• DOI:10.3847/1538-4357/aaba7c
• Corpus ID: 55070427

Differences in the Gas and Dust Distribution in the Transitional Disk of a Sun-like Young Star, PDS 70

@article{Long2018DifferencesIT,
  title={Differences in the Gas and Dust Distribution in the Transitional Disk of a Sun-like Young Star, PDS 70},
  author={Zachary C. Long and Eiji Akiyama and Michael L. Sitko and Rachel B. Fernandes and Korash Assani and Carol A. Grady and Michel Cur{\'e} and William C. Danchi and Ruobing Dong and Misato Fukagawa and Yasuhiro Hasegawa and Jun Hashimoto and Th. Henning and Shu-ichiro Inutsuka and Stefan Kraus and Jungmi Kwon and Carey M. Lisse and Hauyu Baobabu Liu and Satoshi Mayama and Takayuki Muto and Takao Nakagawa and Michihiro Takami and Motohide Tamura and Thayne M. Currie and John P. Wisniewski and Yi Yang},
  journal={The Astrophysical Journal},
  year={2018},
  volume={858}
}

• Z. Long, E. Akiyama, +23 authors Yi Yang
• Published 2 April 2018
• Physics, Geology
• The Astrophysical Journal

We present ALMA 0.87 mm continuum, HCO+ J = 4–3 emission line, and CO J = 3–2 emission line data of the disk of material around the young, Sun-like star PDS 70. These data reveal the existence of a possible two-component transitional disk system with a radial dust gap of 0.″42 ± 0.″05, an azimuthal gap in the HCO+ J = 4–3 moment zero map, as well as two bridge-like features in the gas data. Interestingly these features in the gas disk have no analog in the dust disk making them of particular interest. We modeled the dust disk using the Monte Carlo radiative transfer code HOCHUNK3D using a two-disk component. We find that there is a radial gap that extends from 15 to 60 au in all grain sizes, which differs from previous work.