Program: GN-2021B-Q-209

Title:Multi-wavelength view of galaxy assembly process on small scales
PI:Venu Kalari
Co-I(s): Smitha Subramanian, Chayan Mondal, Patrick Côté

Abstract

Theoretically, the galaxy assembly process is scale-free and expected to be proceeded over all mass ranges. The effect of interactions on the scales of dwarf galaxies is best studied in low-density environments where the effects of nearby massive galaxies are minimal. To understand galaxy interactions and associated star formation on smaller scales, we propose a deep optical imaging (g,r,i,z broad bands and Halpha narrow band) of 3 interacting system of dwarf galaxies, along with 2 isolated dwarfs as control sample, in the Lynx-Cancer Void region and request a total observing time of 11.5 hours. The main goals of this pilot study are to (i) identify stellar counterpart (low surface brightness tidal features) of HI bridge and morphology of companion galaxy in the case of interacting dwarf galaxies, (ii) combining the proposed observations with the FUV data and estimate star formation histories of these galaxies by performing a detailed Spectral Energy Distribution (SED) analysis and check for correlated star formation peaks in the pairs and (iii) identify recent star forming regions up to smaller scales, their spatial distribution and compare them in interacting and non-interacting systems. This study can provide valuable insights to our understanding of the hierarchical galaxy assembly process.