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arXiv · 2505.15881

The Lyman-alpha Halos of Galaxies at z=2-3 in the Keck Baryonic Structure Survey

Ryan F. Trainor·Noah R. Lamb·Charles C. Steidel·Yuguang Chen·Dawn K. Erb·Elizabeth Trenholm·Rebecca L. McClain·Io Kovach
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Abstract

We present the large-scale spatial Lya profiles of galaxies from the Keck Baryonic Structure Survey (KBSS) at 2 50 kpc, theta > 6''). We find that the scale length of the Lya halo is not strongly dependent on the properties of the central galaxy, including its net continuum luminosity or EW_Lya, although we find a possible weak tendency of continuum-faint, high-EW_Lya galaxies to exhibit larger Lya halos in contrast with previous work.

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Ryan F. Trainor, Noah R. Lamb, Charles C. Steidel, Yuguang Chen, Dawn K. Erb, Elizabeth Trenholm, Rebecca L. McClain, Io Kovach. 2025-05-21. The Lyman-alpha Halos of Galaxies at z=2-3 in the Keck Baryonic Structure Survey. https://arxiv.org/abs/2505.15881

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