An Introduction to the 013 Trichord & Super Augmented Scale
Among other names, it's been identified primarily as the inverse of Messaen's 3rd mode of limited transposition, as well as "Tcherepnin Nonatonic Mode 1", "Genus Chromaticum", and "Augmented Nine".
I'll still go with "Super Augmented", however, since among other aspects of its scalar construction, it contains two overlapping 6-note Augmented Scales, linked by a common Augmented triad.
"Pretty super!", I'd say. It also contains a trio of 013 Trichords, a Major 3rd apart - forming a 9-note (nonetonic) scale.
"But..what", you ask "is an 013 Trichord?" Or - better yet - what is a trichord, period?