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 $M_{\ast }/M_b=M_{\ast }/(M_{\ast }+M_{HI}+M_{H_2})$ 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 $10^{11}-10^{14}{M}_{\odot }$.

2 pages, 1 figure, Proceedings IAU Symposium No. 315, 2015

References in corpus (2)

• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• Towards a new classification of galaxies: principal component analysis of CALIFA circular velocity curves