# AUTHOR: Walcher, Wisotzki 
# SOURCE: NED, SDSS DR7, own analysis
# DATE: 2016-01-18
# VERSION: 2.0
# COLAPRV: CJW 
# PUBAPRV: none 

This table provides some basic values for the CALIFA sample. 
The name is from NED. 
RA, Dec, pure redshift, and isophotal diameter are from the SDSS DR7. 
The Vmax values have been calculated based on pure redshift and 
apparent diameter. 


This table provides the information needed for applying volume corrections to
the CALIFA sample. The table column vmax specifies the CALIFA survey volume per
object, expressed in Mpc^3. Applying a volume correction means that each galaxy
is assigned a weight of 1/vmax in summations or averages. 

Note that these values are for the full mother sample; for application 
to the subset of spectroscopically observed objects each vmax needs to be 
multiplied with the fraction of the mother sample covered. 

Assumptions that went into the calculation of vmax: 
* The CALIFA geometric footprint of 8700 deg^2 
* Cosmological angular size distances are calculated adopting H0 = 70 km/s/Mpc,
  Omega_m = 0.3, Omega_lambda = 0.7. 
* Angular isophotal sizes were computed as isoA_r = Diso / d_A, 
  i.e. changes in size due to redshifting in the spectrum were neglected.
* The two CALIFA galaxies (#938, #939) that were in DR2 as part of the main sample 
  had originally been added by hand. For statistical work they should be ignored. 
  As they are thus in spirit the same as CALIFA extension galaxies, they have been 
  shifted to those tables.