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Figure 1: Images of the H I sky contributed by emission in single channels centered near v = -35 km s-1. Top: H I emission in a single channel, 5 km s-1 wide, from data in the Bell Labs Survey (Stark et al. 1992). Middle: H I emission in a single channel, 1.3 km s-1 wide, from data in the first edition of the LDS (Hartmann & Burton 1997). Bottom: H I emission in a single channel, 1.3 km s-1 wide, from the LAB Survey of the entire Galactic sky, combining the IAR and LDS material and incorporating a refined determination of the stray-radiation properties. The intensity scale is logarithmic, emphasizing low level emission ( -0.21 < T < 50 K), and is the same in all maps of Figs. 1 and 2. |
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Figure 2: Images of the H I sky contributed by emission in single channels centered near v = +35 km s-1. Top: H I emission in a single channel, 5 km s-1 wide, from data in the Bell Labs Survey (Stark et al. 1992). Middle: H I emission in a single channel, 1.3 km s-1 wide, from data in the first edition of the LDS (Hartmann & Burton 1997). Bottom: H I emission in a single channel, 1.3 km s-1 wide, from the LAB Survey of the entire Galactic sky, combining the IAR and LDS material and incorporating a refined determination of the stray-radiation properties. The intensity scale is logarithmic, emphasizing low level emission ( -0.21 < T < 50 K), and is the same in all maps of Figs. 1 and 2. |
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Figure 3:
H I emission integrated over the velocity range
-400 < v <
+400 km s-1 in the LAB dataset, shown in an Aitoff projection.
The Galactic center is in the middle. The integrated
emission (
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Figure 4:
Anticenter view of the H I emission integrated over the
velocity range
-400 < v < -100 km s-1 in the LAB dataset, shown in
an Aitoff projection. The integrated emission (
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Figure 5:
Anticenter view of the H I emission integrated over the
velocity range
+100 < v < +400 km s-1 in the LAB dataset, shown in an
Aitoff projection. The integrated emission (
![]() ![]() |
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