Discovery of an au-scale excess in millimeter emission of TW Hya

  title={Discovery of an au-scale excess in millimeter emission of TW Hya},
  author={Takashi Tsukagoshi and Takayuki Muto and Hideko Nomura and Ryohei Kawabe and Kazuhiro D. Kanagawa and Satoshi Okuzumi and Shigeru Ida and Catherine Henry Walsh and Tom J Millar and Sanemichi Z. Takahashi and Jun Hashimoto and Taichi Uyama and M Gabriel Tamura},
  journal={arXiv: Solar and Stellar Astrophysics},
  • Takashi Tsukagoshi, Takayuki Muto, +10 authors M Gabriel Tamura
  • Published 2019
  • Physics
  • arXiv: Solar and Stellar Astrophysics
  • We report the detection of an excess in dust continuum emission at 233~GHz (1.3~mm in wavelength) in the protoplanetary disk around TW~Hya revealed through high-sensitivity observations at $\sim$3~au resolution with the Atacama Large Millimeter/submillimeter Array (ALMA). The sensitivity of the 233~GHz image has been improved by a factor of 3 with regard to that of our previous cycle 3 observations. The overall structure is mostly axisymmetric, and there are apparent gaps at 25 and 41 au as… CONTINUE READING