Image Details
Caption: Figure 1.
The top figure shows the normalized number counts distribution of OB-type stars without considering selection effects during this work. The bottom one is the sky coverage of our OB-type stars adopted from Liu et al. (2019). The area of the sky is mainly the Galactic anticenter direction; the sample is mainly in the range l = [140° 210°], b = [−3°, 5°], with a relatively small contribution from other areas.
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