S Doradus

S Doradus is a blue hypergiant star found in the large magellanic cloud. Its temperature can fall to lower than 7,000 degrees Kelvin in big eruptions. S Doradus can be more than a million times brighter than our Sun and 380 times larger in these eruptions.^[1]

S Doradus Media

This image shows N119 in detail. N119 is an "H II region" in the LMC.
Large Magellanic Cloud. NGC 1910 is labelled near the centre of the image, and S Doradus is clearly visible at full size. (Credit: Robert Gendler/ESO)
Light curve of S Doradus from 1987 to 2016, showing slow variations with a deep minimum in 2011
Light curve of S Doradus from 2012 to 2016, showing the microvariations superimposed on a slow rise from the deep 2011 minimum
The S Doradus Instability strip and outburst region in the H–R diagram, showing S Doradus at minimum and maximum under the assumption of constant luminosity
S Doradus properties at minimum and maximum according to different studies:*- van Genderen (2001), temperature at minimum derived from colour index*- Lamers (1995), properties derived from non-LTE model atmosphere*- Humphreys & Davidson (1994), temperature at minimum assumes constant luminosity

References

↑ Lamers, H. J. G. L. M. (15 February 1995). "Observations and Interpretation of Luminous Blue Variables". IAU Colloq. 155: Astrophysical Applications of Stellar Pulsation. 83: 176. Bibcode:1995ASPC...83..176L – via NASA ADS.

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[1] Lamers, H. J. G. L. M. (15 February 1995). "Observations and Interpretation of Luminous Blue Variables". IAU Colloq. 155: Astrophysical Applications of Stellar Pulsation. 83: 176. Bibcode:1995ASPC...83..176L – via NASA ADS.

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