Speaker
Description
The study of the first galaxies which contributed to the ionization of the universe will become possible with an integral field and multi-object spectrograph like MOSAIC (significant contribution from GUAIX), set to be installed on the 39m Extremely Large Telescope (ELT), currently under construction. As a pilot study for that, a detailed two-dimensional study of the physical properties of a sample of low-mass (dwarf) star-forming galaxies at low redshift is being conducted. This project is part of the ITP Dwarfs4MOSAIC program (IP Jesus Gallego), which was selected through a competitive process in the spring of 2023 and extended in spring of 2024. We will present the first results from the reduction and analysis of high-spectral-resolution, two-dimensional integral field spectroscopy data obtained with MEGARA on the Gran Telescopio Canarias (GTC). The galaxies studied include SBS 0335-052 W, Mrk 1486, and J1105+4444, for which we have analyzed two-dimensional maps of physical properties, spatial structures, kinematic properties of ionized gas, and advancements in the data reduction process.
