Changes between Version 6 and Version 7 of GalaxyParameters

Timestamp:

Dec 3, 2014, 4:55:35 PM (12 years ago)

Author:

bills

Comment:

--

GalaxyParameters

@@ -42 +42 @@
 5. The sums in the formulas for Rt and Ra are performed.
 
-The new code was used in psphotStack for SAS.37. 
+== Bumpiness ==
 
+[http://adsabs.harvard.edu/abs/2006ApJ...644...30B Blakeslee, et al. 2006] defined another galaxy shape measurment that we are adding to psphotStack.
+See Equation (1) in section 3.1.3  This parameter was found to be useful for segregating galaxies by morphological type. 
+
+In psphotStack we do this measurement  is done in the same loops that do the Rt and Ra measurements. For the sigma squared value in the numerator we
+take the values from the variance image.
+
+== Results == 
+The new code was used in psphotStack for SAS.37. The results are saved in new columns in the XSRC extension of the staticsky and skycal cmf files.
+G_RT, G_RA, G_S2, G_BUMPY.
+
+