ALMA observation of α Cen A and B at 870 μm (~344 GHz) on 7 July 2014. At 1.35 pc distance, this binary is nearest to the Sun. The primary has spectral type G2 V, and the secondary is a K1 V dwarf. The stellar disks are unresolved, so that the synthesized beam is defined by the point-like stars and beam sizes, are given in Sect. 2. Intensity units are Jy beam-1. North is up and east to the left.
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