重新点燃FUSE I：大质量椭圆星系中的恒星形成
Reigniting the FUSE I: Star Formation in Massive Elliptical Galaxies
- Space Telescope Science Institute（太空望远镜科学研究所）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本论文重新分析30个大质量椭圆星系的FUSE远紫外光谱，通过SED拟合构建恒星质量、金属丰度等约束目录，发现年轻恒星由星系周介质冷却气体或矮星系剥离气体供能，而非老年恒星循环气体。
AI中文摘要：
在本系列论文《重新点燃FUSE》的开篇之作中，我们介绍了对30个大质量椭圆星系进行全面且同质化重新分析的数据收集与处理、方法以及初步结果，这些星系均拥有由远紫外光谱探测器（FUSE）获得的档案远紫外（FUV）光谱。我们对这些光谱进行了SED拟合，使用了来自GALEX、SDSS、DES/DECaLS、2MASS和WISE的孔径匹配测光数据，并构建了一个关于其恒星质量、恒星形成历史、恒星和气体相金属丰度以及尘埃不透明度的高质量约束目录。作为该分析的一部分，我们还汇编了一套全面的现代恒星模板库，在FUV中具有高分辨率，并在较低分辨率下覆盖从90 Å到1000 μm的广阔范围，该模板库通过修改版的FSPS和Python FSPS提供。我们发现了强有力的证据表明，这些系统中最年轻的恒星并非由老年恒星族群中的循环气体形成，而是由从热的星系周介质/星系团内介质中冷却的气体，或从附近或并合的矮星系系统中剥离的冷气体所供能。本系列的后续论文将重新审视O VI λλ1032,1038 Å发射在冷却流问题中的背景。
英文摘要：
In this inaugural paper of our "Reigniting the FUSE" series, we present the data collection & reduction, methodology, and preliminary results for a comprehensive and homogeneous reanalysis of all 30 massive elliptical galaxies that have archival far-ultraviolet (FUV) spectra with the Far Ultraviolet Spectroscopic Explorer (FUSE). We perform SED fitting to these spectra, with aperture-matched photometry from GALEX, SDSS, DES/DECaLS, 2MASS, and WISE, and construct a catalogue of high quality constraints on their stellar masses, star formation histories, stellar and gas-phase metallicities, and dust opacities. As a part of this analysis, we have also compiled a comprehensive modern set of stellar template libraries, with high resolution in the FUV, and broad coverage from $90\,\mathring{\rm A}$ - $1000\,{\rm μm}$ at lower resolution, which is made available through modified versions of FSPS and Python FSPS. We find strong evidence to suggest that the youngest stars in these systems do not form out of recycled gas from the old stellar populations, but instead are fueled either by gas cooling out of the hot circumgalactic/intracluster medium, or cool gas stripped from nearby or merging dwarf systems. Future papers in this series will reexamine the O VI $λλ$1032,1038 $\mathring{\rm A}$ emission in the context of the cooling flow problem.
