WISE find transit planets?

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WISE find transit planets?

Post by Borislav on 20th March 2010, 2:53 pm

http://wise.ssl.berkeley.edu/sky_coverage.html
I noticed that the north and south pole of its orbit satellite photographs over each period of around its orbit. I.e. two sites of the sky the total area of 1.28 square degrees to be obtained 4320 images 9 months of the mission. Do you plan to search for transiting planets in these data?
For comparison with the same area COROT field of about 2 square degrees (after breaking 1 square degree), and time monitoring of up to 5 months.

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Re: WISE find transit planets?

Post by Sirius_Alpha on 20th March 2010, 4:17 pm

I don't think WISE could really help. CoRoT and Kepler stare at the same region of the sky for a long time. WISE is covering the entire sky in sections, moving on from one to another. Unless the transit occurs in the timeframe that the image is taken, it won't be detected (and even then, I doubt it would show up as a transit if it's just one image being taken).

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Re: WISE find transit planets?

Post by Borislav on 20th March 2010, 4:29 pm

Sirius_Alpha wrote:Unless the transit occurs in the timeframe that the image is taken, it won't be detected (and even then, I doubt it would show up as a transit if it's just one image being taken).

But telescope Kepler because of limitations in data transmission also take photometry every 30 minutes (Plus pause for the transfer of collected data to Earth.). WISE photographing the area circled in yellow circle every 90 minutes (time of one revolution in its orbit).


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Re: WISE find transit planets?

Post by Borislav on 20th March 2010, 4:52 pm

Here is a quote for a better understanding of how to conduct survey of the sky WISE

http://www.planetary.org/blog/article/00002070/
WISE will be in a polar orbit, rotating once per orbit so that its telescope always points away from Earth. So on each orbit it maps a complete north-to-south strip across the sky at two longitudes -- one longitude running from north to south and then the longitude 180 degrees across from that as it returns from south to north. Thus it will take six months to produce the all-sky map. There are a few wiggles as it has to avoid looking at the Moon, but they'll compensate by adjusting the angle of the telescope slightly to the east or west of the Moon and will still manage to achieve complete coverage.

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Re: WISE find transit planets?

Post by Borislav on 8th May 2010, 2:25 pm

I found the answer in this presentation

http://www.noao.edu/meetings/eventful-universe/Friday0319/Hoffman_Eventful_Universe.pdf












So precision photometry WISE about 10%. It seems possible to detect the transit of the planet in only red and brown dwarfs.

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