A comprehensive study of star-forming regions in Haro 15 galaxy

FIRPO, V.; BOSCH, G.; HAGELE, G.; DIAZ, R. J.; DIAZ, A. I.; MORREL, N.

Buenos Aires

Conferencia; LAPIS 2012 Conference; 2012

Asociacion Argentina de Astronomia

We present a detailed study of the internal kinematics and the physical properties of the nebular material in four star-forming knots of the galaxy Haro 15. Using long-slit and echelle spectroscopy, we study the physical conditions, chemical abundances, reddening and ionization structure, from the global emission and for the different kinematical com- ponents. As the most intense star-forming regions have shown a peculiar kinematic behavior, we focus our study in their kinematic structure. Us- ing high quality Integral Field Unit (IFU) data from GMOS-South of the Gemini Telescopes, we have mapped the velocity fields and flux dis- tribution from fits to different emission lines. The observed kinematic structure in Haro15 has shown to be extremely complex, combining an evident rotation around a preferential axis with local deviations in around some star-forming areas.