HD 128311 System Architecture and Characterisation

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HD 128311 System Architecture and Characterisation

Post by Sirius_Alpha on 13th October 2014, 3:13 pm

ASTROMETRY, RADIAL VELOCITY, AND PHOTOMETRY: THE HD 128311 SYSTEM REMIXED WITH DATA FROM HST, HET, AND APT*
http://iopscience.iop.org/0004-637X/795/1/41/

- Revised orbital fits for b and c planets.
- Possible evidence of a third planet in a short period orbit.
- System inclination of 55.9514.55 degrees.
- Disconfirmation of a 2:1 resonance between the b and c planets.

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Re: HD 128311 System Architecture and Characterisation

Post by Lazarus on 7th January 2015, 3:01 am

Hanno Rein "Reanalysis of radial velocity data from the resonant planetary system HD128311"
http://arxiv.org/abs/1501.00980

Uses a dynamical fit to the RVs to show that the system is in a 2:1 resonance, in contrast to the findings of the earlier paper.
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