Profile of the \(^{12}\)CO(3-2) Emission Line Detected From the Debris Disc of 49 Ceti

Authors

  • Pham Thi Tuyet Nhung Vietnam National satellite center
  • Pham Tuan Anh Department of Astrophysics, Vietnam National Satellite Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
  • Do Thi Hoai Department of Astrophysics, Vietnam National Satellite Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
  • Pham Ngoc Diep Department of Astrophysics, Vietnam National Satellite Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
  • Nguyen Thi Phuong Department of Astrophysics, Vietnam National Satellite Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
  • Nguyen Thi Thao Department of Astrophysics, Vietnam National Satellite Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
  • Pierre Dariulat Department of Astrophysics, Vietnam National Satellite Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/27/2/9423

Keywords:

circumstellar matter, debris disc, individual (49 Ceti)

Abstract

The CO(3-2) emission of the debris disc of the young A star 49 Ceti, known to be particularly gas rich, has been recently detected and measured using the ALMA interferometer. We study the observed line profile and comment on each of the possible contributions to its width. Line broadening is found to be dominated by Keplerian shear and an upper limit of 0.8 kms FWHM is placed on other possible contributions,including temperature, confirming the quietness of the gas contained in the disc and disfavouring models that would require relatively violent events to generate secondary gas.

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Published

24-08-2017

How to Cite

Tuyet Nhung, P. T., Anh, P. T., Hoai, D. T., Diep, P. N., Phuong, N. T., Thao, N. T., & Dariulat, P. (2017). Profile of the \(^{12}\)CO(3-2) Emission Line Detected From the Debris Disc of 49 Ceti. Communications in Physics, 27(2), 107. https://doi.org/10.15625/0868-3166/27/2/9423

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