The SAMI Galaxy Survey: the difference between ionised gas and stellar velocity dispersions

Sree Oh, Matthew Colless, Francesco D'Eugenio +16

We investigate the mean locally-measured velocity dispersions of ionised gas (${\sigma }_{\mathrm{gas}}$) and stars (${\sigma }_{\ast }$) for 1090 galaxies with stellar masses $\log\,(M_*/M_{\odot}) \geq 9.5…