EZPADOVA – A python package that allows you to download PADOVA isochrones directly from their website

EZPADOVA – A python package that allows you to download PADOVA isochrones directly from their website#

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This small package provides a direct interface to the PADOVA/PARSEC isochrone webpage (http://stev.oapd.inaf.it/cgi-bin/cmd). It compiles the URL needed to query the website and retrives the data into a python variable.

This package has been tested on python 3.9, 3.10, 3.11, 3.12 through the github actions CI.

New in version 2.0#

  • Updated the interface to the new PADOVA website (i.e. >=3.8) [minor changes in the form format from 3.7]

  • New function get_isochrone does all the slices directly (combines get_Z_isochrones, get_t_isochrones, and get_one_isochrone which are now deprecated.)

  • get_isochrone handles ages, log ages, Z and [M/H] as inputs (see documentation).

  • Most of the code has been rewritten to be more robust and easier to maintain. In particular the parsing of the online form has been improved.

  • Many integration tests to keep checking the package interface.

  • The output format is now a pandas.DataFrame instead of the internal format. (though previous aliases of columns are no more available)

  • added resample_evolution_phase function to resample the label into a continuous evolution phase instead of discrete labels.

  • Documentation has been updated and (hopefully) improved. – more in progress

Available photometric systems, parameters, and default values: EzPadova configuration file

Installation#

  • Using pip: Use the –user option if you don’t have permissions to install libraries

pip install git+https://github.com/mfouesneau/ezpadova

  • Manually:

git clone https://github.com/mfouesneau/ezpadova
cd ezpadova
python -m pip install .

Example usage (deprecated)#

Deprecated since version 2.0: The following examples are deprecated and will be removed in the next version. Please use the new interface ezpadova.parsec.get_isochrones() instead.

  • Basic example of downloading a sequence of isochrones, plotting, saving

from ezpadova import get_t_isochrones
r = get_t_isochrones(6.0, 7.0, 0.05, 0.02)

import pylab as plt
plt.scatter(r['logT'], r['logL'], c=r['logA'], edgecolor='None')
plt.show()

  • getting only one isochrone

from ezpadova import get_one_isochrone
r = get_one_isochrone(1e7, 0.02, model='parsec12s', phot='YBC_spitzer')

Contents#

Contents