Oral comunication
H. Miranda, C. Pappalardo, J. Afonso
Abstract
Studying extreme emission line galaxies (EELGs) is crucial, as they reflect a key phase that most galaxies undergo during their evolution and closely resemble the properties of galaxies in the young universe, providing valuable insights into galaxy formation and evolution. In this work, we present the preliminary results from a spectroscopic analysis of a growing sam- ple of EELGs at Cosmic Noon, identified in the DAWN JWST Archive. In our analysis we employ the population spectral synthesis (pss) code FADO, which self-consistently models both the optical stellar and nebular continuum, crucial for accurately interpreting the spectra of galaxies with significant contribution of the nebular emission to the total observed emis- sion. Importantly, as virtue of being a pss code, FADO does not require a predefined star formation or chemical enrichment history, allowing it to capture the bursty nature of these systems without imposing priors. Through a uniform analysis of this spectroscopic sample, we aim to characterize the physical and evolutionary properties of EELGs at Cosmic Noon. The preliminary results indicate that EELGS are typically young, low-mass and metal-poor systems. Moreover, their star formation histories are dominated by recent intense bursts, consistent with the observed high equivalent widths of [OIII] λ 5007 and Hα. These find- ings emphasise the importance of detailed modelling to better understand the nature and evolution of these galaxies.
XXXV Encontro Nacional de Astronomia e Astrofísica
Lisbon, Portugal
2025 September
