Rubin

Constraining the Small-Scale Structure of the Cool Disk-Halo Interface and CGM
Constraints on the sizes of cool structures in the CGM are challenging to obtain, and yet are critical to developing our understanding of the hydrodynamical processes regulating its survival. I will discuss CloudFlex, an open-source tool that predicts the absorption-line signatures of cool diffuse material with complex small-scale structure. Comparison of these predictions to multi-sightline observations of foreground gas permits novel constraints on, e.g., the mass distribution and spatial correlation of cool cloudlets. I will then describe a few applications of this tool, including (1) comparison to spectroscopy of numerous closely-spaced halo stars that probe the Milky Way's disk-halo interface on sub-kpc scales, and (2) combining predictions from CloudFlex with halo-scale cosmological zoom simulations to enable comparison to lensed background QSO/galaxy absorption-line datasets.

Constraining the Small-Scale Structure of the Cool Disk-Halo Interface and CGM

Constraints on the sizes of cool structures in the CGM are challenging to obtain, and yet are critical to developing our understanding of the hydrodynamical processes regulating its survival. I will discuss CloudFlex, an open-source tool that predicts the absorption-line signatures of cool diffuse material with complex small-scale structure. Comparison of these predictions to multi-sightline observations of foreground gas permits novel constraints on, e.g., the mass distribution and spatial correlation of cool cloudlets. I will then describe a few applications of this tool, including (1) comparison to spectroscopy of numerous closely-spaced halo stars that probe the Milky Way's disk-halo interface on sub-kpc scales, and (2) combining predictions from CloudFlex with halo-scale cosmological zoom simulations to enable comparison to lensed background QSO/galaxy absorption-line datasets.

ESO — Reaching New Heights in Astronomy

Rubin

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