Oph J1622-2405 B - Treated as planet

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Oph J1622-2405 B - Treated as planet

Post by Edasich on 22nd April 2011, 6:04 pm

http://exoplanet.eu/star.php?st=Oph+11

But revised mass (Luhman et al. 2007) should be 19 Jupiter masses (a planetary outlier by the way). Rolling Eyes

Nice before-Easter gift Laughing
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Re: Oph J1622-2405 B - Treated as planet

Post by Lazarus on 22nd April 2011, 6:40 pm

Looks like the quoted mass for the primary has dropped a zero.

Should be 0.0162 solar masses.
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Re: Oph J1622-2405 B - Treated as planet

Post by Dnoces on 22nd April 2011, 10:13 pm

Oops.
I think that we've definitely become a little lenient on the lower-bound for brown dwarfs. Has some major part of planetary formation theory changed, or has the only thing that's been changed a few scientist's opinions?
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Re: Oph J1622-2405 B - Treated as planet

Post by Sirius_Alpha on 23rd April 2011, 2:10 am

What do you mean? The error margin allows for Oph J1622-2405 b to be 9 MJ, which places it in the (almost arbitrary) < 13 MJ criteria we've been using for exoplanets.

Criteria for inclusion in the catalog
An additional difficulty comes from the uncertainty in the mass value (for instance an object with a mass 19 +/- 3 MJup could have a true mass value < 13 MJup with a 2 sigma statistical deviation (= 12% probability). We thus finally include planets with masses < 20 Jup up to 2 sigma

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Re: Oph J1622-2405 B - Treated as planet

Post by Edasich on 23rd April 2011, 4:45 am

Next to come is FU Tauri B then (=15 Mj) Smile
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Re: Oph J1622-2405 B - Treated as planet

Post by Sirius_Alpha on 23rd April 2011, 7:12 am

Maybe HN Peg instead? As well as Ross 458.

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Re: Oph J1622-2405 B - Treated as planet

Post by Edasich on 23rd April 2011, 2:22 pm

Sirius_Alpha wrote:Maybe HN Peg instead? As well as Ross 458.

Yes, also. Wink

Why not 11 Comae b too?
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Re: Oph J1622-2405 B - Treated as planet

Post by Lazarus on 24th April 2011, 2:52 pm

Sirius_Alpha wrote:Maybe HN Peg instead? As well as Ross 458.
Is it just me or is Ross 458 listed in both the confirmed and unconfirmed sections?

Once as Ross 458, once as Ross 458 (AB).
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Re: Oph J1622-2405 B - Treated as planet

Post by Sirius_Alpha on 24th April 2011, 6:29 pm

The EPE also has WASP-51 and HAT-P-30 as separate entries, as well. Question

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Re: Oph J1622-2405 B - Treated as planet

Post by Lazarus on 25th April 2011, 1:58 pm

To add to the fun, HAT-P-30b is in the transiting planets list, WASP-51b isn't...
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Re: Oph J1622-2405 B - Treated as planet

Post by Sirius_Alpha on 5th May 2011, 5:23 am

The Ross 458 paper.
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2011.18664.x/abstract

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Re: Oph J1622-2405 B - Treated as planet

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