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We present an original study of the dwarf starburst galaxy NGC 4214. We usearchival optical and UV images obtained with WFPC2 and STIS on-board the HubbleSpace Telescope. We explain the process followed to obtain high-qualityphotometry and astrometry of the stellar and cluster populations of thisgalaxy. We describe the procedure used to transform magnitudes and colours intophysical parameters using spectral energy distributions. We analyze severalaspects of the astrophysics of NGC 4214: we briefly describe the stellarpopulations in its inner structure with emphasis in the determination of theratio of blue-to-red supergiants. We study the stellar extinction and we findit consistent with previous studies of the nebular extinction. The extinctionassociated to the stellar population is found to be rather low (E(B-V) < 0.1mag). We make a complete research of the initial mass function (IMF) of thestars with masses between 20 and 100 Mo using a photometric method. We findthat this dwarf galaxy has a steeper IMF than Salpeter. We analyze severalextended structures distributed throughout the central regions of NGC 4214. Weinfer their properties, such as age, mass, and extinction. Some of the clustersthat we study are likely to disappear because of "infant mortality". We discussthe interaction between massive stars and their environment. We argue that starformation in NGC 4214 could take place in several stages.

Study of the young stellar population of NGC 4214 using the Hubble Space Telescope