radial_velocity_uncertainty

radial_velocity_uncertainty#

pygaia.errors.spectroscopic.radial_velocity_uncertainty(grvs: ndarray[tuple[int], dtype[float]], teff: ndarray[tuple[int], dtype[float]], logg: ndarray[tuple[int], dtype[float]], release: str = 'dr4') → ndarray[tuple[int], dtype[float]]#

Simulate the Gaia radial velocity uncertainties for the input list of \(G_\mathrm{RVS}\), \(T_\mathrm{eff}\), and \(\log(g)\) values.

Parameters:

  • grvs (ndarray, float) – Value(s) of \(G_\mathrm{RVS}\) for which the calculate the radial velocity uncertainty.

  • teff (ndarray, float) – Value(s) of \(T_\mathrm{eff}\) (in K) for which to calculate the radial velocity uncertainty.

  • logg (ndarray, float) – Value(s) of \(\log(g)\) for which to calculate the radial velocity uncertainty.

  • release (str) – Gaia data release to simulate

Returns:

sigma_rv – Value(s) of the radial velocity uncertainty. NaNs are returned for input magnitudes, temperatures, and surface gravities outside the grids as defined in Katz et al (2022) (their figures E.1 and F.1), or outside the model validity ranges quoted on the Gaia Science Performance pages.

Return type:

ndarray, float

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