Lyman α absorption beyond the disc of simulated spiral galaxies
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Abstract
We present an analysis of the origin and properties of the circumgalactic medium (CGM) in a suite of 11 cosmological zoom simulations resembling present-day spiral galaxies. On average the galaxies retain about 50 per cent of the cosmic fraction in baryons, almost equally divided into disc (interstellar medium) gas, cool CGM gas and warm-hot CGM gas. At radii smaller than 50 kpc the CGM is dominated by recycled warm-hot gas injected from the central galaxy, while at larger radii it is dominated by cool gas accreted on to the halo.
Description
Keywords
Line: profiles, Circumstellar matter, Galaxy: formation, Quasars: absorption lines
Citation
Dave´, R. et al. (2020). Lyman α absorption beyond the disc of simulated spiral galaxies. Monthly Notices of the Royal Astronomical Society, 496(1), 152–168