COROT planets |
COROT planets |
May 3 2007, 02:20 PM
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Junior Member Group: Members Posts: 22 Joined: 3-January 07 Member No.: 1551 |
http://news.bbc.co.uk/1/hi/sci/tech/6611557.stm
is reporting that Corot has found its first planet. I can't find an arxiv paper about this, or even a press release, but there are many here better at squirreling out data releases than me. 1.3Mj, 1.8Rj so it's a very inflated planet, 1.5-day orbit around a 'star quite similar to the Sun' might account for that. In the Monoceros field (Corot is now pointing at the Scutum/Aquila field). |
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May 4 2007, 07:32 PM
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Senior Member Group: Members Posts: 1018 Joined: 29-November 05 From: Seattle, WA, USA Member No.: 590 |
Steve: The Kepler guys figure about 1/2 percent of stars with planets will be aligned enough for us to see transits -- assuming random alignment.
http://kepler.nasa.gov/sci/basis/character.html Wikipedia claims 10%, but in this case I think I know whom to believe. http://en.wikipedia.org/wiki/Methods_of_de...#Transit_method I've also wondered whether this will REALLY be random, but I note that so far very few observed planets are transiting -- no surprise given only 200-odd extrasolar planets so far. So I guess we can say that, if it's not random, it's not hugely skewed either. I note also that Kepler claims they can detect Jovian-sized transits from a single event; it's only for Earth-sized transits that it needs to see three events to be sure. --Greg |
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May 7 2007, 11:07 PM
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#3
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Senior Member Group: Members Posts: 1585 Joined: 14-October 05 From: Vermont Member No.: 530 |
I note also that Kepler claims they can detect Jovian-sized transits from a single event; it's only for Earth-sized transits that it needs to see three events to be sure. Interesting. Hopefully Kepler prospers for a good many many years then! Also that 0.5% figure is both plenty high, yet depressing in the regard that 99.5% will still be hidden from this technique. But it's no doubt conservative. I again wonder how many "near misses" will be detectable. Should be great to see. |
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