The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment
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DOI：
10.3847/1538-4365/aa9e8a
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发表时间：
2018-04-01
影响因子：
8.7
通讯作者：
Zou, Hu
中科院分区：
文献类型：
--
作者：
Abolfathi, Bela;Aguado, D. S.;Zou, Hu
第四代斯隆数字巡天（SDSS-IV）自2014年7月开始运行。本文描述了该阶段的第二次数据发布，以及 SDSS 的第 14 次数据发布（使本数据发布第 14 次或 DR14）。本次发布公开了SDSS-IV在其运行的前两年（2014年至2016年7月）获取的数据。与之前所有 SDSS 版本一样，DR14 是累积性的，包括自 2000 年第一阶段开始运行以来 SDSS 获取的所有数据的最新缩减和校准。DR14 的新功能是首次公开发布来自扩展重子振荡光谱巡天的数据；来自阿帕奇点天文台（APO）银河演化实验（APOGEE-2）第二阶段的第一批数据，包括来自称为“大炮”的创新数据驱动机器学习算法的恒星参数估计； APO (MaNGA) 巡天附近星系测绘数据立方体的数量几乎是上一版本的两倍（总共 N = 2812）。本文介绍了 SDSS-IV 调查中公开数据的位置和格式。我们提供了重要技术论文的参考资料，描述了如何获取这些数据（目标和观察细节）并进行处理以供科学使用。 SDSS 网站 (www.sdss.org) 已针对此版本进行更新，并提供数据下载链接以及数据使用教程和示例。 SDSS-IV 计划在 2020 年之前继续收集天文数据，随后是 SDSS-V。
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014-2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.