SDWFS1433+35 - coldest planet?

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SDWFS1433+35 - coldest planet?

Post by Borislav on 12th April 2010, 4:33 am

http://arxiv.org/pdf/1004.1436

temperature of 400 Kelvin

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Re: SDWFS1433+35 - coldest planet?

Post by Borislav on 12th April 2010, 4:40 am

http://archive.stsci.edu/proposal_search.php?id=12044&mission=hst
http://www.stsci.edu/observing/phase2-public/12044.pro

the object is observed HST, but the results still do not know

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Re: SDWFS1433+35 - coldest planet?

Post by Sirius_Alpha on 12th April 2010, 5:21 am

Probably not a planet, more likely a Y-dwarf.

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Re: SDWFS1433+35 - coldest planet?

Post by Borislav on 12th April 2010, 9:27 am

Sirius_Alpha wrote:Probably not a planet, more likely a Y-dwarf.
http://adsabs.harvard.edu/abs/2003ApJ...596..587B



From this model, it follows that an object at a temperature of 400 Kelvin is in the field of planetary masses (less than 13 Jupiter masses), even for very large age in a few billion years.

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Re: SDWFS1433+35 - coldest planet?

Post by Sirius_Alpha on 12th April 2010, 9:52 am

I would guess we're getting into the hazy area between what differentiates a rogue planet from a brown dwarf.

This object probably didn't form by core accretion, if we choose to use that as the discriminate.

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Re: SDWFS1433+35 - coldest planet?

Post by Borislav on 12th April 2010, 9:57 am

may border on a 400-500 Kelvin, which must be a cloud of water vapor. Ie an easy life?

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Re: SDWFS1433+35 - coldest planet?

Post by Sirius_Alpha on 12th April 2010, 12:16 pm

Borislav wrote:Ie an easy life?
Haha, you're eleven days late.

This is a rogue superjovian or brown dwarf. Vast majority of it is hydrogen and helium. Just like with all the other brown dwarfs and gas giants out there, it is very improbable that life can exist there.

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Re: SDWFS1433+35 - coldest planet?

Post by Lazarus on 12th April 2010, 2:00 pm

In any case we have much colder planets in our own solar system.
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