diff --git a/COSMIC/COSMIC_v3_galaxy.py b/COSMIC/COSMIC_v3_galaxy.py
deleted file mode 100644
index b646e44..0000000
--- a/COSMIC/COSMIC_v3_galaxy.py
+++ /dev/null
@@ -1,87 +0,0 @@
-"""
-* COSMIC - GALAXY
-* Version 3 
-@ Yaël Moussouni
-@ Unistra, P&E, MSc1-MoFP
-@ Observatory of Strasbourg (Intern)
-"""
-
-import numpy as np
-import matplotlib.pyplot as plt
-import amuse.units.units as u
-
-class MilkyWay_AMUSE(object):
-    # THIS IS A COPY OF https://github.com/amusecode/amuse/blob/cdd21cc5cb06e40ccf5ecb86d513d211634e2689/examples/textbook/solar_cluster_in_galaxy_potential.py#L37
-
-    def __init__(self, Mb=1.40592e10| u.MSun,
-                 Md=8.5608e10| u.MSun,
-                 Mh=1.07068e11 | u.MSun  ):
-        self.Mb= Mb
-        self.Md= Md
-        self.Mh= Mh
-
-    def get_potential_at_point(self,eps,x,y,z):
-        r=(x**2+y**2+z**2)**0.5
-        R= (x**2+y**2)**0.5
-        # buldge
-        b1= 0.3873 |u.kpc
-        pot_bulge= -u.constants.G*self.Mb/(r**2+b1**2)**0.5 
-        # disk
-        a2= 5.31 |u.kpc
-        b2= 0.25 |u.kpc
-        pot_disk = \
-            -u.constants.G*self.Md/(R**2 + (a2+ (z**2+ b2**2)**0.5 )**2 )**0.5
-        #halo
-        a3= 12.0 |u.kpc
-        cut_off=100 |u.kpc
-        d1= r/a3
-        c=1+ (cut_off/a3)**1.02
-        pot_halo= -u.constants.G*(self.Mh/a3)*d1**1.02/(1+ d1**1.02) \
-                  - (u.constants.G*self.Mh/(1.02*a3))\
-                      * (-1.02/c +numpy.log(c) + 1.02/(1+d1**1.02) \
-                           - numpy.log(1.0 +d1**1.02) )
-        return 2*(pot_bulge+pot_disk+ pot_halo) # multiply by 2 because it
-    						# is a rigid potential
-
-       
-    def get_gravity_at_point(self, eps, x,y,z): 
-        r= (x**2+y**2+z**2)**0.5
-        R= (x**2+y**2)**0.5
-        #bulge
-        b1= 0.3873 |u.kpc
-        force_bulge= -u.constants.G*self.Mb/(r**2+b1**2)**1.5 
-        #disk
-        a2= 5.31 |u.kpc
-        b2= 0.25 |u.kpc
-        d= a2+ (z**2+ b2**2)**0.5
-        force_disk=-u.constants.G*self.Md/(R**2+ d**2 )**1.5
-        #halo
-        a3= 12.0 |u.kpc
-        d1= r/a3
-        force_halo= -u.constants.G*self.Mh*d1**0.02/(a3**2*(1+d1**1.02))
-       
-        ax= force_bulge*x + force_disk*x  + force_halo*x/r
-        ay= force_bulge*y + force_disk*y  + force_halo*y/r
-        az= force_bulge*z + force_disk*d*z/(z**2 + b2**2)**0.5 + force_halo*z/r 
-
-        return ax,ay,az
-
-    def vel_circ(self, r ):
-        z=0 | u.kpc 
-        b1= 0.3873 |u.kpc
-        a2= 5.31 |u.kpc
-        b2= 0.25 |u.kpc
-        a3= 12.0 |u.kpc
-
-        rdphi_b = u.constants.G*self.Mb*r**2/(r**2+b1**2)**1.5
-        rdphi_d =u.constants.G*self.Md*r**2/(r**2+(a2+(z**2+b2**2)**0.5)**2 )**1.5
-        rdphi_h = u.constants.G*self.Mh*(r/a3)**0.02*r/(a3**2*(1+(r/a3)**1.02))
-
-        vel_circb =  rdphi_b
-        vel_circd = rdphi_d
-        vel_circh = rdphi_h
-
-        return (vel_circb+ vel_circd+ vel_circh)**0.5 
-
-    def stop(self):
-        return