GJ 832 - Jupiter analogue and HZ super-Earth

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GJ 832b

Post by Lazarus on 2nd September 2008, 4:03 am

A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832

Interestingly the star appears to be metal-poor. It is one of the closest known exoplanetary systems to the Sun.
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Edasich on 2nd September 2008, 8:49 am

Finally a new planet!! Not listed at EP at the moment.

Lazarus wrote:A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832

Interestingly the star appears to be metal-poor. It is one of the closest known exoplanetary systems to the Sun.

Unless any planet around Proxima Centauri is certainly detected...
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Sirius_Alpha on 2nd September 2008, 6:21 pm

Edasich wrote:Finally a new planet!!!
Precisely =). Finally a reason to live again. Laughing

Edasich wrote:Not listed at EP at the moment.
Yeah, it says the next update to the EPE will be tomorrow.

According to the paper, the separation between the planet and its host star make it an excellent candidate for astrometric determination of the orbit inclination. Perhaps in the somewhat near future, direct imaging might be possible.

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Lazarus on 4th September 2008, 7:25 am

Looks like EPE missed this one...
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Edasich on 4th September 2008, 7:31 am

Quite disappointing.... Sad
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Sirius_Alpha on 4th September 2008, 6:06 pm

I e-mailed Jean Schneider about it.

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Edasich on 5th September 2008, 4:58 am

Yes but site still displays "Next update 3 September".
However it's very sad to see only 1 new planet after nearly 4 months of total inactivity
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Lazarus on 5th September 2008, 5:00 am

Yeah looks like he forgot to take down the notice, there have been updates since then.

For example this one.
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Edasich on 5th September 2008, 5:01 am

Yeah, I noticed that only one.
Poor thing btw
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Lazarus on 5th September 2008, 2:33 pm

Edasich wrote:However it's very sad to see only 1 new planet after nearly 4 months of total inactivity
Ah come on, there's a second new discovery as well - new super-Earth around Gliese 176... (granted at the cost of the loss of a hot Neptune)...
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Edasich on 5th September 2008, 2:59 pm

Only a correction in previous data. Not a newly detected planet.
However, only 2 planets?


All these surveys, projects claiming to be able detecting plethora of low mass planets, super Earths et cetera start sounding "bankruptcy".... Evil or Very Mad

I may be satisfied if next week's going to bring a 12 of new planets.
But it's quite surreal...
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Darkness nova on 6th September 2008, 9:34 pm

Metal poor eh? So that probably means it's full of gaseous or frozen planets and probably doesn't have much thats very close to it.

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Sirius_Alpha on 6th September 2008, 11:09 pm

From what I've been able to gather, gas planets tend to form in metal-rich disks, whereas terrestrial planets don't seem to really care what the metallicity is.

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Darkness nova on 7th September 2008, 12:20 am

I'ma make a thread about this in general qeustions for clairficationz.

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GJ 832 - Jupiter analogue and HZ super-Earth

Post by Sirius_Alpha on 23rd June 2014, 8:38 pm

Do we not already have a GJ 832 thread?? Yes we do. Merged.

GJ 832c: A super-earth in the habitable zone
http://arxiv.org/abs/1406.5587

We report the detection of GJ 832c, a super-Earth orbiting near the inner edge of the habitable zone of GJ 832, an M dwarf previously known to host a Jupiter analog in a nearly-circular 9.4-year orbit. The combination of precise radial-velocity measurements from three telescopes reveals the presence of a planet with a period of 35.68+/-0.03 days and minimum mass (m sin i) of 5.4+/-1.0 Earth masses. GJ 832c moves on a low-eccentricity orbit (e=0.18+/-0.13) towards the inner edge of the habitable zone. However, given the large mass of the planet, it seems likely that it would possess a massive atmosphere, which may well render the planet inhospitable. Indeed, it is perhaps more likely that GJ 832c is a "super-Venus," featuring significant greenhouse forcing. With an outer giant planet and an interior, potentially rocky planet, the GJ 832 planetary system can be thought of as a miniature version of our own Solar system.

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Sirius_Alpha on 25th June 2014, 11:31 pm

http://www.universetoday.com/112806/nearby-super-earth-is-best-habitable-candidate-so-far-astronomers-say/

Nearby Super-Earth is Best Habitable Candidate So Far, Astronomers Say

On what planet???

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Lazarus on 26th June 2014, 2:47 am

Paper: object likely has a very thick atmosphere and probably more like Venus
Planetary Habitability Laboratory: SQUEEEEEE!!! MOST HABITABLE PLANET EVARRRR!!!!!
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Stalker on 26th June 2014, 3:34 am

In the PHL criteria this is a mesoplanet. The habitable zone is different for different teams.

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by Sirius_Alpha on 17th April 2016, 11:56 pm

A bizarre paper. And maybe I just haven't had enough sleep. But the point seems to be that there's a stable region between the two detected planets, and they can't rule out a terrestrial planet in the area with the current RV data, ergo the planet exists. Originally I wasn't going to post it but the stability analysis might have some value.

An Earth-Like Planet in GJ 832 System
http://arxiv.org/abs/1604.04544

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Re: GJ 832 - Jupiter analogue and HZ super-Earth

Post by tommi59 on 18th April 2016, 3:36 am

No detection of additional planets at al,weird paperl not worth to even mention as potential earthlike planets can exist in almost every system
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Re: GJ 832 - Jupiter analogue and HZ super-Earth

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