Talk:CoRoT-3b

Density[edit]

Is there any known material that is twice as dense as platinum? Or are we dealing with 'degenerate matter'? This seems much the most interesting aspect of the new object.

I was under the impression that stars other than White Dwarves and Neturon Stars were not particularly dense overall. Is that wrong? --GwydionM (talk) 17:10, 7 October 2008 (UTC)[reply]

A good reference to start with here is this paper: while it only deals with "cold" planets, the general principles can be applied here, just bear in mind that real planets may have internal heat sources and also receive energy from their parent stars, so their actual radii will differ somewhat from the exact values given in the paper. The expected radii of gas giants/brown dwarfs more massive than Jupiter is expected to remain fairly constant (the extra mass is compensated for increasing degeneracy pressure in the planetary core - so yes, degeneracy is a factor here, though the planet is not fully degenerate): the radii of cold hydrogen planets peaks at roughly 1000 Earth masses (about 3 times Jupiter), but more massive planets retain more internal heat, which to some extent helps to offset the decrease. Basically, you take an object made of 21 Jupiter masses of hydrogen, and an object made of 1 Jupiter mass of hydrogen, the two would actually be roughly the same size. Icalanise (talk) 19:23, 7 October 2008 (UTC)[reply]

This is a brown dwarf. No doubt about it at 21 jupiter masses. —Preceding unsigned comment added by Matthurricane (talk • contribs) 05:27, 29 December 2009 (UTC)[reply]

Could this thing be artificial?[edit]

It is the same diameter as Jupiter, but 21 times more massive.

That means it is made of something like rock.

It has 56 G.

It orbits 5 miles out from its sun.

Either it is artificial, or it is one of the most bizarre natural objects ever discovered. — Preceding unsigned comment added by 153.2.246.32 (talk) 06:44, 17 April 2012 (UTC)[reply]

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