Comments on: Kepler’s first crop http://oklo.org/2010/01/04/keplers-first-crop/ characterizing planetary systems Wed, 18 Apr 2012 18:53:22 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: cwmagee http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33684 cwmagee Wed, 27 Jan 2010 02:08:36 +0000 http://oklo.org/?p=934#comment-33684 @ James: You can't map Earth at sub-millimeter accuracy, because plate tectonics drags continents around at tens of mm/yr. @ James:
You can’t map Earth at sub-millimeter accuracy, because plate tectonics drags continents around at tens of mm/yr.

]]> By: James Salsman http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33658 James Salsman Sat, 16 Jan 2010 08:18:10 +0000 http://oklo.org/?p=934#comment-33658 @Greg, it looks like the algorithm for space VLBI at 9-10 microns (ozone) is pretty much exactly the same as the algorithm for synthetic aperture radar. If we admitted we knew how to to the former, then we would have to admit we have sub-millimeter accuracy for map making. Is that likely a military secret? Check out Fig. 19 on page 1351, "2 cm" scale detail: http://dsp.rice.edu/~wailam/research/ImagingTHzRadiation2007.pdf @Greg, it looks like the algorithm for space VLBI at 9-10 microns (ozone) is pretty much exactly the same as the algorithm for synthetic aperture radar. If we admitted we knew how to to the former, then we would have to admit we have sub-millimeter accuracy for map making. Is that likely a military secret? Check out Fig. 19 on page 1351, “2 cm” scale detail: http://dsp.rice.edu/~wailam/research/ImagingTHzRadiation2007.pdf

]]> By: Thursday Linkspam « Another Kiri Blog http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33654 Thursday Linkspam « Another Kiri Blog Fri, 15 Jan 2010 01:18:21 +0000 http://oklo.org/?p=934#comment-33654 [...] and star-like objects that the Kepler mission has discovered. Read more at The Planetary Society, Systemic, Discovery News and Universe [...] [...] and star-like objects that the Kepler mission has discovered. Read more at The Planetary Society, Systemic, Discovery News and Universe [...]

]]> By: coolstar http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33643 coolstar Fri, 08 Jan 2010 07:05:26 +0000 http://oklo.org/?p=934#comment-33643 @Andy What Welsh and collaborators didn't mention is that there should be at least dozens of NON-transiting hot planets for which phase + ellipsoidal variations should be observable. In fact, they may prove easier to model than the transiting cases. @Andy What Welsh and collaborators didn’t mention is that there should be at least dozens of NON-transiting hot planets for which phase + ellipsoidal variations should be observable. In fact, they may prove easier to model than the transiting cases.

]]> By: coolstar http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33642 coolstar Fri, 08 Jan 2010 06:59:18 +0000 http://oklo.org/?p=934#comment-33642 Several talks by various Kepler team members at the meeting made it quite clear that they were NOT expecting to get RV confirmation on many of their discoveries. In fact, since the primary mission goal is to obtain transits of earth sized planets in the habitable zones of their stars, this was obviously known going in. Thus I don't understand the phrase about transits being of little scientific value unless masses can be confirmed thru RV measurements. Of course, everyone, most of all the Kepler team, would like to know the masses and densities of earth-sized transiting planets, but that's not going to be possible on stars this faint until the next generation of ground based telescopes come on line. $600 M is actually cheap, IMNSHO , relative to the science Kepler is returning. I'd be interested in knowing Greg's opinion on Scott Gaudi's estimate of the fraction of solar system like exo-systems based on microlensing data (I certainly learned something: that with the right data masses CAN be obtained thru microlensing events). Several talks by various Kepler team members at the meeting made it quite clear that they were NOT expecting to get RV confirmation on many of their discoveries. In fact, since the primary mission goal is to obtain transits of earth sized planets in the habitable zones of their stars, this was obviously known going in. Thus I don’t understand the phrase about transits being of little scientific value unless masses can be confirmed thru RV measurements. Of course, everyone, most of all the Kepler team, would like to know the masses and densities of earth-sized transiting planets, but that’s not going to be possible on stars this faint until the next generation of ground based telescopes come on line. $600 M is actually cheap, IMNSHO , relative to the science Kepler is returning.
I’d be interested in knowing Greg’s opinion on Scott Gaudi’s estimate of the fraction of solar system like exo-systems based on microlensing data (I certainly learned something: that with the right data masses CAN be obtained thru microlensing events).

]]> By: Alex http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33640 Alex Wed, 06 Jan 2010 19:05:48 +0000 http://oklo.org/?p=934#comment-33640 I waited patiently since last year for first results. I'm overjoyed now =D I waited patiently since last year for first results. I’m overjoyed now =D

]]> By: Alex http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33639 Alex Wed, 06 Jan 2010 19:04:31 +0000 http://oklo.org/?p=934#comment-33639 <a href="#comment-33636" rel="nofollow">@cwmagee </a> @cwmagee Quote from Kepler-2b's Wikipedia page: "Mass (m) 1.776+0.077?0.049 MJ" If the Planet Transits, does it not mean the mass can be found? (I'm not totally sure, but it's what I've picked up over all the Transit discoveries I've seen) @cwmagee
@cwmagee
Quote from Kepler-2b’s Wikipedia page:

“Mass (m) 1.776+0.077?0.049 MJ”

If the Planet Transits, does it not mean the mass can be found?
(I’m not totally sure, but it’s what I’ve picked up over all the Transit discoveries I’ve seen)

]]> By: andy http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33637 andy Wed, 06 Jan 2010 18:41:29 +0000 http://oklo.org/?p=934#comment-33637 cwmagee: I'm wondering whether it would be possible to model the size of the bulges from the photometry and work back from that to the planetary mass. In fact having read the paper in more detail, the idea of using the ellipsoidal variation to constrain the system mass ratio is mentioned at the start of section 4. cwmagee: I’m wondering whether it would be possible to model the size of the bulges from the photometry and work back from that to the planetary mass. In fact having read the paper in more detail, the idea of using the ellipsoidal variation to constrain the system mass ratio is mentioned at the start of section 4.

]]> By: cwmagee http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33636 cwmagee Wed, 06 Jan 2010 11:45:22 +0000 http://oklo.org/?p=934#comment-33636 Andy, How can you model the size of the tidal bulge without knowing the mass of the planet? Andy,
How can you model the size of the tidal bulge without knowing the mass of the planet?

]]> By: cwmagee http://oklo.org/2010/01/04/keplers-first-crop/comment-page-1/#comment-33634 cwmagee Wed, 06 Jan 2010 03:09:11 +0000 http://oklo.org/?p=934#comment-33634 Doesn't the Kelper price tag include a huge slab of pre-paid ground-based telescope time? Although I was wondering- can candidates be excluded using a smaller telescope, or dies the dimness of the candidates mean that they still need lots of glass? Doesn’t the Kelper price tag include a huge slab of pre-paid ground-based telescope time? Although I was wondering- can candidates be excluded using a smaller telescope, or dies the dimness of the candidates mean that they still need lots of glass?

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