QSFit is a software package to automatically perform spectral analysis of Active Galactic Nuclei (AGN) optical/UV spectra. It provides estimates of:

  - AGN continuum luminosities and slopes at several rest frame wavelengths;
  - host galaxy luminosities (for sources with z < 0.8);
  - luminosities, widths and velocity offsets of 20 individual emission lines (Hα, Hβ, MgII, [OIII], CIV, etc.), and luminosity of the blended Balmer lines (n ≥ 7);
  - luminosities of iron blended lines at optical and UV wavelengths;
  - luminosity of the Balmer continuum;
  - several "quality flags" to assess the reliability of the results.

The main purpose of QSFit is to allow anyone to perform AGN spectral analysis in a simple, replicable and shareable way. The code is available on Github and can be easily customized for specific purposes.

See the reference paper: Calderone, g., et al., MNRAS, 472, 4051-4080 (2017)