Circumbinary planets by RV

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Circumbinary planets by RV

Post by Lazarus on 8th September 2009, 3:37 pm

Don't think this one got posted here...

Title: The Radial Velocity TATOOINE Search for Circumbinary Planets: Planet Detection Limits for a Sample of Double-lined Binary Stars - Initial Results from Keck I/Hires, Shane/CAT/Hamspec and TNG/Sarg Observations

No planets detected, but two things are impressive here: one, that radial velocity measurements of SB2 spectroscopic binaries can be made sufficiently accurately to detect circumbinary planets, two, that it is possible to come up with a relevant acronym for TATOOINE.

Systems surveyed:

  • HD 9939
  • HD 13974 (Delta Trianguli)
  • HD 47415
  • HD 78418 (75 Cancri)
  • HD 86146 (19 Leonis Minoris)
  • HD 195987
  • HD 210027 (Iota Pegasi)
  • HD 214686
  • HD 221950 (16 Piscium)
  • HD 282975
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Re: Circumbinary planets by RV

Post by NuclearVacuum on 8th September 2009, 8:17 pm

Wait, Maciej Konacki?? Didn't he discover the infamous "HD 188756 Ab"? (talk about irony). But anyway, I can't wait for them to discover more circumbinary planets.

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Re: Circumbinary planets by RV

Post by Lazarus on 9th September 2009, 1:05 pm

Quite a few planet hunters have announced detections that were later disproven...

In any case Konacki has among his credits lead author on the discovery papers for OGLE-TR-56b, OGLE-TR-113b, OGLE-TR-10b...
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Re: Circumbinary planets by RV

Post by Edasich on 9th September 2009, 1:19 pm

However the study of Delta Trianguli in the research paper should make NuclearVacuum happy, shouldn't it? Laughing

Anyway it seems no planet with 0.3-10 Mj is orbiting within 1-2 AUs from each star.
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Re: Circumbinary planets by RV

Post by NuclearVacuum on 9th September 2009, 2:57 pm

Edasich wrote:However the study of Delta Trianguli in the research paper should make NuclearVacuum happy, shouldn't it? Laughing

Anyway it seems no planet with 0.3-10 Mj is orbiting within 1-2 AUs from each star.

It does make me happy!

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Re: Circumbinary planets by RV

Post by Lazarus on 26th October 2009, 2:25 pm

More from the TATOOINE survey: orbital elements for some binary stars, also limits on planets for HD 123999 (12 Bo÷tis), HD 160922 (Omega Draconis) and HD 200077.

arXiv: High precision orbital and physical parameters of double-lined spectroscopic binary stars - HD78418, HD123999, HD160922, HD200077 and HD210027
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Re: Circumbinary planets by RV

Post by Lazarus on 2nd February 2010, 6:38 pm

Presentation (including video) by Konacki about the TATOOINE survey.

Apparently naming your planet-hunting survey after a Star Wars planet gets you a VIP tour of Skywalker Ranch. Smile
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Re: Circumbinary planets by RV

Post by Sirius_Alpha on 2nd February 2010, 6:44 pm

Ahh very nice.

Here comes
Death StAR: A Pulsar Planet Search
StAr DeStRoYeR: Finding evidence for past planets in supernovae remnant shapes.
X-wing: A RV Curve Analysis of Spectroscopic binaries
HoTh: A microlensing survey designed to find icy super-Earths beyond the ice line.

etc ; )

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