Luminous clusters of Wolf-Rayet stars in the SBmIII galaxy NGC 4214

Astronomy and Astrophysics – Astronomy

Scientific paper

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Emission Spectra, Irregular Galaxies, Star Clusters, Stellar Luminosity, Wolf-Rayet Stars, Magellanic Clouds, Spectral Line Width, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

Observations are reported of strong broad emission lines attributed to WR stars in the spectra of several bright knots in the nearby Magellanic irregular galaxy NGC 4214 (classified as type SBmIII), in addition to the emission produced by the more prevalent WN stars). Data are presented on measurements of the line fluxes, the line equivalent widths, and continuum flux densities in the four observed knots, showing that the strongest WR lines generally appear in knots having the most luminous stellar continuum. The significance of this observation is discussed.

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