Long-lived Protoplanetary Disks in Multiple Systems: The VLA View of HD 98800

  title={Long-lived Protoplanetary Disks in Multiple Systems: The VLA View of HD 98800},
  author={{\'A}lvaro Ribas and Enrique Mac'ias and Catherine C. Espaillat and Gaspard Duch{\^e}ne},
  journal={The Astrophysical Journal},
The conditions and evolution of protoplanetary disks in multiple systems can be considerably different from those around single stars, which may have important consequences for planet formation. We present Very Large Array (VLA) 8.8 mm (34 GHz) and 5 cm (6 GHz) observations of the quadruple system HD 98800, which consists of two spectroscopic binary systems (Aa-Ab, Ba-Bb). The Ba-Bb pair is surrounded by a circumbinary disk, which is usually assumed to be a debris disk given its ∼10 Myr age and… 
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