The Astronomical Journal· 2024Q1
The Early Data Release of the Dark Energy Spectroscopic Instrument
- 323citations
- Q1SCImago
- 2024year
Short summary
The Dark Energy Spectroscopic Instrument (DESI) has publicly released spectral data from its 5-month Survey Validation, including over 1.5 million objects across various astronomical samples.
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Key points
- DESI's initial data release comprises spectra from 1,597,366 objects.
- Data covers primary samples: Milky Way Survey (466,447), Bright Galaxy Survey (428,758), Luminous Red Galaxy sample (227,318), Emission Line Galaxy sample (437,664), and Quasar sample (76,079).
- An additional 137,148 objects from secondary programs are included.
- The release contains spectral data, derived properties, intermediate data products, and Large-Scale Structure science catalogs.
AI-generated from the title and abstract; the full text is not read.
Abstract
Abstract The Dark Energy Spectroscopic Instrument (DESI) completed its 5 month Survey Validation in 2021 May. Spectra of stellar and extragalactic targets from Survey Validation constitute the first major data sample from the DESI survey. This paper describes the public release of those spectra, the catalogs of derived properties, and the intermediate data products. In total, the public release includes good-quality spectral information from 466,447 objects targeted as part of the Milky Way Survey, 428,758 as part of the Bright Galaxy Survey, 227,318 as part of the Luminous Red Galaxy sample, 437,664 as part of the Emission Line Galaxy sample, and 76,079 as part of the Quasar sample. In addition, the release includes spectral information from 137,148 objects that expand the scope beyond the primary samples as part of a series of secondary programs. Here, we describe the spectral data, data quality, data products, Large-Scale Structure science catalogs, access to the data, and references that provide relevant background to using these spectra.
The authors' abstract, as published at the source. The Astronomical Journal, 2024 · DOI ↗
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Field: Instrumentation
InstrumentationPhysics and Astronomy