Constructing a Hydrogen Line Library for Ly alpha Emitters at Low Redshifts (z < 0.4): Estimating Dust Extinction and Assessing Paschen line Detectability with SPHEREx

arXiv:2608.08393 · astro-ph.GA · Submitted 2026-08-09 · Read on arXiv

Junho Song, Hyunmi Song, Hyunjin Shim

astro-ph.GA

Submitted: 2026-08-09

Updated: 2026-08-11

Comments: 16 pages, 12 figures, JKAS, in press

Code: https://github.com/yongjungkim/spherexss

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

Terminology

• Dust Attenuation — 32× in this paper · explained in 2 episodes
• AGN — 4× in this paper · explained in 1 episode
• alpha — 4× in this paper · explained in 1 episode
• Accuracy — 2× in this paper · explained in 1 episode
• Robustness — 2× in this paper · explained in 5 episodes
• Anti-correlation — 1× in this paper · explained in 3 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Distribution Shift — 1× in this paper · explained in 6 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• National Research Foundation of Korea — 1× in this paper
• Star Formation Rate (SFR) — 1× in this paper · explained in 5 episodes

Sources

• The SPHEREx Sky Simulator: Science Data Modeling for the First All-Sky Near-Infrared Spectral Survey
• Emission-Line Diagnostics of Galaxy Evolution with NGST
• Evolution of H$\alpha$ Equivalent Widths from $z \sim 0.4-2.2$: implications for star formation and legacy surveys with Roman and Euclid
• On the universal validity of Case B recombination theory

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