Molecular Emissions from Circumstellar Envelopes in the Presence of  a Binary Companion

Ngoc Hung Tran; Trung Van Dinh; Dong Bang Pham; Thanh Bao Thi Nguyen

doi:10.15625/0868-3166/15391

Molecular Emissions from Circumstellar Envelopes in the Presence of a Binary Companion

Ngoc Hung Tran, Trung Van Dinh, Dong Bang Pham, Thanh Bao Thi Nguyen

Author affiliations

Authors

Ngoc Hung Tran Institute of Physics, Vietnam Academy of Science and Technology and Graduate University of Science and Technology, Vietnam Academy of Science and Technology
Trung Van Dinh Institute of Physics, Vietnam Academy of Science and Technology
Dong Bang Pham Institute of Physics, Vietnam Academy of Science and Technology and Graduate University of Science and Technology, Vietnam Academy of Science and Technology
Thanh Bao Thi Nguyen Institute of Physics, Vietnam Academy of Science and Technology and Graduate University of Science and Technology, Vietnam Academy of Science and Technology

DOI:

https://doi.org/10.15625/0868-3166/15391

Keywords:

circumsteller envelope, molecular emission

Abstract

Following our previous work on the hydrodynamic simulations of the structure of circumstellar envelopes in the presence of a binary companion, in this paper we present the results of radiative transfer calculations for molecular emission line HC3N J=5 – 4 from these simulated circumstellar envelopes. We show that the molecular line emission traces closely the spiral pattern and the associated density enhancement induced by the presence of the binary companion. The molecular emission provides the spatial kinematics of the features within the envelope, which is valuable for estimating the orbital parameters of the binary system and for inferring the physical conditions of the gas within the envelope. We also show that the appearance of the molecular emission depends on the viewing angle resulting in a range of shapes from the spiral pattern to ring-like features, similar to that observed recently in a number of circumstellar envelopes at high angular resolution.

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Published

06-01-2021

How to Cite

[1]

N. H. Tran, T. V. Dinh, D. B. Pham and T. B. T. Nguyen, Molecular Emissions from Circumstellar Envelopes in the Presence of a Binary Companion, Comm. Phys. 31 (2021) 35. DOI: https://doi.org/10.15625/0868-3166/15391.

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Vol. 31 No. 1 (2021)

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Papers

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