# Integral Field Spectroscopy of Green Peas (I): Disentangling disk-like, turbulence and strong outflow kinematics in SDSSJ083843.63+385350.5

## TL;DR

This study uses a new spatially resolved spectroscopic method to analyze complex emission line profiles in a Green Pea galaxy, revealing multiple kinematic components linked to rotation, outflow, and turbulence, and exploring their connection to star formation and LyC leakage.

## Contribution

It introduces a novel analysis technique for IFU data that accounts for multiple emission line components, enhancing understanding of galaxy kinematics and feedback processes.

## Key findings

- Identified three distinct kinematic features: rotation, outflow, turbulence.
- Linked large-scale outflows to LyC leakage in Green Pea galaxies.
- Derived an updated star formation rate for the studied galaxy.

## Abstract

Integral Field Spectroscopy (IFS) is well known for providing detailed insight of extended sources thanks to the possibility of handling space resolved spectroscopic information. Simple and straightforward analysis such as single line fitting yield interesting results, although it might miss a more complete picture in many cases. Violent star forming regions, such as starburst galaxies, display very complex emission line profiles due to multiple kinematic components superposed in the line of sight. We perform a spatially resolved kinematical study of a single Green Pea (GP) galaxy, SDSSJ083843.63+385350.5, using a new method for analyzing Integral Field Unit (IFU) observations of emission line spectra. The method considers the presence of multiple components in the emission-line profiles and makes use of a statistical indicator to determine the meaningful number of components to fit the observed profiles. We are able to identify three distinct kinematic features throughout the field and discuss their link with a rotating component, a strong outflow and a turbulent mixing layer. We also derive an updated star formation rate for \ourobj and discuss the link between the observed signatures of a large scale outflow and of the Lyman continuum (LyC) leakage detected in GP galaxies.