RCSED - A Value-Added Reference Catalog of Spectral Energy Distributions of 800,299 Galaxies in 11 Ultraviolet, Optical, and Near-Infrared Bands: Morphologies, Colors, Ionized Gas and Stellar Populations Properties

We present RCSED, the value-added Reference Catalog of Spectral Energy Distributions of galaxies, which contains homogenized spectrophotometric data for 800,299 low and intermediate redshift galaxies (0.007 &lt; z &lt; 0.6) selected from the Sloan Digital Sky Survey spectroscopic sample. Accessible from the Virtual Observatory (VO) and complemented with detailed information on galaxy properties obtained with the state-of-the-art data analysis, RCSED enables direct studies of galaxy formation and evolution during the last 5 Gyr. We provide tabulated color transformations for galaxies of different morphologies and luminosities and analytic expressions for the red sequence shape in different colors. RCSED comprises integrated k-corrected photometry in up-to 11 ultraviolet, optical, and near-infrared bands published by the GALEX, SDSS, and UKIDSS wide-field imaging surveys; results of the stellar population fitting of SDSS spectra including best-fitting templates, velocity dispersions, parameterized star formation histories, and stellar metallicities computed for instantaneous starburst and exponentially declining star formation models; parametric and non-parametric emission line fluxes and profiles; and gas phase metallicities. We link RCSED to the Galaxy Zoo morphological classification and galaxy bulge+disk decomposition results by Simard et al. We construct the color-magnitude, Faber-Jackson, mass-metallicity relations, compare them with the literature and discuss systematic errors of galaxy properties presented in our catalog. RCSED is accessible from the project web-site and via VO simple spectrum access and table access services using VO compliant applications. We describe several SQL query examples against the database. Finally, we briefly discuss existing and future scientific applications of RCSED and prospectives for the catalog extension to higher redshifts and different wavelengths.本研究发布RCSED——一款增值版星系光谱能量分布参考目录，其包含从斯隆数字巡天（Sloan Digital Sky Survey，SDSS）光谱样本中选取的800299个低红移与中等红移（0.007 < z < 0.6）星系的均一化分光光度数据。该目录可通过虚拟天文台（Virtual Observatory，VO）访问，且依托前沿数据分析方法获取了星系物理性质的详细补充信息，支持对近50亿年间星系形成与演化的直接研究。本目录提供了不同形态与光度星系的表格化颜色转换关系，以及不同波段下红序形态的解析表达式。RCSED涵盖由GALEX、SDSS与UKIDSS宽视场成像巡天发布的最多11个紫外、光学与近红外波段的积分k修正测光数据；包含SDSS光谱的恒星群体拟合结果，具体包括最优拟合模板、速度弥散、参数化恒星形成历史，以及针对瞬时星暴和指数衰减恒星形成模型计算得到的恒星金属丰度；还提供参数化与非参数化的发射线流量与轮廓，以及气相金属丰度。本研究将RCSED与星系动物园（Galaxy Zoo）的形态分类结果，以及Simard等人发布的星系核球+盘结构分解结果进行了关联。我们构建了颜色-星等关系、法贝尔-杰克逊关系（Faber-Jackson）与质量-金属丰度关系，将其与已有文献结果进行对比，并讨论了本目录中星系物理性质的系统误差。用户可通过本项目官方网站，或是借助兼容VO的应用程序调用VO简易光谱访问与表格访问服务获取RCSED数据集。本研究还提供了若干针对该数据库的SQL查询示例。最后，本文简要讨论了RCSED当前及未来的科学应用场景，并展望了将该目录扩展至更高红移与更多波段的发展前景。