Stellar halo substructures were identified using statistical photometric parallax of blue main sequence turnoff stars from fourteen Sloan Digital Sky Survey stripes in the north Galactic cap .
Four structures are consistent with previous measurements of the Sagittarius dwarf tidal stream : the leading tail , the “ bifurcated ” stream , the trailing tail , and Stream C. The stellar overdensity in Virgo , about 15 kpc from the Sun , could arise from the crossing of the Parallel Stream and a new , candidate stream dubbed the Perpendicular Stream .
The data suggests the presence of a wide stream near NGC 5466 , with a distance of 5 to 15 kpc .
Measurements of the flattening of the smooth stellar halo from the fourteen stripes average q = 0.58 , with a dispersion of 0.04 .