README

What is this repository for?

• Galaxy cluster extraction using SZ-effect with Planck data.

Dependencies

• Install Python (worked on 2.7.11) with apt-get (linux) or homebrew (mac / linux)
• Install Python packages :

pip install numpy
pip install matplotlib
pip install healpy
pip install scipy

• The following files are required:

HFI_SkyMap_100_2048_R2.02_full.fits
HFI_SkyMap_143_2048_R2.02_full.fits
HFI_SkyMap_217_2048_R2.02_full.fits
HFI_SkyMap_353_2048_R2.02_full.fits
HFI_SkyMap_545_2048_R2.02_full.fits
HFI_SkyMap_857_2048_R2.02_full.fits

You can download them here: https://irsa.ipac.caltech.edu/data/Planck/release_2/ancillary-data/HFI_Products.html

Or go into your input folder (you will need to set it up in the next section) and type the commands:

wget https://irsa.ipac.caltech.edu/data/Planck/release_2/all-sky-maps/maps/HFI_SkyMap_100_2048_R2.02_full.fits
wget https://irsa.ipac.caltech.edu/data/Planck/release_2/all-sky-maps/maps/HFI_SkyMap_143_2048_R2.02_full.fits
wget https://irsa.ipac.caltech.edu/data/Planck/release_2/all-sky-maps/maps/HFI_SkyMap_217_2048_R2.02_full.fits
wget https://irsa.ipac.caltech.edu/data/Planck/release_2/all-sky-maps/maps/HFI_SkyMap_353_2048_R2.02_full.fits
wget https://irsa.ipac.caltech.edu/data/Planck/release_2/all-sky-maps/maps/HFI_SkyMap_545_2048_R2.02_full.fits
wget https://irsa.ipac.caltech.edu/data/Planck/release_2/all-sky-maps/maps/HFI_SkyMap_857_2048_R2.02_full.fits

How do I get set up?

• Go to the folder you want the 'ias_project' folder to be.
• Use git clone https://bitbucket.org/aazlm/ias_project.git
• Go into ias_project/src/ and open setup.py
• You have to indicate the paths to the required file in_files_path and the path for the output files out_files_path for example:

in_files_path = './input/'
out_files_path = './'
# Don't forget the '/' at the end of the path

• The program is ready to run !

How to run the cluster finder?

• Convolute the maps with ./convolute_degrade_maps.py
• Convert all maps in MJy ./convert_map_units.py
• Create the maps ./create_mask.py
• Create the SZ map ./ILC.py
• Find clusters ./find_clusters.py
• All the results can be found in the folder out_files_path you just specified.