The connections among morphology, environment, and star formation with Galaxy Zoo Hubble

ABSTRACT Morphology is an important implication for studying the formation and evolution of galaxies. Previous studies have investigated the effects of spiral arms on star formation activities, but it is not clear how clumpy structure affects this process. In this work, we combine Galaxy Zoo Hubble project and 3D-HST/Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey programs to study the influence of morphological structure on star formation processes and the relationship between morphology and the environment at $0 \lt z \lt 1.0$. We find that galaxies with spiral arms and clumpy structures have higher star formation rates than smooth galaxies, and as the redshift decreases, this result remains unchanged. Analysis based on the subsamples, We find that stellar mass is related to the number of arms but not to the number of clumps. In addition, we do not find that an increase in the numbers of arms and/or clumps stimulates greater star formation. We also find that less-clump galaxies preferentially inhabit high-density environments, while more-clump galaxies preferentially inhabit low-density environments. This phenomenon is not significant in spiral galaxies. Our results show that environmental effects may have a greater influence on clumpy structures compared to spiral arm structures, which in turn affects the star formation activities of galaxies.