exotic_ld.StellarLimbDarkening.compute_quadratic_ld_coeffs

StellarLimbDarkening.compute_quadratic_ld_coeffs(wavelength_range, mode, custom_wavelengths=None, custom_throughput=None, mu_min=0.1, return_sigmas=False)[source]

Compute the quadratic limb-darkening coefficients.

Parameters:

  • wavelength_range (array_like, (start, end)) – Wavelength range over which to compute the limb-darkening coefficients. Wavelengths must be given in angstroms and the values must fall within the supported range of the corresponding instrument mode.

  • mode (string) –

    Instrument mode that defines the throughput. Modes supported for Hubble:

    ’HST_STIS_G430L’, ‘HST_STIS_G750L’, ‘HST_WFC3_G280p1’, ‘HST_WFC3_G280n1’, ‘HST_WFC3_G102’, ‘HST_WFC3_G141’.

    Modes supported for JWST:

    ’JWST_NIRSpec_Prism’, ‘JWST_NIRSpec_G395H’, ‘JWST_NIRSpec_G395M’, ‘JWST_NIRSpec_G235H’, ‘JWST_NIRSpec_G235M’, ‘JWST_NIRSpec_G140H-f100’, ‘JWST_NIRSpec_G140M-f100’, ‘JWST_NIRSpec_G140H-f070’, ‘JWST_NIRSpec_G140M-f070’, ‘JWST_NIRISS_SOSSo1’, ‘JWST_NIRISS_SOSSo2’, ‘JWST_NIRCam_F322W2’, ‘JWST_NIRCam_F444’, ‘JWST_MIRI_LRS’.

    Modes for photometry:

    ’Spitzer_IRAC_Ch1’, ‘Spitzer_IRAC_Ch2’, ‘TESS’.

    Alternatively, use ‘custom’ mode. In this case the custom wavelength and custom throughput must also be specified.

  • custom_wavelengths (array_like, optional) – Wavelengths corresponding to custom_throughput [angstroms].

  • custom_throughput (array_like, optional) – Throughputs corresponding to custom_wavelengths.

  • mu_min (float) – Minimum value of mu to include in the fitting process.

  • return_sigmas (boolean) – Return the uncertainties, or standard deviations, of each fitted limb-darkening coefficient. Default: False.

Returns:

  • if return_sigmas == False –

    (c1, c2)tuple

    Limb-darkening coefficients for the quadratic law.

  • else –

    ((c1, c2), (c1_sigma, c2_sigma))tuple of tuples

    Limb-darkening coefficients for the quadratic law and uncertainties on each coefficient.