LAMOST光谱巡天第十一次数据发布第〇版 第二批数据

LAMOST第十一次巡天数据发布第〇版第二季度释放了 2022年12月29日到2023年3月31日之间获取的光谱数据，包括低分辨率光谱和中分辨率光谱两部分。其中低分辨率观测了173个天区，中分辨率观测了203个天区。共释放低分辨率光谱数共计 196,792条，其中包括条187,946恒星、7,265条星系、1,581条类星体。还包括一个有128,821 颗AFGK恒星的光谱参数星表。另外，释放中分辨率合并光谱 725,062条，中分辨率单次曝光光谱 2,482,959条，还包括一个有143,915颗恒星的光谱参数星表。The second quarter of the 0th version of the 11th LAMOST Survey Data Release (DR11) releases spectral data collected between December 29, 2022 and March 31, 2023, which is divided into two parts: low-resolution spectra and medium-resolution spectra. For low-resolution spectroscopic observations, 173 sky fields were covered, while 203 sky fields were observed for medium-resolution spectroscopy. A total of 196,792 low-resolution spectra are released, including 187,946 stellar spectra, 7,265 galaxy spectra, and 1,581 quasar spectra. Additionally, a spectral parameter catalog containing 128,821 AFGK-type stars is also released. For medium-resolution data, 725,062 merged medium-resolution spectra and 2,482,959 single-exposure medium-resolution spectra are released. Moreover, a spectral parameter catalog encompassing 143,915 stars is provided.

搜集汇总

背景与挑战

背景概述

该数据集是LAMOST光谱巡天第十一次数据发布的第二批数据，覆盖2022年12月至2023年3月的观测，包含低分辨率和中分辨率光谱，总计释放超过196,000条低分辨率光谱和超过300万条中分辨率光谱，并附有恒星参数星表。数据量约145.39 GB，以在线有条件共享方式提供，适用于宇宙学、星系和恒星物质研究。