CRIRES+ L/M-band spectral archive

CRIRES+ L/M波段光谱数据集是由欧洲南方天文台（ESO）的甚大望远镜（VLT）升级版高分辨率红外光谱仪CRIRES+采集的，覆盖2.8–5.5微米波长范围。数据集包含11,131帧原始观测数据，最终提取并校准了5,649对AB nodding光谱，涉及156个天体和68个观测项目。数据通过均匀重处理解决了L/M波段波长校准和狭缝倾斜问题，并利用大气吸收特征进行波长标定和校正。数据集通过交互式网页存档提供，支持数据下载和质量评估，主要应用于系外行星、恒星大气和星际介质等研究领域，旨在弥补L/M波段数据在ESO科学产品中的缺失。

The CRIRES+ L/M band spectral dataset was collected by the upgraded high-resolution infrared spectrograph CRIRES+ on the Very Large Telescope (VLT) of the European Southern Observatory (ESO), covering a wavelength range of 2.8–5.5 micrometers. The dataset contains 11,131 raw observational frames, from which 5,649 pairs of AB-nodding spectra were ultimately extracted and calibrated, involving 156 celestial targets and 68 observing programs. Uniform reprocessing was conducted on the data to address the issues of wavelength calibration and slit tilt in the L/M bands, and wavelength calibration and correction were performed using atmospheric absorption features. The dataset is provided via an interactive web archive, supporting data download and quality assessment. It is primarily used in research fields including exoplanets, stellar atmospheres and the interstellar medium, and aims to fill the gap of L/M band data in ESO's scientific products.