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View Full Version here: : 'Fried egg' star spotted in deep space


glenc
30-09-2011, 06:22 AM
Odd names aside, IRAS 17163-3907 is a genuine curiosity, the European Southern Observatory (ESO) said on Wednesday.
It is a monster of a star, with a diameter 1000 times bigger than the Sun and 500,000 times the brightness.
Read more: http://www.smh.com.au/technology/sci-tech/fried-egg-star-spotted-in-deep-space-20110929-1ky40.html#ixzz1ZNJIGcNG

Ric
30-09-2011, 12:50 PM
A very unusual star indeed.

TrevorW
01-10-2011, 08:43 AM
Would you like bacon with that :P;):D

renormalised
01-10-2011, 01:38 PM
Should be in the science forum.....

Yellow hypergiants are extremely rare because they are in what is known as the '"yellow void", which occurs for stars of this type in spectral classes F and G (mostly G). At the temps in these spectral classes, hypergiants become thermodynamically unstable and the stars either shrink to become LBV's/blue hypergiants or expand and cool to become red hypergiants (in rare cases). It's also characteristic for these stars (yellow hypergiants) not to exceed 500000 solar luminosities. A good esxample of one is Rho Cassiopeiae.