Talk about debris disks and planetary systems

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Talk about debris disks and planetary systems

Post by Lazarus on 20th March 2010, 8:31 am

Debris disk clues to nearby exoplanets

Part of the KITP Program: The Theory and Observation of Exoplanets (January 25 - May 28, 2010). Includes discussion of the Fomalhaut, HR 8799, HD 69830 and Epsilon Eridani systems, plus a bit about Beta Pictoris.

Among other points, it seems that the case for Epsilon Eridani c is very shaky, and there may be some issues with the Beta Pictoris b and its relation to the disk around the star.
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Re: Talk about debris disks and planetary systems

Post by Sirius_Alpha on 20th March 2010, 10:26 am

Would you happen to know which 18 stars have both RV planets and disks?

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Re: Talk about debris disks and planetary systems

Post by Lazarus on 20th March 2010, 10:57 am

Hmm they haven't uploaded slides (yet?) - I'm sure it will be easier once that happens. The ones I can make out are

  • Fomalhaut
  • HR 8799
  • HD 69830
  • Epsilon Eridani
  • GJ 581 (radius of disc given as 4 AU in case people were wondering)
  • HD 142
  • HD 10647
  • HD 19994
  • HD 38529
  • HD 50554
  • HD 52265?
  • HD 82943
  • 61 Vir
  • 70 Vir
  • HD 128311
  • ?
  • HD 178911 B
  • HD 202206
  • ?
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Re: Talk about debris disks and planetary systems

Post by Sirius_Alpha on 20th March 2010, 11:43 am

Awesome! Thanks. Especially for the Gliese 581 debris disk radius!

The issues they brought up with Eps Eri c and Beta Pictoris do not sound new.

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Re: Talk about debris disks and planetary systems

Post by Lazarus on 23rd March 2010, 11:46 am

Slide with the list
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Re: Talk about debris disks and planetary systems

Post by Sirius_Alpha on 23rd March 2010, 12:02 pm

Thanks for that! I'm surprised at the value of 1 AU for HD 69830's disk. I remember it being debated whether or not the disk was interior or exterior to d's orbit, but I don't remember it being determined that it was exterior.

Also, kind of relieved that the disk at Gliese 581 is beyond the orbit of d, and not between c and d. Hoping for a low-mass planet there.

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Re: Talk about debris disks and planetary systems

Post by Sirius_Alpha on 23rd March 2010, 7:34 pm

They mention HD 150706 in that table. Last I heard it's planet wasn't confirmed.

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