Type: Poster
Session: Posters (Monday & Tuesday)
Author: Vicente Puga

Abstract: A list of known central galaxies from the OuterRim simulation are used to identify galaxy clusters in Rubin’ Data Preview 0 (DP0), a collection of simulated images and object catalogs. The Red Sequence method is used to red collect galaxies near to the central galaxy, which is also identified as the Brightest Cluster Galaxy (BCG). A correlation between the y-value at r=21 on a color (r-i)-magnitude (r) diagram and the known median redshift of the member galaxies from the truth tables is found. Given this relationship, it may be possible to estimate the redshift of galaxies, given only their red sequence intercept. The goal for this summer’s work is to have the Red Sequence code generate a list of the positional values and input redshifts for the cluster member galaxies and BCGs. Subsequently, those galaxies will be analyzed by DenseBasis which is a stellar population code that generates star formation rate and star formation history.  This process should help us begin to analyze commissioning data without the need for excessive spectroscopic redshifts.