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 ?
It is also known to be a luminous blue variable, which is an evolved star that displays unpredictable variations when it comes to its brightness and spectra.
Betelgeuse, an old and evolved star, is well on its way to going supernova.
The discovery of pulsations-periodic brightness changes on the surface of a star that, in this case, keep a regular tune every 400-600 seconds-will allow astronomers an unprecedented opportunity to understand what makes up this highly evolved star's interior.
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.
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.
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. Over time, as the stars orbit each other, the white dwarf's gravity siphons gas from the atmosphere of its partner star until the white dwarf becomes so massive and dense that it ignites, triggering an immense thermonuclear explosion.
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.