Detection of anisotropic galaxy assembly bias in BOSS DR12

@article{Obuljen2020DetectionOA,
  title={Detection of anisotropic galaxy assembly bias in BOSS DR12},
  author={A. Obuljen and W. Percival and Neal Dalal},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2020}
}
  • A. Obuljen, W. Percival, Neal Dalal
  • Published 2020
  • Physics
  • arXiv: Cosmology and Nongalactic Astrophysics
  • We present evidence of anisotropic galaxy assembly bias in the Baryon Oscillation Spectroscopic Survey Data Release 12 galaxy sample at a level exceeding $5\sigma$. We use measurements of the line-of-sight velocity dispersion $\sigma_\star$ and stellar mass $M_\star$ to perform a simple split into subsamples of galaxies. We show that the amplitude of the monopole and quadrupole moments of the power spectrum depend differently on $\sigma_\star$ and $M_\star$, allowing us to split the galaxy… CONTINUE READING
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