Photometric and Kinematic Characterization of Tidal Dwarf Galaxy candidates

TL;DR

This study aims to identify and analyze Tidal Dwarf Galaxy candidates in merging (U)LIRGs using high-resolution imaging and spectroscopy to understand their formation, evolution, and physical properties.

Contribution

It introduces a methodology combining HST imaging and optical spectroscopy to characterize TDG candidates in (U)LIRGs, focusing on their photometric, kinematic, and dynamical properties.

Findings

Preliminary photometric results for IRAS 0857+3915.

Methodology for estimating age and mass of TDG candidates.

Framework for studying TDG formation in merging galaxies.

Abstract

Tidal Dwarf Galaxies (TDG), or self-graviting objects created from the tidal forces in interacting galaxies, have been found in several merging systems. This work will focus on identifying TDG candidates among a sample of Luminous and Ultraluminous Infrared Galaxies (U)LIRGs, where these interactions are occurring, in order to study their formation and evolution. High angular resolution imaging from Hubble Space Telescope (HST) in B, I and H band will be used to detect these sources. Photometric measurements of these regions compared to Stellar Synthesis Population models will allow us to roughly estimate the age and the mass. Complementary optical Integral Field spectroscopy we will be able to explore the physical, kinematic and dynamical properties in TDGs. We present preliminary photometric results for IRAS 0857+3915, as an example of the study that will be held for the entire sample of (U)LIRGs.