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The Colour & Brightness of Stars
by Peter Eyland
This is a talk that Peter has given to different groups, such as Amateur Astronomy groups & High School groups.
Please note - Peter had many animations in his talk. Some are repeated below eg HR Diagram animation etc. Some appear as static images (i.e. not moving).
Three animations explain how stars coalesce from their gases & ignite.
★This is the address (URL) of that wonderful animation in Omega Centauri that was shown, with the stars being re-ordered into the Hertzsprung-Russell diagram.
here is the link
http://www.spacetelescope.org/videos/heic1017b/
Hertzsprung-Russell diagram animation
In this video, the stars in globular cluster Omega Centauri are rearranged according to their intrinsic brightness (vertical axis) and their temperature (horizontal axis). The temperature of a star dictates its apparent colour, with cooler stars being red and hotter ones being blue. The majority of stars at any given time fall into a wide band known as the main sequence, which passes from the top left (hot, bright stars) to the bottom right (cool, dim stars). However this is just a snapshot in time - as stars evolve they do not stay fixed to one point on the diagram for the whole of their lives.
Credit NASA, ESA, J. Anderson and R. van der Marel (STScI)
The following animation shows Pulsars.
Now the animation of Black holes, and how they appear on the HR diagram.
The following was an animation of stars behaviour around the black hole.
The following was an animation of stars revolving around each other.
The following shows an animation of variable stars.
The following shows an animation of eclipsing binary with a planet.
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