Determination of the Hubble constant from blue dwarf galaxies

In modern cosmology there is a problem of the “Hubble tension” – a discrepancy between independent estimates of the Hubble parameter $H_0$ from relic radiation and from local observations at the $\sim4\sigma$ level. Accumulation and refinement of observational data can help to solve this problem. This work is devoted to an independent determination of $H_0$ from an analysis of the distance scale of blue dwarf galaxies. For this purpose, 5605 objects with redshifts $z<$ 0.3 were selected from the SDSS DR17 catalogue. A value of $H_0$ = 68.98 $\pm$ 0.21 km/s/Mpc was obtained from the sample analysis, which is in good agreement with the results of other independent studies.