Fig. 1
OB associations near the Sun, with Sco-Cen stars marked (from Preibisch & Mamajek 2008). This top view onto the Galaxy in the local vicinity shows that several nearby groups of massive stars can be identified, with the Scorpius-Centaurus group as the closest to the Sun. This compilation is based on Hipparcos position measurements of nearby stars (for details see Preibisch & Mamajek 2008).
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