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We analyze the star formation history (SFH) of galaxies as a function ofpresent-day environment, galaxy stellar mass and morphology. The SFH is derivedby means of a non-parametric spectrophotometric model applied to individualgalaxies at z ~ 0.04- 0.1 in the WINGS clusters and the PM2GC field. The fieldreconstructed evolution of the star formation rate density (SFRD) follows thevalues observed at each redshift (Madau & Dickinson 2014), except at z > 2where our estimate is ~ 1.7x higher than the high-z observed value. The slopeof the SFRD decline with time gets progressively steeper going from low mass tohigh mass haloes. The decrease of the SFRD since z = 2 is due to 1) quenching -50% of the SFRD in the field and 75% in clusters at z > 2 originated ingalaxies that are passive today - and 2) the fact that the average SFR oftoday's star-forming galaxies has decreased with time. We quantify thecontribution to the SFRD(z) of galaxies of today's different masses andmorphologies. The current morphology correlates with the current star formationactivity but is irrelevant for the past stellar history. The average SFHdepends on galaxy mass, but galaxies of a given mass have different historiesdepending on their environment. We conclude that the variation of the SFRD(z)with environment is not driven by different distributions of galaxy masses andmorphologies in clusters and field, and must be due to an accelerated formationin high mass haloes compared to low mass ones even for galaxies that will endup having the same galaxy mass today.

The star formation history of galaxies: the role of galaxy mass, morphology and environment