pulsating star


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pulsating star

n
(Astronomy) a type of variable star, the variation in brightness resulting from expansion and subsequent contraction of the star
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Red giant stars, on occasion, collide with their companion star and that could lead to removal of up to 90 percent of the red giant stars' mass.A How the star loses so much mass has yet to be explained but the new type of pulsating star discovered by the astronomers could offer up some new clues about stellar collisions.
As a pulsating star expands and contracts, its brightness and colour will change through the pulsation cycle.
V1 is a special class of pulsating star called a Cepheid variable that can be used to make reliable measurements of large cosmic distances.
If further work verifies that the birth of Geminga was indeed a holey event, it could shed new light on the nature of this pulsating star, as well as on the evolution of the interstellar medium surrounding the sun and its neighbors.
Long known as a pulsating star that dims and then brightens approximately every four days, Polaris now appears to be changing rapidly to one whose brightness remains constant.
Washington, Jan 19 (ANI): Scientists have discovered, for the first time, a delta Scuti pulsating star that hosts a hot giant transiting planet.
CW Leo is a red giant pulsating star in the constellation of Leo.
"We have essentially created an animation of a pulsating star using real images," stated Lacour.
In this new study, astronomers used Hubble to observe 70 pulsating stars called Cepheid variables in the Large Magellanic Cloud.
The pulsating stars have predictable rates of brightening and dimming, and this can be used to measure distances between galaxies.
Chinese and Australian astronomers created a 3D galactic map by measuring the distances of more than 1,300 large, pulsating stars which revealed that the Milky Way has an S-like warped appearance.
NGC 3972 also contains many pulsating stars called Cepheid variables.