Bridging Galaxy Dynamics and Baryon Efficiency of 40 EDGE-CALIFA galaxies

TL;DR

This study analyzes the dynamics and baryon efficiency of 40 EDGE-CALIFA galaxies by deriving their circular velocity curves and classifying them, revealing correlations with baryon efficiency and dark matter halo mass.

Contribution

It applies the Jeans Axisymmetric Multi-Gaussian Expansion method to classify galaxy dynamics and links these classifications to baryon efficiency and dark matter halo properties.

Findings

Different CVC types correspond to specific baryon efficiencies.

Sharp-peaked CVCs span a wide dark matter halo mass range.

CVC classifications relate to galaxy baryon and dark matter content.

Abstract

We apply the Jeans Axisymmetric Multi-Gaussian Expansion method to the stellar kinematic maps of 40 Sa-Sd EDGE-CALIFA galaxies and derive their circular velocity curves (CVCs). The CVCs are classified using the Dynamical Classification method developed in Kalinova et al. (2015) . We also calculate the observational baryon efficiency, OBE, where $M_*/M_b=M_*/(M_*+M_{HI}+M_{H_2})$ of the galaxies using their stellar mass, total neutral hydrogen mass and total molecular gas from CO luminosities. Slow-rising, Flat and Round-peaked CVC types correspond to specific OBEs, stellar and dark matter (DM) halo mass values, while the Sharp-peaked CVCs span in the whole DM halo mass range of $10^{11}-10^{14} M_{\odot}$.