The SAMI Galaxy Survey: Disk-halo interactions in radio-selected star-forming galaxies

S. K. Leslie, J. J. Bryant, I. -T. Ho, E. M. Sadler, A. M. Medling, B. Groves, L. J. Kewley, J. Bland-Hawthorn, S. M. Croom, O. I. Wong, S. Brough, E. Tescari, S. M. Sweet, R. Sharp, A. W. Green, A. R. López-Sánchez, J. T. Allen, L. M. R. Fogarty, M. Goodwin, J. S. Lawrence, I. S. Konstantopoulos, M. S. Owers, S. N. Richards

Published 2017-07-12Version 1

In this paper, we compare the radio emission at 1.4 GHz with optical outflow signatures of edge-on galaxies. We report observations of six edge-on star-forming galaxies in the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) Galaxy Survey with 1.4 GHz luminosities $> 1\times10^{21}$ W Hz$^{-1}$. Extended minor axis optical emission is detected with enhanced \nii/H$\alpha$ line ratios and velocity dispersions consistent with galactic winds in three of six galaxies. These galaxies may host outflows driven by a combination of thermal and cosmic ray processes. We find that galaxies with the strongest wind signatures have extended radio morphologies. Our results form a baseline for understanding the driving mechanisms of galactic winds.