Maps of C¹⁸O(1–0) intensity integrated every 0.4 km s^-1 to illustrate the separation of the gas into filaments. The dashed lines indicate our best guess of each filament axis, and the star symbols mark the positions of AB Aur (larger) and SU Aur (smaller). First contour and interval are 0.2 K km s^-1. Offsets are referred to , δ(J2000) =  + 30°38′04′′. The LSR velocity range of integration is indicated in the upper left corner of each panel.