Search for the brightest stars in galaxies outside the Local Group
  This paper shows a technique for searching for bright massive stars in
galaxies beyond the Local Group. To search for massive stars, we used the
results of stellar photometry of the Hubble Space Telescope images using the
DAOPHOT and DOLPHOT packages. The results of such searches are shown on the
example of the galaxies DDO68, M94 and NGC1672. In the galaxy DDO68 the LBV
star changes its brightness, and in M94 massive stars can be identified by the
excess in the H${\alpha}$ band. For the galaxy NGC1672, we measured the
distance for the first time by the TRGB method, which made it possible to
determine the luminosities of the brightest stars, likely hypergiants, in the
young star formation region. So far we have performed stellar photometry of HST
images of 320 northern sky galaxies located at a distance below 12Mpc. This
allowed us to identify 53 galaxies with probable hypergiants. Further
photometric and spectral observations of these galaxies are planned to search
for massive stars.
