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HD 80606b transit detected

February 25th, 2009

I’m very pleased to be able to announce that HD 80606b is a transiting planet!

It looks like priority of discovery goes Claire Moutou and the French and Swiss team, who beat at least one other team to submission by a matter of hours. I’m attaching a draft of the French and Swiss Team’s paper that was just sent to me. Congratulations to Everyone involved!

Here’s the preprint.

Details to follow…

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  1. darin
    February 26th, 2009 at 00:36 | #1

    Way cool!!

  2. February 26th, 2009 at 00:50 | #2

    Wow, that’s really impressive. What a catch! Hats off to Moutou et al.

    Now to fill in the blanks on the light curve and Rossiter time series.

  3. pnutzman
    February 26th, 2009 at 04:46 | #3

    Amazing. 111 day period. I wonder what the longest period eclipsing binary is and how 80606′s period compares.

    I also wonder about all the studies of orbital precession that could be aided by the enormous lever arm on 80606′s impact parameter.

    This planet is a gift from the gods.

  4. February 26th, 2009 at 09:45 | #4

    Fantastic !

    Congratulations to the French/Swiss (and Portuguese) team and also to the Systemic team that “put their money on this one” !

    Luis

  5. February 26th, 2009 at 13:31 | #5

    Our observations the night before show no ingress as of BJD=2454875.985, so according to their figure 1, that rules out b < 0.75 and a total duration of less than 13.2 hours.

    Also, the fact that the transit must occur so late strongly suggests a spin-orbit misalignment as their RM measurements can’t be symmetric.

    http://www.astronomy.ohio-state.edu/~jdeast/demonex/HD80606b.R.2009-02-13.jpg

    Congrats to Claire Moutou and co-authors!

  6. February 26th, 2009 at 13:32 | #6

    I mean our observations rule out a total duration of **more** than 13.2 hours.

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