LSST-DESC
Date:
As a member of LSST-DESC I attended the collaboration meeting held at the University of Arizona in Tucson, Arizona at the end of January 2020. The meeting was an occasion for all members to update on ongoing work related to science that is directly related to operations of the Vera C. Rubin Telescope or of general interest to the science goals.
In the clusters break out session I presented some highlights from my recently published works (https://arxiv.org/pdf/1910.07664.pdf and https://arxiv.org/pdf/1912.04414.pdf). I also briefly discussed my ongoing work, a continuation of https://arxiv.org/pdf/1910.07664.pdf, to use cluster observables to inform on the bias in weak lensing measurements due to the orientation of the cluster dark matter halo. Large area surveys with thousands of galaxy clusters will provide the necessary statistical power for a clearer view on the relation between the brightest cluster galaxy and the halo.
In the photometric redshift break out session I presented some results on my ongoing project of using prism observations to generate low resolution spectra for thousands of galaxies simultaneously. This work aims to provide reliable redshift estimates in galaxy clusters. Galaxy clusters are very different environments than the fields generally used for redshift calibration, and it could be possible that calibrations from COSMOS introduce small errors in cluster weak lensing studies. The low resolution spectra could provide a cheap way to generate redshift calibration fields for galaxy cluster studies.