Luminous blue variables (LBVs) are rare, massive and evolved stars that show unpredictable and sometimes dramatic variations in their spectra and brightness...

giants Blue giants Bright giants Supergiants Red supergiant Hypergiants absolute magni- tude (MV) A blue supergiant (BSG) is a hot, luminous star, often...

Earth, it is a hypergiant luminous blue variable (LBV) star of spectral type B1-2 Ia-0ep that is one of the most luminous stars in the Milky Way. The...

these are small except for two distinct instability regions where luminous blue variables (LBVs) and yellow hypergiants are found. Because of their high...

lives in the blue giant stage. Because O-type and B-type stars with a giant luminosity classification are often somewhat more luminous than their normal...

class of variables is named after Beta Cephei. Classical Cepheids (or Delta Cephei variables) are population I (young, massive, and luminous) yellow supergiants...

roughly 160,000 light-years away. The star is a luminous blue variable, and one of the most luminous stars known, having a luminosity varying widely above...

The Pistol Star is an extremely luminous blue hypergiant star, one of the most luminous and massive known in the Milky Way. It is one of many massive...

used for blue supergiants which have a forest of forbidden FeII lines in their spectra. They are potentially quiescent hot luminous blue variables. Eta Carinae...

constellation Carina. It is classified as a luminous blue variable (LBV) and is one of the most luminous stars in the Milky Way. The great distance (20...