| Habitable Exoplanets Catalog: announcement 3rd January | |
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+5Daniel tommi59 Led_Zep pochimax Lazarus 9 posters |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Habitable Exoplanets Catalog: announcement 3rd January 2nd January 2013, 7:43 pm | |
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pochimax Planetary Embryo
Number of posts : 89 Location : Torrejon, Spain Registration date : 2011-09-09
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 2:52 pm | |
| maybe a Kepler koi confirmed? | |
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Led_Zep SuperJovian
Number of posts : 721 Location : France Registration date : 2011-09-09
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 3:00 pm | |
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pochimax Planetary Embryo
Number of posts : 89 Location : Torrejon, Spain Registration date : 2011-09-09
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 3:16 pm | |
| Well... hummm, uauuuuuuhhhh!!!
maybe indirect detections thanks to TTVs and TDVs. Not direct photometric transiting moon deteccions. | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 4:41 pm | |
| Yeeees well the HEC people have this habit of classing all gas giants in the habitable zone as "habitable exomoons". As far as I'm aware no-one's claiming an actual exomoon detection yet. | |
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tommi59 Jovian
Number of posts : 596 Age : 46 Location : Baile Atha Cliath Registration date : 2010-07-31
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 4:55 pm | |
| Well some people maybe want to live on gas or ice giants.Seriously there could be some moons around such gas or ice giants,but finding them and confirmation will be very difficult , especially if 3 or 4 moons orbit one such gas giant | |
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Daniel SuperEarth
Number of posts : 273 Registration date : 2009-11-14
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 5:41 pm | |
| One thing that I don't understand here: why KIC number instead of KOI number for this candidates??
Last edited by Daniel on 3rd January 2013, 5:49 pm; edited 1 time in total | |
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Daniel SuperEarth
Number of posts : 273 Registration date : 2009-11-14
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 5:49 pm | |
| About exomoons could be like Lazarus cited or could be that "The Hunt for Exomoons with Kepler (HEK) Project" did find they first exomoons but if this are new candidates I don't think so.
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Sirius_Alpha Admin
Number of posts : 4320 Location : Earth Registration date : 2008-04-06
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 6:29 pm | |
| A few of those would pass for the Earth analogues that rumour has it Kepler isn't seeing. They cite this database which seems to list 18,000 or so planets. I recall I had a disagreement recently about this. Is there really 18,000 unique planets in this dataset? And if so, how many of them are secure enough to be considered having a good shot at being real? We're used to the 2300+ list, and I presume those have gone through some preliminary vetting. How about these 18000? Fourteen of these systems appear to host ten planets. _________________ Caps Lock: Cruise control for 'Cool'!
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Daniel SuperEarth
Number of posts : 273 Registration date : 2009-11-14
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 7:04 pm | |
| - Sirius_Alpha wrote:
- A few of those would pass for the Earth analogues that rumour has it Kepler isn't seeing.
Maybe now they start see it in the Kepler pipeline,Maybe are plenty of Earth-size planets candidates... remember the Stars in Kepler field it's too noise and this make Kepler have difficult to detect Earth-size planets,and this is one of the motives of why Kepler extension mission is necessary to detect such Earth-size planets candidates,specially in habitable zone of G type stars 14 of this system host 10 planets?? If turn to be truly Planets this systems will be very interesting indeed! | |
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Kodas Micrometeorite
Number of posts : 11 Location : Kent, UK Registration date : 2012-09-11
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 3rd January 2013, 7:29 pm | |
| - Daniel wrote:
- One thing that I don't understand here: why KIC number instead of KOI number for this candidates??
These are not official candidates, they are TCEs, so don't have KOIs. Even if they did it appears to be a developing standard to refer to targets by the star's KIC until it has been confirmed. - Sirius_Alpha wrote:
- A few of those would pass for the Earth analogues that rumour has it Kepler isn't seeing. They cite this database which seems to list 18,000 or so planets. I recall I had a disagreement recently about this. Is there really 18,000 unique planets in this dataset? And if so, how many of them are secure enough to be considered having a good shot at being real? We're used to the 2300+ list, and I presume those have gone through some preliminary vetting. How about these 18000? Fourteen of these systems appear to host ten planets.
No, the vast majority of these are spurious signals, variability etc. I mentioned this back when this paper was brought up on the Kepler thread. This is actually the second TCE paper, the last one was published early on in the mission and had ~5000 TCEs. The latest official candidates paper that used a far longer time series than that had only ~2300 (and plenty of these have turned out to be false positives anyway). These TCEs represent only the initial cull of a long validation process, and shouldn't be compared to actual candidates. Since the latest TCE paper was published i've actually had a look at some of those supposed large multiplanet systems in the public data, sufficed to say the Kepler TPS seems to have gotten a little confused by some star's variability... Incidentally this activity seems a little pointless as as far as I can see PHL probably used the KIC star data to make these judgements, and frankly the KIC data is so inaccurate that the true values for all these "candidates" are going to be way off. | |
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jyril Planetesimal
Number of posts : 133 Registration date : 2008-06-09
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 4th January 2013, 5:03 am | |
| To summarize, I understand the designation process is the following:
KIC (input catalog) -> TCE (transit-like event detected) -> KOI (probable transit) -> Kepler-XX (more or less confirmed planet using RV etc.) _________________ The universe is not only stranger than we imagine, it is stranger than we can imagine.
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Led_Zep SuperJovian
Number of posts : 721 Location : France Registration date : 2011-09-09
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 4th January 2013, 7:36 am | |
| For me, we can talk seriously with KOI (Kepler object of interest), not with TCE To summarize HEC is not a serious website... | |
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pochimax Planetary Embryo
Number of posts : 89 Location : Torrejon, Spain Registration date : 2011-09-09
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 4th January 2013, 8:02 am | |
| But, some KIC numbers have been confirmed as planets, without having assigned a KOI number.
HEC has done its own filtering of the TCEs, in order to have better candidates.... they said they have studied TCEs with more than 3 transit events, so they could be as good candidates as KOIs.
On the other hand, I agree with Kodas, KIC it' s not reliable to obtain planetary parameters from its star sizes. | |
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ExA Micrometeorite
Number of posts : 13 Registration date : 2011-02-03
| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January 7th January 2013, 6:29 pm | |
| - Led_Zep wrote:
- For me, we can talk seriously with KOI (Kepler object of interest), not with TCE
To summarize HEC is not a serious website... It is sometimes too bold. But I think it has a valid point in the fact that Jupiters and super Jupiters ain habitable zones are not mentioned as habitable by scientists...I think they should be mentioned as planets with possible habitable moons around them. | |
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| Subject: Re: Habitable Exoplanets Catalog: announcement 3rd January | |
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| Habitable Exoplanets Catalog: announcement 3rd January | |
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