A Gap with a Deficit of Large Grains in the Protoplanetary Disk around TW Hya

@article{Tsukagoshi2016AGW,
  title={A Gap with a Deficit of Large Grains in the Protoplanetary Disk around TW Hya},
  author={T. Tsukagoshi and H. Nomura and T. Muto and R. Kawabe and D. Ishimoto and K. Kanagawa and S. Okuzumi and S. Ida and C. Walsh and T. J. Millar},
  journal={The Astrophysical Journal},
  year={2016},
  volume={829}
}
  • T. Tsukagoshi, H. Nomura, +7 authors T. J. Millar
  • Published 2016
  • Physics
  • The Astrophysical Journal
  • We report ∼3 au resolution imaging observations of the protoplanetary disk around TW Hya at 145 and 233 GHz with the Atacama Large Millimeter/submillimeter Array. Our observations revealed two deep gaps (∼25%-50%) at 22 and 37 au and shallower gaps (a few percent) at 6, 28, and 44 au, as recently reported by Andrews et al. The central hole with a radius of ∼3 au was also marginally resolved. The most remarkable finding is that the spectral index α(R) between bands 4 and 6 peaks at the 22 au gap… CONTINUE READING
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