processes that result in planetary system misalignment around both single and multiple stars.'
author:
- |
    G. M. Kennedy[^1]$^1$, M. C. Wyatt$^1$, B. Sibthorpe$^2$, G. Duchêne$^{3,4}$, P. Kalas$^4$, B. C. Matthews$^{5,6}$, J. S. Greaves$^7$, K. Y. L. Su$^8$, M. P. Fitzgerald$^{9,10}$\
    $^1$ Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK\
    $^2$ UK Astronomy Technology Center, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK\
    $^3$ Department of Astronomy, University of California, B-20 Hearst Field Annex, Berkeley, CA 94720-3411, USA\
    $^4$ Laboratoire d’Astrophysique, Observatoire de Grenoble, Université J. Fourier, CNRS, France\
    $^5$ Herzberg Institute of Astrophysics, National Research Council Canada, 5071 West Saanich Road., Victoria, BC, Canada, V9E 2E7, Canada\
    $^6$ University of Victoria, Finnerty Road, Victoria, BC, V8W 3P6, Canada\
    $^7$ School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK\
    $^8$ Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA\
    $^9$ Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, L-413, 7000 East Avenue, Livermore, CA 94550, USA\
    $^{10}$ Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095-1547, USA
title: '99 Herculis: Host to a Circumbinary Polar-ring Debris Disk'
---

circumstellar matter — 