Starship Asterisk*

thanks for your replies.


I find all of this interesting.

Duh. I was [url=http://astron.berkeley.edu/~stars/bdwarfs/structbd.html]one click away[/url] from my answer. :oops:

[+] Q. about brown dwarfs. In [url=http://astron.berkeley.edu/~stars/bdwarfs/]article[/url] referenced at APOD, [quote="author"]Brown dwarfs lack sufficient mass (about 80 Jupiters)... Giant planets (such as Jupiter) may be much less massive than brown dwarfs, but are about the same diameter [/quote]

It follows that the density of such a star is more than that of a giant planet. That is, if Jupiter would became 80 times as heavy as it is, it would "collapse" until the temperature would reach 900K. So, in both cases gas pressure is a thing that defines radius and temperature... then what's a difference between such a gas planet and a star? I suppose, it would be solid core - does Jupiter have one? If no, it is star, not planet... Right?

As it reads now, [quote]the [color=red]bright white [/color][color=green]brown dwarf [/color]2M1207b [/quote]

I marked related word duplets with color. There's no more "white" below quoted text. Also, above it, [quote="RJN"]The white object is surely a brown dwarf star.[/quote]

I suppose he have read your post and made corrections.

Today we were shown [quote]Quite possibly, however, the red object is the first direct image of a planet beyond our Solar System[/quote]


the description goes on to describe the "white dwarf" that this planet orbits.


BUT at look at the full res photo


http://antwrp.gsfc.nasa.gov/apod/image/0505/brownplanet_eso_big.jpg


describes it as Brown Dwarf 2M1207.



which is correct?


Thanks