ИСТИНА

Ten years ago, analyzing a variety of data available and published to date, we showed and argued, for the first time, that the formation of both young/intermediate-age massive star clusters populations in nearby dwarf star-forming galaxies and the populations of metal-rich globular clusters in spheroids occurs/occurred at virtually the same stage of the host galaxies' chemical evolution, around ~1/3 of the solar metallicity. It was achieved very early in (massive) spheroids and much later in dwarf star-forming galaxies, depending on their mass. In the present contribution, we develop this study and demonstrate supporting converging evidence that the highest specific star formation rate in the dwarf galaxies, with typical mass M ~ 10^{9.1} Msolar, is indeed now (recently) achieved at a metallicity close to 12 + log(O/H) ~ 8.20, i.e. 1/3 of the solar value. We are based on different data sets independently obtained and accumulated to date on large-scale starburst activity in large samples of star-forming dwarf galaxies, including data on GALEX/SDSS galaxies in the local Universe. We discuss the important implication of these findings for the nature of the large-scale starburst phenomenon ubiquitously occurring in the hosts.