remove_OH_line

sitelle.fit.remove_OH_line(spectrum, theta, cube, **kwargs)

Function used to remove the strange Halpha line around -400km/s (probably OH line).

DEPRECATED To be used with care, especially when there is a real Halpha signal there. By default, the line is modeled as a sinc at the position of a Halpha line offseted at a velocity of -400 km/s

Parameters:

• spectrum (1D ndarray) – the spectrum to fit
• theta (float) – incident angle on the detector corresponding to the spectrum (obtained by passing return_mean_theta = True in orcs.core.HDFCube.extract_spectrum)
• cube (SpectralCube) – Spectral cube instance from which the spectrum has been extracted.
• kwargs – Additional arguments defining the line model (same as orb.fit._prepare_input_params).

Returns:

The spectrium whithout this line (hopefully)

Return type:

1D ndarray