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Intrinsic alignments of galaxies in the Horizon-AGN cosmological hydrodynamical simulation

Abstract:

The intrinsic alignments of galaxies are recognised as a contaminant to weak gravitational lensing measurements. In this work, we study the alignment of galaxy shapes and spins at low redshift ($z\sim 0.5$) in Horizon-AGN, an adaptive-mesh-refinement hydrodynamical cosmological simulation box of 100 Mpc/h a side with AGN feedback implementation. We find that spheroidal galaxies in the simulation show a tendency to be aligned radially towards over-densities in the dark matter density field and...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1093/mnras/stv2154

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
Publisher:
Oxford University Press
Journal:
Monthly Notices of the Royal Astronomical Society More from this journal
Volume:
454
Issue:
3
Pages:
2736-2753
Publication date:
2015-10-14
Acceptance date:
2015-09-15
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Keywords:
Pubs id:
pubs:535319
UUID:
uuid:c9d2610c-23f9-440d-a1a1-9da4c6544106
Local pid:
pubs:535319
Source identifiers:
535319
Deposit date:
2017-02-28

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