synthesizer.photoionisation.cloudy17

Given an SED (from an SPS model, for example), generate a cloudy atmosphere grid. Can optionally generate an array of input files for selected parameters.

Functions

synthesizer.photoionisation.cloudy17.convert_cloudy_wavelength(x)

Convert a cloudy wavelength string (e.g. 6562.81A, 1.008m) to a wavelength float in units of angstroms.

Parameters:

x (str) – A cloudy wavelength string

Returns:

float

The wavelength in Angstroms

synthesizer.photoionisation.cloudy17.create_cloudy_input(model_name, shape_commands, abundances, output_dir='./', **kwargs)

A generic function for creating a cloudy input file

Parameters:

• model_name (str) – The model name. Used in the naming of the outputs

• shape_commands (list) – List of strings describing the cloudy input commands

• abundances – (Abundances object) A synthsizer Abundances object

• output_dir (str) – The output dir

Returns:

list

A list of cloudy commands

synthesizer.photoionisation.cloudy17.read_continuum(filename, return_dict=False)

Extract just the spectra from a cloudy.cont file

Parameters:

filename (str) – The cloudy filename

Returns:

lam (array-like, float)

The wavelength grid

nu (array-like, float)

The frequency grid

incident (array-like, float)

The incident spectrum

transmitted (array-like, float)

The transmitted spectrum

nebular (array-like, float)

The nebular spectrum

nebular_continuum (array-like, float)

The nebular continuum spectrum

total (array-like, float)

The total spectrum

linecont (array-like, float)

The line contribution spectrum

alternatively returns a dictionary

synthesizer.photoionisation.cloudy17.read_linelist(filename, extension='elin')

Parameters:

• filename (str) – The cloudy filename

• extension (str) – The extension of the file

Returns:

line_ids (list)

A list of line identificaitons

wavelengths (list)

A list of the line wavelengths

luminosities (list)

A list of the luminosities

synthesizer.photoionisation.cloudy17.read_lines(filename, extension='lines')

Read a full line list from a cloudy output file.

Parameters:

• filename (str) – The cloudy filename

• extension (str) – The extension of the file

Returns:

line_ids (list)

A list of line identificaitons

blends (list)

A list containing flags whether the line is a blend

wavelengths (list)

A list of the line wavelengths

intrinsic (list)

A list of the intrinsic luminosities

emergent (list)

A list of emergent luminosities

synthesizer.photoionisation.cloudy17.read_wavelength(filename)

Extract just the wavelength grid from cloudy .cont file and reverse the order

Parameters:

filename (str) – The cloudy filename

Returns:

ndnarray

The wavelength grid

Classes

class synthesizer.photoionisation.cloudy17.ShapeCommands

A class for holding different cloudy shape commands

cloudy_agn(aox=-1.4, auv=-0.5, ax=-1.35)

A function for specifying the cloudy AGN model. See 6.2 Hazy1.pdf.

Parameters:

• model_name (str) – User defined name of the model used for cloudy inputs and outputs

• TBB (float) – The Big Bump temperature

• aox (float) – The x-ray slope (default value from Calabro CEERS AGN model)

• auv (float) – The uv-slope (default value from Calabro CEERS AGN model)

• ax (float) – Slope normalisation

Returns:

list

a list of strings with the cloudy input commands

table_sed(lam, lnu, output_dir='./')

A function for creating a cloudy input file using a tabulated SED.

TODO: allow the user to instead specify nu and to automatically convert units if provided

Parameters:

• model_name (str) – User defined name of the model used for cloudy inputs and outputs.

• lam (array or unyt_array) – Wavelength grid with or without units (via unyt)

• lnu (array) – Spectral luminosity density

• output_dir (str) – Output directory path

Returns:

list

a list of strings with the cloudy input commands