Table 1
Comparison of basic parameters of selected H i surveys of the Milky Way.
| LAB | GASS | EBHIS | HI4PI | Unit | |
|
|
|||||
| δ | Full | ≤ 1° | ≥ − 5° | Full | |
| ϑ FWHM | 36′ |
|
|
|
|
| | νlsr | | ≤ 460 † | ≤ 470 | ≤ 600 | ≤ 600 ∗ | km s-1 |
| Δν | 1.03 | 0.82 | 1.29 | 1.29 | km s-1 |
| δν | 1.25 | 1.00 | 1.49 | 1.49 | km s-1 |
| σ rms | 80 | 55 ⋆ | 90 | ~ 43 | mK |
|
|
|||||
|
3.9 | 2.5 | 4.7 | ~ 2.3 | 1018 cm-2 |
|
16.1 | 2.1 | 1.8 | ~ 2.0 | Jy km s-1 |
Notes. The table quotes the declination range, δ, angular resolution ϑFWHM, velocity interval, νlsr, channel separation, Δν, spectral resolution, δν, and brightness temperature noise level, σrms. The bottom two rows quote theoretical 5σ detection limits (velocity-integrated intensity) integrating over a Gaussian profile of 20 km s-1 line width (FWHM) for surface brightness and point sources, respectively. Adapted from Winkel et al. (2016a).
Re-scaled intensity calibration (see Kalberla & Haud 2015).
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