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Imaging faint companions very close to stars

  • Eugene Serabyn (a1), Dimitri Mawet (a1) and Rick Burruss (a1)

Abstract

A vortex coronagraph on our extreme adaptive optics “well-corrected subaperture” on the Hale telescope has recently allowed the imaging of the triple-planet HR8799 system with a 1.5 m subaperture. Moreover, a faint, low-mass companion to a second star was imaged only one diffraction beam width away from the primary. These results illustrate the potential of the vortex coronagraph, which can enable exoplanet imaging and characterization with smaller telescopes than previously thought.

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References

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Burruss, R. S., Serabyn, E., Mawet, D. P., Roberts, J. E., Hickey, J. P., Rykoski, K., Bikkannavar, S., & Crepp, J. R. 2003, Proc. SPIE, 7736, 77365X
Guyon, O., Pluzhnik, E. A., Kuchner, M. J., Collins, B., & Ridgway, S. T. 2006, ApJS, 167, 81
Mawet, D., Serabyn, E., Liewer, K., Burruss, R., Hickey, J., & Shemo, D. 2010, ApJ 709, 53
Serabyn, E., Mawet, D., & Burruss, R. 2010, Nature, 464, 1018
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