DESI: Early Data Release and project update

ORAL

Abstract

The Dark Energy Spectroscopic Instrument (DESI) is an on-going Stage IV experiment, which will map the Universe up to z=3.5 with 40 million redshift measurements. I will present the content of the Early Data Release (EDR), the current status of the instrument and of the Main Survey. The EDR contains more than one million redshifts taken from Dec. 2020 to May 2021., which have been used to finalize and validate the Main Survey design. The Main Survey started in May 2021, and has already gathered more than 20 million redshifts. I will present the various performed data-quality assessments, which ensures that the provided redshifts can be used for the DESI science.

*This research is supported by the Director, Office of Science, Office of High Energy Physics of the U.S. Department of Energy under Contract No. DE–AC02–05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract; additional support for DESI is provided by the U.S. National Science Foundation, Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF’s National Optical-Infrared Astronomy Research Laboratory; the Science and Technologies Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising-Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Science and Technology of Mexico (CONACYT); the Ministry of Science and Innovation of Spain (MICINN), and by the DESI Member Institutions: ?https://www.desi.lbl.gov/collaborating-institutions.The authors are honored to be permitted to conduct scientific research on Iolkam Du’ag (Kitt Peak), a mountain with particular significance to the Tohono O’odham Nation.

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Presenters

  • Anand Raichoor

    • Lawrence Berkeley National Laboratory

Authors

  • Anand Raichoor

    • Lawrence Berkeley National Laboratory