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An Empirical Approach to Cosmological Galaxy Survey Simulation: Application to SPHEREx Low-Resolution Spectroscopy

Stickley, Nathaniel R. and Capak, Peter and Masters, Daniel and de Putter, Roland and Doré, Olivier and Bock, Jamie (2016) An Empirical Approach to Cosmological Galaxy Survey Simulation: Application to SPHEREx Low-Resolution Spectroscopy. . (Unpublished)

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Highly accurate models of the galaxy population over cosmological volumes are necessary in order to predict the performance of upcoming cosmological missions. We present a data-driven model of the galaxy population constrained by deep 0.1-8 μm imaging and spectroscopic data in the COSMOS survey, with the immediate goal of simulating the spectroscopic redshift performance of the proposed SPHEREx mission. SPHEREx will obtain over the full-sky R∼41 spectrophotometry at moderate spatial resolution (∼6") over the wavelength range 0.75-4.18 μm and R∼135 over the wavelength range 4.18-5 μm. We show that our simulation accurately reproduces a range of known galaxy properties, encapsulating the full complexity of the galaxy population and enables realistic, full end-to-end simulations to predict mission performance. Finally, we discuss potential applications of the simulation framework to future cosmology missions and give a description of released data products.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Capak, Peter0000-0003-3578-6843
Masters, Daniel0000-0001-5382-6138
Doré, Olivier0000-0002-5009-7563
Bock, Jamie0000-0002-5710-5212
Additional Information:Part of the research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. RdP and OD acknowledge the generous support of the Heising-Simons Foundation.
Group:COSMOS, Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Heising-Simons FoundationUNSPECIFIED
Subject Keywords:techniques: photometric - techniques: spectroscopic - surveys - cosmology: cosmological parameters - cosmology: observations
Record Number:CaltechAUTHORS:20180911-163142346
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89537
Deposited By: George Porter
Deposited On:12 Sep 2018 14:27
Last Modified:03 Oct 2019 20:17

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