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Conference object . 2018
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Conference object . 2018
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Stellar Kinematics In The Cosmic Web: Lessons From The Sami Survey And The Horizon-Agn Simulation

Authors: Welker, Charlotte;

Stellar Kinematics In The Cosmic Web: Lessons From The Sami Survey And The Horizon-Agn Simulation

Abstract

We reconstruct the 3D network of cosmic filaments on Mpc scales across GAMA fields and assign SAMI field galaxies to their nearest filament to estimate the degree of alignment between SAMI galaxies' kinematic axes and their nearest filament in projection. We present the first detection of differential galactic spin alignment trends with local cosmic filaments using IFS kinematics. Low-mass galaxies show a tendency to align their spin with their nearest filament while higher mass counterparts are more likely to display an orthogonal orientation. The stellar transition mass is confidently bracketed between 10^(10.1) Msun and 10^(10.7) Msun. In addition, we find that on average, v/sigma peaks at a physical distance d=2.4(+- 0.5) Mpc from the centre of the filaments. A similar trend is recovered in the Horizon-AGN simulation. We also find this trend to be consistent with the build-up of galaxies in rich vorticity quadrants dispatched around filaments identified in the Horizon-AGN simulation.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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