Central star formation in double-peak, gas-rich radio galaxies

In a recent work, large sample of double-peak (DP) emission line galaxies have been identified from the SDSS. While two peaks could represent kinematic components, they may be linked to bulges which their host tend have. Star-forming DP display central star formation enhancement and discussed compatible with sequence minor mergers. order probe merger induced mechanisms, we conducted observations molecular gas content 35 star-forming in upper part main (MS) IRAM 30m telescope. Including similar 0.3 dex above MS existing literature, finally obtain 52 such galaxies. We succeed fitting same parameters optical ionised lines for 10 (19%) find resulting most likely galaxy or interaction, is indicated by an excess extinction found centre. This traced radio continuum emissions at 150MHz, 1.4 3GHz, are all three linearly correlated log CO luminosity slope. The significantly larger amount depletion times, hence lower efficiency, than expected values distance MS. consistent scenario mergers increasing mass driving also exclude inwards directed migration origin bar morphology. Hence, these results that funnelled towards centre, triggering formation, but moderate efficiency.