Galaxy morphology and its evolution over the cosmic epoch hold important clues for understanding the regulation of star formation (SF). However, studying the relationship between morphology and SF has been hindered by the availability of consistent data at different redshifts. Our sample, combining CANDELS (0.8 < z < 2.5) and the GALEX-SDSS-WISE Legacy Catalog (GSWLC; z ~ 0), has physical parameters derived using consistent SED fitting with flexible dust attenuation laws. We adopt visual classifications from Kartaltepe et al. 2015 and expand them to z ~ 0 using SDSS images matching the physical resolution of CANDELS rest-frame optical images and deep FUV GALEX images matching the physical resolution of the CANDELS rest-frame FUV images. Our main finding is that disks with SF clumps at z ~ 0 make a similar fraction (~15%) of star-forming galaxies as at z ~ 2. The clumpy disk contribution to the SF budget peaks at z ~ 1, rather than z ~ 2, suggesting that the principal epoch of disk assembly continues to lower redshifts. Star-forming spheroids ("blue nuggets"), though less centrally concentrated than quenched spheroids, contribute significantly (~15%) to the SF budget at z ~ 1-2, suggesting that compaction precedes quenching. Among green valley and quiescent galaxies, the pure spheroid fraction drops since z ~ 1, whereas spheroids with disks (S0-like) become dominant. Mergers at or nearing coalescence are enhanced in SFR relative to the main sequence at all redshifts by a factor of ~2, but contribute $\lesssim$5% to the SF budget, with their contribution remaining small above the main sequence.

中文翻译：

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CANDELS 遇见 GSWLC：自 z = 2 以来形态学与恒星形成之间关系的演变

星系形态及其在宇宙时期的演化为理解恒星形成（SF）的规律提供了重要线索。然而，研究形态和 SF 之间的关系受到了不同红移一致数据的可用性的阻碍。我们的样本结合了 CANDELS (0.8 < z < 2.5) 和 GALEX-SDSS-WISE Legacy Catalog (GSWLC; z ~ 0)，具有使用一致的 SED 拟合和灵活的灰尘衰减定律得出的物理参数。我们采用 Kartaltepe 等人的视觉分类。2015 并使用与 CANDELS 静止帧光学图像的物理分辨率匹配的 SDSS 图像和与 CANDELS 静止帧 FUV 图像的物理分辨率匹配的深 FUV GALEX 图像将它们扩展到 z ~ 0。我们的主要发现是，在 z ~ 0 处具有 SF 团块的圆盘构成了与 z ~ 2 处相似的恒星形成星系的比例（~15%）。团块盘对 SF 预算的贡献在 z ~ 1 处达到峰值，而不是 z ~ 2，表明磁盘组装的主要时代继续降低红移。恒星形成的球体（“蓝色金块”）虽然比淬火球体集中度低，但对 z ~ 1-2 处的 SF 预算贡献显着（~15%），表明压实先于淬火。在绿谷星系和静止星系中，纯球体比例从 z ~ 1 开始下降，而带有圆盘（类 S0）的球体占主导地位。相对于所有红移处的主序星，在或接近合并时的合并在 SFR 中增强了约 2 倍，但对 SF 预算贡献了 $\lesssim $5%，