.80 | 0.6 | 256 | 0.8 |
| NHS 25 | 11 | 4 | 0.1 | 8.9 | 5.5 | 7.3 | 0.60 | 0.6 | 293 | 1.0 |
| NHS 42 | 6 | 5 | 0.2 | 15.1 | 10.2 | 9.3 | 0.77 | 0.7 | 233 | 0.7 |
| Mean | 11 | 4 | 0.07 | 10.5 | 6.4 | 8.9 | 0.73 | 0.6 | 307 | 1.1 |
Notes.Cosmic-ray ionization rates, ζ, are in 10-14 s-1 and sizes, L, in parsecs. Computed H
column densities, N(J,K), are in 1014 cm-2. The last three columns present computed molecular fractions, mean gas temperatures in Kelvin, and mean electronic fractions in 10-3.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.