s ▁because ▁of ▁so ▁many ▁cr iss cross ing ▁tra ils ▁of ▁stars . ▁ ▁The ▁S ag itt arius ▁Stream ▁of ▁the ▁S ag itt arius ▁D war f ▁Elli pt ical ▁Gal axy ▁( S ag DE G ) ▁domin ates ▁the ▁Field . ▁It ▁has ▁a ▁split ▁trail ▁within ▁the ▁area ▁of ▁the ▁Field ▁of ▁Stream s , ▁because ▁S ag DE G ▁has ▁wrapped ▁around ▁the ▁Mil ky ▁Way ▁Gal axy ▁multiple ▁times , ▁which ▁has ▁resulted ▁in ▁over la pping ▁tra ils . ▁The ▁for king ▁of ▁the ▁trail ▁has ▁made ▁it ▁possible ▁to ▁infer ▁the ▁organization ▁of ▁dark ▁matter ▁in ▁the ▁inner ▁h alo ▁of ▁the ▁Mil ky ▁Way ▁Gal axy , ▁resulting ▁in ▁the ▁determ ination ▁that ▁it ▁is ▁distributed ▁in ▁a ▁round ▁spher ical ▁manner , ▁as ▁opposed ▁to ▁the ▁expected ▁fl atten ed ▁s ph ero id . ▁The ▁shape ▁of ▁the ▁streams ▁also ▁implies ▁that ▁the ▁dark ▁matter ▁is ▁very ▁cold ▁cold ▁dark ▁matter , ▁due ▁to ▁the ▁thin ▁tra ils , ▁and ▁pers isting ▁existence . ▁ ▁Also ▁appearing ▁in ▁the ▁Field ▁is ▁the ▁Mon oc eros ▁Ring , ▁which ▁was ▁not ▁discovered ▁by ▁the ▁team ▁which ▁discovered ▁the ▁Field . ▁ ▁See ▁also ▁ ▁St ell ar ▁stream ▁ ▁List ▁of ▁stell ar ▁streams ▁ ▁References ▁ ▁S ources ▁▁ ▁The ▁Ast ro phys ical ▁Journal , ▁Volume ▁ 6 5 8 , ▁Issue ▁ 1 , ▁pp .   3 3 7 – 3 4 4 . ▁" An ▁Or