Spatially resolved properties for extremely metal-poor star-forming galaxies with Wolf-Rayet features and high-ionization lines

Abstract

Extremely metal-poor, high-ionizing starbursts in the local Universe provide unique laboratories for exploring in detail the physics of high-redshift systems. Also, their ongoing star-formation and haphazard morphology make them outstanding proxies for primordial galaxies. Using integral field spectroscopy, we spatially resolved the ISM properties and massive stars of two first-class low metallicity galaxies with Wolf-Rayet features and nebular HeII emission: Mrk178 and IZw18. In this review, we summarize our main results for these two objects.

Invited review in workshop "Chemical Abundances in Gaseous Nebulae" held at Campos do Jordao (SP,Brazil) from 2th to 5th of november 2016. To be published in AAA Workshop Series 12. 10 pages, 7 figures