首页|Investigating Sulfur Chemistry in the HD163296 Disk

Investigating Sulfur Chemistry in the HD163296 Disk

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Sulfur chemistry in the formation process of low-mass stars and planets remains poorly understood.The protoplanetary disks are the birthplace of planets and its distinctive environment provides an intriguing platform for investigating models of sulfur chemistry.We analyzed the Atacama Large Millimeter/submillimeter Array observations of CS 7-6 transitions in the HD 163296 disk and performed astrochemical modeling to explore its sulfur chemistry.We simulated the distribution of sulfur-containing molecules and compared it with observationally deduced fractional column densities.We have found that the simulated column density of CS is consistent with the observationally deduced fractional column densities,while the simulated column density of C2S is lower than the observationally deduced upper limits on column densities.This results indicate that we have a good understanding of the chemical properties of CS and C2S in the disk.We also investigated the influence of the C/O ratio on sulfur-containing molecules and found that the column densities of SO,SO2,and H2S near the central star are dependent on the C/O ratio.Additionally,we found that the N[CS]/N[SO]ratio can serve as a promising indicator of the disk's C/O ratio in HD 163296.Overall,the disk of HD 163296 provides a favorable environment for the detection of sulfur-containing molecules.

Protoplanetary DisksAstrochemistryMolecular Processes

Rong Ma、Donghui Quan、Yan Zhou、Jarken Esimbek、Dalei Li、Xiaohu Li、Xia Zhang、Juan Tuo、Yanan Feng

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Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

University of Chinese Academy of Sciences,Beijing 100049,China

Research Center for Intelligent Computing Platforms,Zhejiang Laboratory,Hangzhou 311100,China

BinZhou University,Binzhou 256600,China

Key Laboratory of Radio Astronomy,Chinese Academy of Sciences,Urumqi 830011,China

Xinjiang Key Laboratory of Radio Astrophysics,Urumqi 830011,China

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National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Key R&D Program of ChinaNatural Science Foundation of Xinjiang Uygur Autonomous Region of ChinaTianchi Doctoral Program 2021Youth Innovation Promotion Association CAS

123730261197307512203091121730752022YFA16031032022D01A156

2024

10.1088/1674-4527/ad5771

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(7)