# A Where to find galaxy mass function observational data?

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1. Mar 31, 2016

Dear all,

I am looking for observational data for the number count of galaxy mass function:
$$dn/dM$$ in terms of redshift and also mass, to compare with theories.
I know that I can use HIPASS data (most probably), but as I am new to the field, I have to idea:
1- where to find the data
2- How to convert the observational data to dn/dM ?

2. Apr 3, 2016