Inclination Dependence of Lyman-Alpha Properties in a Turbulent Disk Galaxy

Abstract

We present simulations of Lyman-Alpha radiation transfer in an isolated disk galaxy with a turbulence sub-grid model, multi-phase interstellar medium and detailed star formation modelling. We investigate the influence of inclination on the observed Lyman-Alpha properties for different snapshots. The Lyman-alpha spectrum, equivalent width distribution and escape fractions vary significantly with the detailed morphology of the disk, leading to variations from one snapshot to another. In particular, we find that supernova-driven cavities near star-forming regions in the simulation can dominate the transmitted Lyman-alpha fraction, suggesting a variability of LAEs on the timescales of the star formation activity.

accepted for publication, 9 pages

References in corpus (6)

• 3D Lyman-alpha radiation transfer. I. Understanding Lyman-alpha line profile morphologies
• Lyman Alpha Emitting Galaxies as a Probe of Reionization
• Lyman alpha Radiative Transfer in Cosmological Simulations using Adaptive Mesh Refinement
• Beamed Lyman Alpha Emission through Outflow-Driven Cavities
• Directional Lya equivalent boosting I. Spherically symmetric distributions of clumps
• Large-eddy simulations of isolated disc galaxies with thermal and turbulent feedback

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