HII Galaxies in 3D
Abstract
In this contribution I review some results of the integral field spectroscopy of HII galaxies. The two main topics are related to their internal kinematics and the distribution of physical conditions. HII galaxies present a L-σ relation similar to elliptical galaxies. However, the origin of supersonic motions of the ionized gas (σ) is still a matter of debate. We show that the core of the star forming region dominates the internal kinematics and probes the underlying turbulent motions. The show our latest calibration of the L-sigma relation of local HII galaxies. We also show that the physical conditions are very uniform throughout the whole extent of the star forming region, once you account for the levels of ionization. HII galaxies are excellent laboratories for constraining the ionization power of high mass stars at low metallicities.
- Publication:
-
The Interplay between Local and Global Processes in Galaxies,
- Pub Date:
- June 2016
- Bibcode:
- 2016ilgp.confE..13T
- Keywords:
-
- galaxies: general;
- galaxies: structures