Joint galaxy–galaxy lensing and clustering constraints on galaxy formation
Name
2007.01889.pdf
Description
Accepted version
Size
2.64 MB
Format
Adobe PDF
Checksum (MD5)
d8e1630ab2167f7b1d24b1a1f728306f
Author(s)
Renneby, Malin
Henriques, Bruno MB
Hilbert, Stefan
Nelson, Dylan
Vogelsberger, Mark
Angulo, Raúl E
Springel, Volker
Hernquist, Lars
Date Issued
2020
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)
Citation
Renneby, Malin, Henriques, Bruno MB, Hilbert, Stefan, Nelson, Dylan, Vogelsberger, Mark et al. 2020. "Joint galaxy–galaxy lensing and clustering constraints on galaxy formation." Monthly Notices of the Royal Astronomical Society, 498 (4).
Version
Author's final manuscript
Abstract
© 2020 The Author(s) We compare predictions for galaxy-galaxy lensing profiles and clustering from the Henriques et al. public version of the Munich semi-analytical model (SAM) of galaxy formation and the IllustrisTNG suite, primarily TNG300, with observations from KiDS + GAMA and SDSS-DR7 using four different selection functions for the lenses (stellar mass, stellar mass and group membership, stellar mass and isolation criteria, and stellar mass and colour). We find that this version of the SAM does not agree well with the current data for stellar mass-only lenses with M∗ > 1011 M. By decreasing the merger time for satellite galaxies as well as reducing the radio-mode active galactic nucleus accretion efficiency in the SAM, we obtain better agreement, both for the lensing and the clustering, at the high-mass end. We show that the new model is consistent with the signals for central galaxies presented in Velliscig et al. Turning to the hydrodynamical simulation, TNG300 produces good lensing predictions, both for stellar mass-only (χ2 = 1.81 compared to χ2 = 7.79 for the SAM) and locally brightest galaxy samples (χ2 = 3.80 compared to χ2 = 5.01). With added dust corrections to the colours it matches the SDSS clustering signal well for red low-mass galaxies. We find that both the SAMs and TNG300 predict ∼ 50 per cent excessive lensing signals for intermediate-mass red galaxies with 10.2 < log10M∗[M] < 11.2 at r ≈ 0.6 h−1 Mpc, which require further theoretical development.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
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Attribution-NonCommercial-ShareAlike 4.0 International
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DOI of Published Version
https://doi.org/10.1093/MNRAS/STAA2675
