The GALEX-SDSS-WISE Legacy Catalog ("GSWLC")

GSWLC is a catalog of physical properties for 700,000 galaxies with SDSS redshifts z < 0.3, using data from GALEX, SDSS, and WISE. The galaxy properties (stellar mass, dust attenuation, star formation rates) are obtained via UV/optical SED fitting using a Bayesian framework. The catalog contains galaxies within GALEX footprints regardless of a UV detection. Mid-IR star formation rates are derived from WISE 22 micron data.

GSWLC是一个包含70万个红移z<0.3的星系物理属性的目录，其数据源自星系演化探测器（GALEX）、斯隆数字巡天（SDSS）以及广域红外巡天探测器（WISE）。该目录中的星系物理属性（恒星质量、尘埃消光、恒星形成率）通过贝叶斯框架下的紫外/光学光谱能量分布（Spectral Energy Distribution，SED）拟合获得。本目录涵盖所有处于GALEX观测天区范围内的星系，无论其是否被紫外波段探测到。中红外波段的恒星形成率则基于WISE 22微米的数据推导得到。