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Essay

The Twin Supergiants: Alpha and Beta Centauri

Essay specific features

 

Issue:

Science

 

Written by:

Fern W

 

Date added:

September 12, 2012

 

Level:

University

 

Grade:

A

 

No of pages / words:

3 / 571

 

Was viewed:

7954 times

 

Rating of current essay:

 
Essay content:

Sophisticated observations that rely on the interference properties of light show that the single point of light actually consists of a pair of nearly identical stars each some 55,000 times more luminous than the Sun separated (from our perspective) by only 2.5 astronomical units. The temperature and luminosity show each to contain 15 solar masses...
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The temperature and luminosity show each to contain 15 solar masses. Spectra suggest an orbital period of not quite a year, this and the masses rendering them an actual 3 astronomical units apart. Twin Hadar also has a fourth magnitude sibling 1.3 seconds of arc away that, because of the brightness difference, is difficult to see and study...
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