Gas flows in the circum-galactic medium (Milky Way-mass)

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These animations, based on the cosmic baryon cycle analysis reported in Anglés-Alcázar et al. (2017a), illustrate gas flows that fuel star formation in galaxies (fresh accretion, wind recycling, intergalactic transfer, …). See the paper for descriptions of the different types of gas flows. Redshift labels redshift, dashed line the virial radius at each time, grey background is a map of projected gas density. Yellow stars show the center of mass of each galaxy/satellite. Smooth colors (blue-red) show the stellar density map. The green pints that appear show “intergalactic transfer,” when gas is blown out of one galaxy via stellar feedback, and then “stolen” by the neighbor galaxy and accreted onto it to form new stars (points shows randomly-sampled gas parcels). This is for a halo with Milky Way mass (1e12 solar mass halo) at present-day. Made by Daniel Angles-Alcazar, for https://arxiv.org/abs/1610.08523.

© Philip Hopkins 2015