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30 Doradus has at its centre the star cluster NGC 2070 which includes the compact concentration of stars known as R136 [14] that produces most of the energy that makes the nebula visible. The estimated mass of the cluster is 450,000 solar masses , suggesting it will likely become a globular cluster in the future. [ 15 ]
A 1978 survey carried out by Jorge Melnick covered the 30 Doradus region and found six new Wolf–Rayet (WR) stars, all belonging to the WN sequence.The survey observed stars that were above [clarification needed] apparent magnitude 14 and within 2 arcminutes of the centre of the 30 Doradus nebula, and the star now known as BAT99‑98 was labelled as star J.
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NGC 2060 is often used synonymously for the supernova remnant N157B [2] (30 Doradus B [3]) which is a larger area of faint nebulosity and strong radio emission. The supernova occurred approximately 5000 years ago from our point of view.
Among the objects cataloged was RMC 136, (Radcliffe Observatory Magellanic Cloud Catalogue, Catalog number 136) the central "star" of 30 Doradus. Subsequent observations showed that R136 was located in the center of a giant H II region that was a center of intense star formation in the immediate vicinity of the observed stars. [8]
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Beta Doradus is a notably bright Cepheid variable star. It is a yellow-tinged supergiant star that has a minimum magnitude of 4.1 and a maximum magnitude of 3.5. One thousand and forty light-years from Earth, Beta Doradus has a period of 9 days and 20 hours. [1] R Doradus is one of the many variable stars in Dorado.