make_extinguished_grid

beast.physicsmodel.creategrid.make_extinguished_grid(spec_grid, filter_names, extLaw, avs, rvs, fAs=None, av_prior_model={'name': 'flat'}, rv_prior_model={'name': 'flat'}, fA_prior_model={'name': 'flat'}, chunksize=0, add_spectral_properties_kwargs=None, absflux_cov=False, filterLib=None)[source]

Extinguish spectra and extract an SEDGrid through given series of filters (all wavelengths in stellar SEDs and filter response functions are assumed to be in Angstroms)

Parameters:

  • spec_grid (string or grid.SpectralGrid) –

    if string: spec_grid is the filename to the grid file with stellar spectra the backend to load this grid will be the minimal invasive: ‘HDF’ if possible, ‘cache’ otherwise.

    if not a string, expecting the corresponding SpectralGrid instance (backend already setup)

  • filter_names (list) – list of filter names according to the filter lib

  • Avs (sequence) – Av values to iterate over

  • av_prior_model (list) – list including prior model name and parameters

  • Rvs (sequence) – Rv values to iterate over

  • rv_prior_model (list) – list including prior model name and parameters

  • fAs (sequence (optional)) – f_A values to iterate over f_A can be omitted if the extinction Law does not use it or allow fixed values

  • fA_prior_model (list) – list including prior model name and parameters

  • chunksize (int, optional (default=0)) – number of extinction model variations to generate at each cycle. Note that this means len(spec_grid * chunksize) If default <= 0, all models will be returned at once.

  • filterLib (str) – full filename to the filter library hd5 file

  • add_spectral_properties_kwargs (dict) – keyword arguments to call add_spectral_properties() at each iteration to add model properties from the spectra into the grid property table

  • asbflux_cov (boolean) – set to calculate the absflux covariance matrices for each model (can be very slow!!! But it is the right thing to do)

Returns:

g – final grid of reddened SEDs and models

Return type:

grid.SpectralGrid