luminous blue variable

(redirected from S Doradus variable)

luminous blue variable

[′lüm·ən·əs ¦blü ′ver·ē·ə·bəl]
(astronomy)
Any of a small group of high-luminosity, unstable, hot supergiant stars that have irregular eruptions or ejections with greatly enhanced mass outflow (10-5 to 10-4 solar mass per year).