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Single galaxy analysis

Single galaxy analysis#

class pylick.analysis.Galaxy(ID, index_keys, wave, flux, ferr=None, mask=None, z=None, meas_method='int', bpr_thres=1.0, file_table=None, plot=False, plot_settings={}, verbose=True)#

Class optimized to handle the analysis of a single galaxy.

>>> from pylick.analysis import Galaxy
>>> ind_meas = Galaxy(...)
>>> print(ind_meas)
Parameters:

  • ID (str) – galaxy unique identifier

  • index_keys (list) – keys of the indices to measure (see pylick.indices.IndexLibrary).

  • wave (np.ndarray) – wavelength sampling of the spectrum.

  • flux (np.ndarray) – spectral fluxes corresponding to wave.

  • ferr (np.ndarray, optional) – spectral fluxes uncertainties. Defaults to None.

  • mask (np.ndarray, optional) – boolean array flagging bad (True) and good (False) pixels. Defaults to None.

  • z (float, optional) – if given, wave is assumed to be in the obs. frame and shifted to rest-frame. Defaults to None.

  • meas_method (str, optional) – method to measure the indices (“int”, “wei”, “exact”). Defaults to “int”.

  • bpr_thres (float, optional) – bad-to-total pixel ratio above which the measurement is not performed. Defaults to 1.

  • file_table (str, optional) – path to the file containing the indices definitions. Must be formatted as the default one located at data/file_table.dat.

  • verbose (bool, optional) – prints warnings and execution time in the console. Defaults to True.

property errs#

Retrieve indices uncertainties.

property names#

Retrieve indices names.

plot(filename=None, settings={})#

Produce the plot with annotated indices (see pylick.plot.spectrum_with_indices()).

Parameters:

  • plot (bool, optional) – produce plot file. Defaults to False.

  • plot_settings (dict, optional) – instructions for the plot code. Defaults to {}.

Returns:

Figure

Return type:

Figure

property vals#

Retrieve indices values.

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