Cake Talk by Ugne Dudzeviciute

Galaxy rotation curves provide fundamental measurements of the

baryonic and dark matter distributions in galaxies. Although kinematic

studies of galaxies in the local Universe have shown the need for dark

matter and its dominance over baryonic matter, there is less direct

evidence for this to be the case at higher redshift (z>1). Indeed, some

recent studies suggest that dark matter contribution may be much lower

in galaxies in the distant Universe. However, assessing dark matter

properties at high redshift is a complicated task due to observational

limitations, modelling assumptions and/or number statistics. To minimise

these uncertainties and assess the individual dark matter profiles in

galaxies at high redshift we have undertaken an ultra-deep KMOS study,

KURVS, of 43 main-sequence star-forming galaxies at z~1.5. Currently,

these are the deepest Halpha observations, and together with deep

HST/JWST imaging of the fields, allowed us to decompose the individual

rotation curves into the constituent baryonic and dark matter

components. In this talk, I will present the decomposition model and

discuss the first results from the survey, including their resolved

stellar mass profiles and the predicted dark matter contribution.