Zobrazeno 1 - 10
of 315
pro vyhledávání: '"Zehavi, Idit"'
Autor:
Contreras, Sergio, Zehavi, Idit
We use the TNG300 magneto-hydrodynamic simulation and mock catalogues built using subhalo abundance matching (SHAM) to study the origin of the redshift evolution of the halo occupation distribution (HOD). We analyse stellar-mass selected galaxy sampl
Externí odkaz:
http://arxiv.org/abs/2305.19628
Autor:
Tinker, Jeremy L., Brownstein, Joel R., Guo, Hong, Leauthaud, Alexie, Maraston, Claudia, Masters, Karen, Montero-Dorta, Antonio D., Thomas, Daniel, Tojeiro, Rita, Weiner, Benjamin, Zehavi, Idit, Olmstead, Matthew D.
We present measurements of the clustering of galaxies as a function of their stellar mass in the Baryon Oscillation Spectroscopic Survey. We compare the clustering of samples using 12 different methods for estimating stellar mass, isolating the metho
Externí odkaz:
http://hdl.handle.net/10150/624043
http://arizona.openrepository.com/arizona/handle/10150/624043
http://arizona.openrepository.com/arizona/handle/10150/624043
To a good approximation, on large cosmological scales the evolved two-point correlation function of biased tracers is related to the initial one by a convolution. For Gaussian initial conditions, the smearing kernel is Gaussian, so if the initial cor
Externí odkaz:
http://arxiv.org/abs/2110.03591
Publikováno v:
Phys. Rev. D 104, 063504 (2021)
Fitting half-integer generalized Laguerre functions to the evolved, real-space dark matter and halo correlation functions provides a simple way to reconstruct their initial shapes. We show that this methodology also works well in a wide variety of re
Externí odkaz:
http://arxiv.org/abs/2107.12537
Understanding the impact of halo properties beyond halo mass on the clustering of galaxies (namely galaxy assembly bias) remains a challenge for contemporary models of galaxy clustering. We explore the use of machine learning to predict the halo occu
Externí odkaz:
http://arxiv.org/abs/2107.01223
Autor:
Favole, Ginevra, Montero-Dorta, Antonio D., Artale, M. Celeste, Contreras, Sergio, Zehavi, Idit, Xu, Xiaoju
We use the IllustrisTNG100 hydrodynamical simulation to study the dependence of the galaxy two-point correlation function on a broad range of secondary subhalo and galactic properties. We construct galaxy mock catalogues adopting a standard sub-halo
Externí odkaz:
http://arxiv.org/abs/2101.10733
Publikováno v:
Phys. Rev. D 104, 043530 (2021)
The baryon acoustic oscillation feature can be used as a standard cosmological ruler. In practice, for sub-percent level accuracy on the distance scale, it must be standardized. The physical reason why is understood, so we use this to develop an algo
Externí odkaz:
http://arxiv.org/abs/2101.08376
Autor:
Jimenez, Esteban, Padilla, Nelson, Contreras, Sergio, Zehavi, Idit, Baugh, Carlton, Orsi, Alvaro
The next generation of spectroscopic surveys will target emission-line galaxies (ELGs) to produce constraints on cosmological parameters. We study the large scale structure traced by ELGs using a combination of a semi-analytical model of galaxy forma
Externí odkaz:
http://arxiv.org/abs/2010.08500
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2021, 502(3), 3242-3263
Understanding the galaxy-halo connection is fundamental for contemporary models of galaxy clustering. The extent to which the haloes' assembly history and environment impact galaxy clustering (a.k.a. galaxy assembly bias; GAB), remains a complex and
Externí odkaz:
http://arxiv.org/abs/2007.05545
Autor:
O'Dwyer, Márcio, Anselmi, Stefano, Starkman, Glenn D., Corasaniti, Pier-Stefano, Sheth, Ravi K., Zehavi, Idit
Publikováno v:
Phys. Rev. D 101, 083517 (2020)
The Baryon Acoustic Oscillations feature (BAO) imprinted in the clustering correlation function is known to furnish us cosmic distance determinations that are independent of the cosmological-background model and the primordial perturbation parameters
Externí odkaz:
http://arxiv.org/abs/1910.10698