pygnuastro.cosmology.to_absolute_mag

pygnuastro.cosmology.to_absolute_mag()

Return the conversion from apparent to absolute magnitude for an object at redshift z. This value has to be added to the apparent magnitude to give the absolute magnitude of an object at redshift z.

Parameters:

  • z (float) – Redshift

  • H0 (float/None) – Hubble constant in units of km/sec/Mpc

  • olambda (float/None) – Cosmological Constant

  • omatter (float/None) – Matter Density

  • oradiation (float/None) – Radiation Density

Returns:

The conversion from apparent to absolute magnitude for an object at redshift z. This value has to be added to the apparent magnitude to give the absolute magnitude of an object at redshift z.

Return type:

float