Hyperz: Getting started

This code was originally developed by Pelló et al. (1996) and Miralles (1998) . Then, it has been improved, generalized, modified to allow a friendly I/O of data and exhaustively tested (Bolzonella et al. 2000) to reach the present public version.

In the following of this section we will describe the procedure followed by hyperz and the meaning of all the parameters involved in the computation.

To start, you simply have to type 
and the program will ask you the name of the main parameter file, which default is zphot.param:
hyperz photometric redshift code - Version 1.1 (December 11, 2000)
by Micol Bolzonella, Roser Pello', Joan-Marc Miralles
More information at http://webast.ast.obs-mip.fr/hyperz/

Name of parameter file
[default = zphot.param]

After entering the name of your parameter file, or pushing ``return'' if the name corresponds to the default, the program will notify you the status of input files, i.e. the number of SEDs you required, the number of filters and of objects read from the catalogue and eventually it will report error messages in case of problems reading some input file. For instance:
Reading parameter file :
There are 5 synthetic spectra
There are 5 filters
There are 1000 objects in the catalogue
Reading reference sed:
ID: Kurucz's model for Alpha Lyrae. 9400K BB interpolation 1.8-200 microns

There are 3303 points in Vega
Reading synthetic spectra :
Type 1 : /home/mbolzone/ZPHOT/templates/Burst.ised
Type 2 : /home/mbolzone/ZPHOT/templates/E.ised
Type 3 : /home/mbolzone/ZPHOT/templates/Sa.ised
Type 4 : /home/mbolzone/ZPHOT/templates/Sc.ised
Type 5 : /home/mbolzone/ZPHOT/templates/Im.ised
Building hypercube ...
                                            ... done
CPU time involved : 384.940002 seconds
I'm working ...
Done !!!
Total CPU time involved : 749.229996 seconds

The hypercube computation (see the next section) will take from some seconds to some minutes, the CPU time depending on your template choice, on the number of redshift and reddening steps, in addition to the clock of your machine.


micol bolzonella