Column-Density Estimation from the Equivalent Widths of Absorption Doublets

arXiv:2608.04088 · astro-ph.GA, astro-ph.HE, astro-ph.IM · Submitted 2026-08-04 · Read on arXiv

Avshalom Badash, Doron Kushnir

astro-ph.GA, astro-ph.HE, astro-ph.IM

Submitted: 2026-08-04

Comments: 13 pages, 2 figures, 2 tables. Submitted to MNRAS

Code: https://github.com/DoronKushnir/doublet_inversion

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Accuracy — 6× in this paper · explained in 1 episode
• Calibration — 3× in this paper · explained in 7 episodes
• Consistency — 2× in this paper · explained in 3 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Additivity — 1× in this paper · explained in 1 episode
• Alternation — 1× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• Benchmarking — 1× in this paper · explained in 3 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes

Sources

• Narrow absorption lines from intervening material in supernovae. IV. Type Ia supernovae: Na I D line strength relating to external material and intrinsic properties
• VoigtFit: A Python package for Voigt profile fitting
• What is your favorite transient event? SOXS is almost ready to observe!

Related papers

• Apparent Stability in Self-Gravitating Turbulence and the Evolution of Molecular Clouds
• Two sets of potential-density basis pairs for the study of radial perturbations in collisionless spherical stellar systems
• Constraining reionization-era Ly alpha escape with JELS-MUSE: a highly complete H alpha-selected sample at z about6.1
• Deriving volume density profiles of filaments from observed surface densities
• Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
• MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies