Witness the formation of quiescent galaxies through galaxy mergers in the SDSS-IV/MaNGA survey
Lihwai Lin1*
1Astronomy and Astrophysics, Academia Sinica, Taipei, Taiwan
* presenting author:Lihwai Lin, email:lihwailin@asiaa.sinica.edu.tw
Galaxy mergers have been suggested to play an important role in driving the evolution of galaxies. However, how the star formation is triggered and quenched during mergers remains unclear. The SDSS-IV/MaNGA is an Integral Field Spectroscopic (IFS) survey to observe ~10,000 nearby galaxies, enabling the study of resolved properties of hundreds of interacting galaxies. In this talk, I will present a detailed case study of one particular merging system selected from the early MaNGA data. This system shows a remarkable H_alpha blob offset from the main galaxy by ~4-5 kpc, likely to be the ionized gas stripped from the main galaxy due to the tidal interaction. I will discuss its important implications in the build up of quiescent early-type galaxies.


Keywords: Galaxy mergers