Low Resolution Stellar Library (LowLib)

"Stellar libraries" are collections of stellar spectra. Such libraries find use in population synthesis studies, stellar parameter estimation, exposure time calculators, mission planning, and education. This HLSP contains 513 stellar spectra in FITS files. The spectra are flux calibrated, dereddened, and shifted to zero velocity. Observed with three low resolution gratings from the HST Space Telescope Imaging Spectrograph(STIS) and then merged into one continuous spectrum, these spectra cover roughly 0.2 < λ < 1 μm at λ/Δλ about 1000. This "HST Low Resolution Stellar Library" extends and supersedes NGSL, the "Next Generation Stellar Library," and comes as a companion to the Hot Star Library (Khan & Worthey 2018, A&A, 615, 115).

恒星光谱库（Stellar libraries）是恒星光谱的集合体。此类光谱库可应用于恒星族群合成研究、恒星参数估算、曝光时间计算、任务规划以及科学教育等多个领域。本哈勃低分辨率恒星光谱库（HST Low Resolution Stellar Library，简称HLSP）包含513条存储于FITS格式文件中的恒星光谱。所有光谱均经过流量定标、消红化处理，并已校正至零视向速度。该批光谱由哈勃空间望远镜（HST）的空间望远镜成像摄谱仪（STIS）搭载三台低分辨率光栅观测获取，后经合并为单条连续光谱，其波长覆盖范围约为0.2 < λ < 1 μm，光谱分辨率λ/Δλ约为1000。本库拓展并替代了下一代恒星光谱库（Next Generation Stellar Library，简称NGSL），同时作为热星光谱库（Hot Star Library）的配套数据集发布，相关参考文献为Khan & Worthey 2018, 《天文学与天体物理学》(A&A), 615, 115。

搜集汇总

背景与挑战

背景概述

Low Resolution Stellar Library (LowLib)是一个包含513个恒星光谱的集合，数据来自哈勃太空望远镜成像摄谱仪（STIS）的低分辨率观测，覆盖波长0.2-1微米，分辨率约1000。这些光谱经过通量校准、去红移和速度归零处理，适用于恒星合成研究、参数估计和教育用途，是Next Generation Stellar Library的扩展和替代。