Anand Raichoor and Christophe Yeche
August 22, 2022
We are glad to announce the publication on arXiv on Friday, August 19, 2022 of eight papers from Year 1 Key Project 1 (Y1KP1). These papers describe:
- how the DESI Main Survey targets are selected, along with their photometric and main spectroscopic properties (MWS: Cooper et al. 2022, BGS: Hahn et al. 2022, LRG: Zhou et al. 2022, ELG: Raichoor et al. 2022; QSO: Chaussidon et al. 2022);
- the pipeline to process those targets for DESI observations (Myers et al. 2022);
- the building of redshift truth tables based on visual inspections (Lan et al. 2022, Alexander et al. 2022).
Targets are selected from the Legacy Survey DR9 photometric catalogs, which are derived from three optical imaging surveys in the grz-bands—primarily assembled for that exact purpose, completed with the near-infrared WISE and the Gaia data.
They summarize the long-term effort by many researchers from the DESI collaboration to design a key part of the DESI experiment. All the different algorithms were tested and optimized during the Survey Validation (SV). At the end of the first part of the SV, the team has provided a final version of the target selection for all the tracers. They were finally validated during the One-Percent Survey.
With this target selection work coming to an end, the effort is now focusing on participating in the preparation of the large-scale structure analysis of the first year of data.
A second batch of papers will be published on arXiv in the coming months, prior to the SV data release…so stay tuned!