New Wolf-Rayet and extreme Of stars near the 30 Doradus nebula

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Magellanic Clouds, O Stars, Star Clusters, Wolf-Rayet Stars, Brightness Distribution, Charge Coupled Devices, Nebulae, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

The discovery of a new Wolf-Rayet and two extreme Of stars located on the western edge of the 30 Doradus complex in the Large Magellanic Cloud is reported. The Wolf-Rayet star has a WN 3 + OB spectral type whereas the two other objects are of Of/WN composite type. They were detected using CCD exposures through interference filters and confirmed by subsequent spectroscopic observations. The WN 3 star and one of the Of/WN objects are located in a tight stellar cluster in the OB association LH 90. The same cluster also contains Brey 65. The other Of/WN object is an isolated star in the OB association LH 99.

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