Gaia Data Release 1
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Fig. 9

image

Star counts per square degree as a function of magnitude in several (l, b) directions. Crosses linked with lines are for Gaia DR1 data, filled blue circles are simulations from GOG18. Error bars represent the Poisson noise for one square degree field. The bottom row shows two regions impacted by the scanning law and the filtering of stars with a low number of observations.

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