COROT planets |
COROT planets |
May 14 2007, 09:53 AM
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#16
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
"...eclipses that can be detected are “shallower and thus the planets detectable are going to be smaller. If the periods are short enough so that we can see enough eclipses for a given planet (a process called epoch-folding) we are going to be so sensitive that we could see one earth-radii planets.”
From a quick update with Malcolm Fridlund at spacEurope. -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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May 14 2007, 04:38 PM
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#17
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Member Group: Members Posts: 249 Joined: 11-June 05 From: Finland (62°14′N 25°44′E) Member No.: 408 |
According to the SpacEUROPE blog COROT's sensitivity may be just enough to detect reflected light from an extrasolar planet's surface in a similar manner Spitzer has done... but instead of infrared, it observes in the visible light.
-------------------- The universe is not only stranger than we imagine, it is stranger than we can imagine.
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Jul 25 2007, 05:16 PM
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#18
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Junior Member Group: Members Posts: 72 Joined: 20-April 05 Member No.: 272 |
Anyone know when the COROT guys are going to make their next announcement? Any rumors yet?
Their first was a wonderful tease... |
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Jul 25 2007, 08:26 PM
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#19
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Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
A small update was posted yesterday on the CNES website.
http://smsc.cnes.fr/COROT/GP_actualite.htm#juil2007a |
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Jul 26 2007, 02:33 AM
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#20
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Member Group: Members Posts: 213 Joined: 21-January 07 From: Wigan, England Member No.: 1638 |
According to the SpacEUROPE blog COROT's sensitivity may be just enough to detect reflected light from an extrasolar planet's surface in a similar manner Spitzer has done... but instead of infrared, it observes in the visible light. Interesting; thanks for posting this. Spitzer has done both emission and absorption, but reflection?! I guess they must be using IRAC 3.6 microns, as the longer wavelength bands will be swamped by intrinsic emission from the planet. Oh boy, that would be quite an achievement if they can do it. I would hate to be the |
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Jul 26 2007, 02:47 AM
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#21
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Junior Member Group: Members Posts: 72 Joined: 20-April 05 Member No.: 272 |
A small update was posted yesterday on the CNES website. http://smsc.cnes.fr/COROT/GP_actualite.htm#juil2007a Thanks for pointing out the update, Rakhir. QUOTE The level-0 products delivered by CNES to scientific laboratories, as well as the level-1 data under production at LESIA laboratory, confirm the excellent performances of the instrument. A complete set of twelve thousand exoplanet lights curves, corresponding to one month of observation, has already been generated. Now, I assume they mean 12,000 light curves from stars that are candidates for hosting exoplanets. 12,000 light curves involving exoplanets in one month would be utterly mind blowing. Not helping with the anticipation... |
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Jul 26 2007, 03:48 AM
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#22
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Not helping with the anticipation... Oh, no, not at all! Doesn't sound beyond the pale, though. We really are on the verge of finding out whether planets are more plentiful than stars, if that is indeed the case...the smart money's always been on 'yes'. Mach's Principle may yet prove to be far more powerful than we realize at the local level, although in a quantitative, not qualitative sense... -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jul 26 2007, 09:10 AM
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#23
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
A small update was posted yesterday on the CNES website. Thanks for the update Rakhir. tacitus, Here's what I got from Dr. Fridlund (ESA COROT Project Scientist) some days ago, when it was announced the discovery of water by Tinetti and co-workers: "COROT is progressing according to plan. There will not be any new announcements before we have had time to write a few papers and submit them to the journals so with vacations you are talking about at least 3 months. We have a lot of exo-candidates that we are beginning to follow up from the ground (I was myself in Tenerife last week and observed one of them). But as I said above it will be some time." -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jul 26 2007, 09:37 PM
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#24
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Man...I'm trying to contain irrational exuberance, but boy oh boy oh boy...we might just actually know a thing or two in detail--FINALLY--about how things really are around other stars after all the novels and stories, even sans starships, in a few short years!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jul 26 2007, 10:16 PM
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#25
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Member Group: Members Posts: 249 Joined: 11-June 05 From: Finland (62°14′N 25°44′E) Member No.: 408 |
Well, the negative side of the COROT survey is that the search is limited to closely orbiting transiting planets so we get a very biased sample. Which is far better than nothing, of course.
A microlensing planet survey equipped even with a relatively small telescope could find Earth-mass or smaller planets in any orbital distance (including free-floating terrestrial planets)! It could detect every planet of the Solar System except Mercury, which is not massive enough and orbits too close the Sun. The obvious downside is of course that the lensing events are unique and no physical properties of the planets can be studied. But it could give a good sample of planets around very different kinds of stars. -------------------- The universe is not only stranger than we imagine, it is stranger than we can imagine.
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Jul 27 2007, 09:19 AM
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#26
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
I'm wondering...what would be required for such a "gravity lensing" mission? Could COROT not search for such events (change in radiance of microlensing instead of small dips by transit)?
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Jul 27 2007, 11:14 AM
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#27
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Member Group: Members Posts: 247 Joined: 17-February 07 From: ESAC, cerca Madrid, Spain. Member No.: 1743 |
This isn't related to Corot, but it may be of interest to people who are interested in Corot. Venus Express is taking observations of Earth, from Venus, using the Virtis and Spicav spectrometers. The idea is to try and gather a data point regarding what a habitable planet would look like from a distance. Once the technology is available, observations like this may give an idea of what would be best to look for.
Several of these observations have been taken, with more scheduled. It is a low priority thing, and I have no idea when any results may come out of it, but it is an interesting idea and some observation time is being dedicated to it. -------------------- --
cndwrld@yahoo.com |
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Aug 16 2007, 04:34 PM
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#28
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
All planet lovers
COROT update may be coming next week during the European Planetary Science Conference - August 20-24th. http://meetings.copernicus.org/epsc2007/annotation.html COROT abstract http://www.cosis.net/abstracts/EPSC2007/00...7-J-00316-1.pdf Craig |
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Aug 20 2007, 09:28 AM
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#29
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
http://www.planetary.org/blog/article/00001089/
That's about it - it was more 'CoRoT will be great when we get our ground software finished' than 'Look - Exo-Earth's!' Doug |
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Aug 20 2007, 11:31 AM
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#30
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
Thanks Doug!!
I suspect they are going to keep things pretty close to their chests for a while.... but still an interesring report. And a teaser for what is to come. Craig |
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