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

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 ⊙ .