Changes between Version 15 and Version 16 of psphot_extended_source_fit

Timestamp:

Sep 6, 2013, 11:50:40 AM (13 years ago)

Author:

bills

Comment:

--

psphot_extended_source_fit

@@ -32 +32 @@
     I(r) = I(0) exp[ -k * R ** (1 / m) ]
 
-psphot extended source parameters meausred
+psphot extended source parameters measured
    EXT_INST_MAG
    EXT_WIDTH_MAJ
@@ -40 +40 @@
 }}}
 
-Since all of the simulated galaxes in this sample have bulge inclination == 1 and disk inclination == 1,
+Since all of the simulated galaxies in this sample have bulge inclination == 1 and disk inclination == 1,
 the major an minor axes should be equal and the angle will
 unmeasurable due to noise.
@@ -79 +79 @@
 [[Image(bulge_widths.jpg)]] 
 
+== Exponential Model ==
+{{
+Functional Form
 
+    I(r) = I(0) exp[ -k * R ]
+
+psphot extended source parameters measured
+   EXT_INST_MAG
+   EXT_WIDTH_MAJ
+   EXT_WIDTH_MIN
+   EXT_THETA
+}}}
+
+Since all of the simulated galaxies in this sample have bulge inclination == 1 and disk inclination == 1,
+the major an minor axes should be equal and the angle will
+unmeasurable due to noise.
+
+=== Exponential magnitudes ===
+In general the magnitude fit with exponential model is slightly less than the expected value. However when the galaxy
+sample is restricted to pure disks the magnitude differences are clustered around zero.
+
+[[Image(dmag_exp.jpg)]] [[Image(dmag_exp_disks.jpg]]