Austrian Early Career Conference 2024

Contribution:
Talk

Authors:
Federica Mauro

Affiliations:
University of Vienna

Title:
Co-evolution of disk and bulge components in spiral galaxies since the cosmic noon

Abstract:
Over the past two decades, there have been quantitative investigations into the evolution of galaxies through measurements of physical properties. However, these studies have only derived global values of the characteristic properties of distant and faint galaxies, ignoring the fact that the two distinct but intertwined components of bulge and disk have very different star formation and chemical enrichment histories, which result in a different spectral energy distribution (SED) and mass-to-light (M/L) ratio. This PhD project aims to explore the growth of the two primary structural components of spiral galaxies, the disk and bulge, using innovative methods to shed light on the differential evolution of the main structures of disk galaxies up to 4 Gyr after the Big Bang. It will quantitatively investigate the influence of CMOD (Papaderos, Östlin & Breda 2023) on previous determinations of the Tully-Fischer relation (TFR) since z≈2 and develop semi-empirical prescriptions to overcome its impact. CMOD is the differential chromatic modulation due to different SFHs of co-existing galaxy components bulge and disk. The work will employ spatially-resolved analysis of the physical properties of the bulge and disk, utilizing MAGPI high-quality integral field spectroscopy (IFS) data for a representative survey of rotationally supported galaxies at z≈0.3. Population spectral synthesis codes (FADO and Starlight) will infer the spatially resolved star formation and the chemical enrichment history of the galaxy sample, focusing on the bulge-to-disk age contrast at z≈0.3. Additionally, this comprehensive treatment of CMOD effects would allow for a precise determination of M/L(z, filter), incorporating spatially resolved k-correction and ε evolutionary corrections from our simulations and compute the effects on the integral magnitude and colour considering an evolutionarily consistent context. Finally, the focus will shift to constructing kinematic scaling relations, like TFR, and comparing them with simulations.