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Validation: src/mors/baraffe.py

This page tracks the @pytest.mark.reference_pinned tests that anchor the behaviour of mors.baraffe against a published source.

Test id Reference Source page Scope
tests/test_baraffe.py::test_baraffe_track_matches_published_values Baraffe et al. (2015) 1, A&A 577, A42 2015A&A...577A..42B Pins the interpolated luminosity, stellar radius, and orbital insolation at two stellar masses (0.047 and 1.113 Msun) against the Baraffe et al. (2015) evolutionary tracks, and asserts each returned quantity is strictly positive.

Re-derivation note

mors.BaraffeTrack reads the Baraffe et al. (2015) evolutionary tracks (downloaded to FWL_DATA) for a given stellar mass and interpolates the bolometric luminosity, stellar radius, and derived orbital insolation as a function of age. The pinned values are the interpolation output for the two tabulated masses at the ages listed in the test data.

The two masses span a factor of roughly 24 in stellar mass. At a common age the interpolated luminosity of the 1.113 Msun track lies more than two orders of magnitude above the 0.047 Msun track, so a regression that selects the wrong track index, or that returns a mass-independent value, moves the result far outside the rtol=1e-5 tolerance.

Anchor type

Published benchmark. The Baraffe et al. (2015) tracks are the benchmark; the pinned test is accompanied by a positivity guard, and a companion physics_invariant test (test_baraffe_luminosity_increases_with_mass) asserts the monotone increase of luminosity with mass at fixed age as the property-based second-line check.

Cross-references

  • src/mors/baraffe.py: loads and interpolates the Baraffe et al. (2015) tracks.
  • PROTEUS consumes the Baraffe luminosity and insolation through the MORS stellar-evolution step when the Baraffe track set is selected.

References

  1. I. Baraffe, D. Homeier, F. Allard, G. Chabrier, New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit, Astronomy & Astrophysics, 577, A42, 2015. ADS. ↩