evolved star

evolved star

A star, such as a giant or a white dwarf, that has passed the main-sequence stage of its evolution. See stellar evolution.
References in periodicals archive ?
An evolved star in the last major phase of life, π1Gruis is 350 times larger than the Sun and resembles what our Sun will become at the end of its life in five billion years.
To understand that, an international team of astronomers - from Belgium, Chile, France and the United Kingdom - studied L2 Puppis, an evolved star which is only 208 light-years from Earth.
Betelgeuse, an old and evolved star, is well on its way to going supernova.
As the more evolved star loses mass, its Roche lobe shrinks, increasing the overflow, until it becomes the less massive star.
Instantaneous mass change happens when an evolved star undergoes a supernova explosion.
But Chi Cygni is in the unusual spectral class S (ranging from S6 to S10 during its pulsation cycle), meaning that it's an old, highly evolved star with zirconium oxide in its spectrum.
One is called a "single-degenerate model," in which a binary star is made up of a degenerate, or dead star, called a white dwarf paired with a less evolved star.
This should help to understand how this type of evolved star produces and expels key ingredients for all known forms of life.
That's because R Monocerotis, an old, evolved star within the nebula, is blowing off its outer layers.
From studies of its light and radial-velocity curves, astronomers discovered that Algol's cooler and lower-mass secondary star is actually an evolved star, while its higher-mass primary star is still a normal, relatively unevolved main-sequence star like the Sun.
These findings rule out a luminous red giant or other highly evolved star for the companion.
Now known as supernovae, these events blast almost all of a fatally evolved star into a chaotic expanding cloud of stellar debris.