(Cepheid variables, named after Delta Cephei in Cepheus constellation, are
very luminous stars that have a direct relationship between their luminosity and pulsation period, which makes these stars important standard candles for establishing distance scales.)
Not exact matches
If SDSS1133 isn't a black hole, then it must have been a
very unusual type of
star known as a
Luminous Blue Variable (LBV).
This condition is produced by the strong ultraviolet light emitted from the
very luminous, hot
stars embedded in the gas.
With
luminous stars of this type there need not be
very many to make up a highly
luminous and conspicuous grouping.
B - type
stars are
very luminous and blue.
O - type
stars are
very hot and extremely
luminous, with most of their radiated output in the ultraviolet range.
As a
star - auteur, he has always been the most important feature and effect of the series, although it's telling that Mr. De Palma oversaw the set - piece that gave the movies their foundational image: Mr. Cruise's operative, Ethan Hunt, hovering like a spider (or a puppet) above a
luminous white floor while suspended by a
very thin rope.