The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
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DOI：
10.3847/1538-4365/acda98
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发表时间：
2023-01
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通讯作者：
Andr'es Almeida;S. Anderson;M. Argudo-Fern'andez;C. Badenes;K. Barger;J. Barrera-Ballesteros;C. Bende
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作者：
Andr'es Almeida;S. Anderson;M. Argudo-Fern'andez;C. Badenes;K. Barger;J. Barrera-Ballesteros;C. Bende
斯隆数字巡天（SDSS）的第十八次数据发布（DR 18）是SDSS-V的第一次数据发布，SDSS-V是第五代巡天。SDSS-V包括三个主要的科学计划或“映射器”：银河映射器（MWM），黑洞映射器（BHM）和本地体积映射器。该数据发布包含两个多目标光谱计划（MWM和BHM）的广泛目标信息，包括其众多科学目标的输入目录和选择功能。我们描述了目标数据库的生产及其校准和科学重点的组成部分。DR 18还包括eROSITA在其eFEDS字段中识别的25，000个新的SDSS光谱和X射线源的补充信息。我们对一些SDSS软件管道进行了更新，并预览了DR 19的预期更改。我们还描述了三个增值目录（VAC）的基础上的SDSS-IV数据，自DR 17以来已公布，和一个VAC的基础上的SDSS-V数据在eFEDS领域。
The eighteenth data release (DR18) of the Sloan Digital Sky Survey (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific programs or “Mappers”: the Milky Way Mapper (MWM), the Black Hole Mapper (BHM), and the Local Volume Mapper. This data release contains extensive targeting information for the two multiobject spectroscopy programs (MWM and BHM), including input catalogs and selection functions for their numerous scientific objectives. We describe the production of the targeting databases and their calibration and scientifically focused components. DR18 also includes ∼25,000 new SDSS spectra and supplemental information for X-ray sources identified by eROSITA in its eFEDS field. We present updates to some of the SDSS software pipelines and preview changes anticipated for DR19. We also describe three value-added catalogs (VACs) based on SDSS-IV data that have been published since DR17, and one VAC based on the SDSS-V data in the eFEDS field.