redback.transient_models.spectral_models.elementary_p_cygni_profile

redback.transient_models.spectral_models.elementary_p_cygni_profile(wavelength, lambda_rest, v_absorption, absorption_depth, emission_strength, v_width, continuum_flux=1.0)[source]

Elementary P-Cygni profile with simple parameterization

Simpler model for quick fits, using Gaussian absorption and emission components.

Parameters:

  • wavelength (array) – Wavelength array in Angstroms

  • lambda_rest (float) – Rest wavelength of transition in Angstroms

  • v_absorption (float) – Velocity of absorption minimum in km/s (positive value)

  • absorption_depth (float) – Depth of absorption trough (0 to 1, fraction of continuum)

  • emission_strength (float) – Strength of emission peak (relative to continuum)

  • v_width (float) – Velocity width of features in km/s

  • continuum_flux (float) – Continuum flux level

Returns:

flux – P-Cygni profile

Return type:

array

Examples

>>> wave = np.linspace(6000, 6700, 1000)
>>> flux = elementary_p_cygni_profile(wave, lambda_rest=6355,
...                                    v_absorption=11000,
...                                    absorption_depth=0.4,
...                                    emission_strength=0.2,
...                                    v_width=1500)