Measuring Redshift Efficiency in Roman's High Latitude Spectroscopy Survey
Explore how redshift measurement impacts cosmological studies with a focus on simulating continuum-based redshift measurements in the Roman High Latitude Spectroscopy Survey. This study delves into the importance of analyzing red, quiescent galaxies and the potential benefits of combining data from Rubin and Roman surveys. The methodology involves simulating Roman grism based on HLSS parameters and assessing redshift estimation for high-z red galaxies. Results show the redshift efficiency curve for different exposure times.
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Presentation Transcript
Simulating continuum-based redshift measurement in the Roman s High Latitude Spectroscopy Survey Zhiyuan Guo, Duke University
Red, quiescent galaxies is important for cosmology study DES 2X2pt anylsis using DES RedMaGiC sample KiDS DR4 clustering with LRGs When combine Rubin and Roman, we can potentially have a more complete sample of red galaxies. Goal: Quantify how well we can measure redshift for high-z red galaxies in Roman HLSS
Method: Simulate Roman grism based on HLSS reference survey parameters. Perform spectra extraction and redshift estimates on every red galaxies in the simulation. Guo et al. in prep
Results: Redshift efficiency curve Different number of exposures times Different exposures times Guo et al. in prep Guo et al. in prep
