diff --git a/data/GalaxyStellarMassHaloMass/conversion/convertBehroozi2013RatioStellar.py b/data/GalaxyStellarMassHaloMass/conversion/convertBehroozi2013RatioStellar.py
new file mode 100644
index 00000000..dc425f92
--- /dev/null
+++ b/data/GalaxyStellarMassHaloMass/conversion/convertBehroozi2013RatioStellar.py
@@ -0,0 +1,65 @@
+from velociraptor.observations.objects import ObservationalData
+from velociraptor.fitting_formulae.smhmr import moster_raw, behroozi_raw
+
+import unyt
+import numpy as np
+import os
+import sys
+
+# Exec the master cosmology file passed as first argument
+with open(sys.argv[1], "r") as handle:
+    exec(handle.read())
+
+# Cosmology
+h_sim = cosmology.h
+
+output_filename = "Behroozi2013RatioStellar.hdf5"
+output_directory = "../"
+
+if not os.path.exists(output_directory):
+    os.mkdir(output_directory)
+
+
+halo_masses = np.logspace(4, 16, 512)
+stellar_masses = behroozi_raw(0.0, halo_masses)
+
+# Meta-data
+comment = (
+    "Fit obtained directly from paper using the smhmr module in "
+    "velociraptor-python. No cosmology correction needed. "
+    "Shows the ratio betweeen stellar mass and halo mass"
+)
+citation = "Behroozi et al. (2013)"
+bibcode = "2013ApJ...770...57B"
+name = "Fit to the stellar mass - stellar halo mass relation at z=0."
+plot_as = "line"
+redshift = 0.0
+h = h_sim
+
+# Write everything
+processed = ObservationalData()
+processed.associate_x(
+    stellar_masses * unyt.Solar_Mass,
+    scatter=None,
+    comoving=False,
+    description="Galaxy Stellar Mass",
+)
+processed.associate_y(
+    (stellar_masses / halo_masses) * unyt.dimensionless,
+    scatter=None,
+    comoving=True,
+    description="Galaxy Stellar Mass / Halo Mass",
+)
+processed.associate_citation(citation, bibcode)
+processed.associate_name(name)
+processed.associate_comment(comment)
+processed.associate_redshift(redshift)
+processed.associate_plot_as(plot_as)
+processed.associate_cosmology(cosmology)
+
+output_path = f"{output_directory}/{output_filename}"
+
+if os.path.exists(output_path):
+    os.remove(output_path)
+
+processed.write(filename=output_path)
diff --git a/data/GalaxyStellarMassHaloMass/conversion/convertMoster2013RatioStellar.py b/data/GalaxyStellarMassHaloMass/conversion/convertMoster2013RatioStellar.py
new file mode 100644
index 00000000..80350254
--- /dev/null
+++ b/data/GalaxyStellarMassHaloMass/conversion/convertMoster2013RatioStellar.py
@@ -0,0 +1,65 @@
+from velociraptor.observations.objects import ObservationalData
+from velociraptor.fitting_formulae.smhmr import moster_raw, behroozi_raw
+
+import unyt
+import numpy as np
+import os
+import sys
+
+# Exec the master cosmology file passed as first argument
+with open(sys.argv[1], "r") as handle:
+    exec(handle.read())
+
+# Cosmology
+h_sim = cosmology.h
+
+output_filename = "Moster2013RatioStellar.hdf5"
+output_directory = "../"
+
+if not os.path.exists(output_directory):
+    os.mkdir(output_directory)
+
+
+halo_masses = np.logspace(4, 16, 512)
+stellar_masses = moster_raw(0.0, halo_masses)
+
+# Meta-data
+comment = (
+    "Fit obtained directly from paper using the smhmr module in "
+    "velociraptor-python. No cosmology correction needed. "
+    "Shows the ratio betweeen stellar mass and halo mass"
+)
+citation = "Moster et al. (2013)"
+bibcode = "2013MNRAS.428.3121M"
+name = "Fit to the stellar mass - stellar halo mass relation at z=0."
+plot_as = "line"
+redshift = 0.0
+h = h_sim
+
+# Write everything
+processed = ObservationalData()
+processed.associate_x(
+    stellar_masses * unyt.Solar_Mass,
+    scatter=None,
+    comoving=False,
+    description="Galaxy Stellar Mass",
+)
+processed.associate_y(
+    (stellar_masses / halo_masses) * unyt.dimensionless,
+    scatter=None,
+    comoving=True,
+    description="Galaxy Stellar Mass / Halo Mass",
+)
+processed.associate_citation(citation, bibcode)
+processed.associate_name(name)
+processed.associate_comment(comment)
+processed.associate_redshift(redshift)
+processed.associate_plot_as(plot_as)
+processed.associate_cosmology(cosmology)
+
+output_path = f"{output_directory}/{output_filename}"
+
+if os.path.exists(output_path):
+    os.remove(output_path)
+
+processed.write(filename=output_path)