An Imaging Search for Post-main-sequence Planets of Sirius B

  title={An Imaging Search for Post-main-sequence Planets of Sirius B},
  author={Miles Lucas and Michael Bottom and Garreth J. Ruane and Sam Ragland},
  journal={The Astronomical Journal},
We present deep imaging of Sirius B, the closest and brightest white dwarf, to constrain post-main-sequence planetary evolution in the Sirius system. We use Keck/NIRC2 in L′ band (3.776 μm) across three epochs in 2020 using the technique of angular differential imaging. Our observations are speckle-limited out to 1 au and background-limited beyond. The 5σ detection limits from our best-performing epoch are 17–20.4 L′ absolute magnitude. We consider multiple planetary formation pathways in the… 



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  • O. Guyon
  • Physics, Geology
    Annual Review of Astronomy and Astrophysics
  • 2018
Over the last two decades, several thousand exoplanets have been identified, and their study has become a high scientific priority. Direct imaging of nearby exoplanets and the circumstellar disks in