The bending of the star-forming main sequence traces the cold- to hot-accretion transition mass over 0 &lt; <i>z</i> &lt; 4

We analyse measurements of the evolving stellar mass (M0) at which bending star-forming main sequence (MS) occurs over 01.4 (for propose a revision in agreement latest simulations). hence argue MS primarily due lessening cold-accretion causing reduction available cold gas galaxies supports predictions feeding theory. In particular, rapidly redshift z>1 confirming evidence for cold-streams scenario. picture, progressive fueling rather than its sudden suppression halos more massive Mshock/Mstream produces nearly constant star-formation rate masses larger M0, not their quenching, other physical processes are thus required. Compared knee M* function galaxies, significantly lower z<1.5, z>2, suggesting imprint deprivation on distribution galaxy happened early times (z>1.5-2). The typical inside become bulge-dominated evolves differently from idea bulge-formation distinct process phasing-out cold-accretion.