Spatially Resolving Galaxy Environmental Quenching in the SAMI Galaxy Survey

• Main Authors: Wang, Di, None
• Format: Still Image
• Language: unknown
• Published: Zenodo 2019
• Subjects: Schaefer; sami
• Online Access: https://dx.doi.org/10.5281/zenodo.2635354; https://zenodo.org/record/2635354

In order to identify how spatially resolved star formation depends on environment, we use the unitless scale-radius ratio (r50,Hα/r50,cont) (building on earlier work of Schaefer et al. 2017). We will use this metric to investigate quenching across a much enlarged dynamic range of environment (from clusters to the field), and with the full SAMI Galaxy Survey sample. This unitless scale-radius ratio shows the ratio of ongoing star formation to previous (or quenched) star formation. We will show our results using different environment density (group mass, local density, projected phase-space) and as a function of galaxy mass. We will also combine our measurements with other star formation rate indicators from the GAMA Survey (e.g. UV, far infrared) to place better contraints on the timescale of quenching in our galaxies.