A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo)

Juan Tuo; Xiaohu Li; Jixian Sun; Tom J. Millar; Yong Zhang; Jianjie Qiu; Donghui Quan; Jarken Esimbek; Jianjun Zhou; Yu Gao; Qiang Chang; Lin Xiao; Yanan Feng; Zhenzhen Miao; Rong Ma; Ryszard Szczerba; Xuan Fang

doi:10.3847/1538-4365/ad2460

A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo)

Juan Tuo
, Xiaohu Li^*
, Jixian Sun
, Tom J. Millar
, Yong Zhang
, Jianjie Qiu
, Donghui Quan
, Jarken Esimbek
, Jianjun Zhou
, Yu Gao
, Qiang Chang
, Lin Xiao
, Yanan Feng
, Zhenzhen Miao
, Rong Ma
, Ryszard Szczerba
, Xuan Fang

^*Corresponding author for this work

CAS - National Astronomical Observatories
University of Chinese Academy of Sciences
Xinjiang Key Laboratory of Radio Astrophysics
CAS - Purple Mountain Observatory
Chinese Academy of Sciences
Queen's University Belfast
Sun Yat-Sen University
The University of Hong Kong
Research Center for Astronomical Computing
Zhejiang Lab
Xiamen University
Shandong University of Technology
Changchun Institute of Technology
Polish Academy of Sciences

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

We present an unbiased λ 3 mm spectral line survey (between 84.5 and 115.8 GHz), conducted by the Purple Mountain Observatory 13.7 m radio telescope, together with updated modeling results, toward the carbon-rich asymptotic giant branch star IRC+10216 (CW Leo). A total of 75 spectral lines (96 transitions) are detected, and identified to arise from 19 molecules: C₂H, l-C₃H, C₄H, CN, C₃N, HC₃N, HC₅N, HCN, HNC, CH₃CN, MgNC, CO, c-C₃H₂, SiC₂, SiO, SiS, CS, C₂S, C₃S, and their isotopologues. Among them, one molecular emission line (H¹³CCCN J = 13-12) is discovered in IRC+10216 for the first time. The excitation temperature, column density, and fractional abundance of the detected species are deduced by assuming they are in local thermodynamic equilibrium. In addition, the isotopic ratios of [¹²C]/[¹³C], [³²S]/[³⁴S], [²⁸Si]/[²⁹Si], and [¹²C³⁴S]/[¹³C³²S] are obtained and found to be consistent with previous studies. Finally, we summarize all of the 106 species detected in IRC+10216 to date with their observed and modeled column densities for the convenience of future studies.

Original language	English
Article number	45
Journal	Astrophysical Journal, Supplement Series
Volume	271
Issue number	2
DOIs	https://doi.org/10.3847/1538-4365/ad2460
Publication status	Published - 1 Apr 2024
Externally published	Yes

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Tuo, J., Li, X., Sun, J., Millar, T. J., Zhang, Y., Qiu, J., Quan, D., Esimbek, J., Zhou, J., Gao, Y., Chang, Q., Xiao, L., Feng, Y., Miao, Z., Ma, R., Szczerba, R., & Fang, X. (2024). A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo). Astrophysical Journal, Supplement Series, 271(2), Article 45. https://doi.org/10.3847/1538-4365/ad2460

@article{c23ec40b8f58421683a2de71e406f02e,

title = "A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo)",

abstract = "We present an unbiased λ 3 mm spectral line survey (between 84.5 and 115.8 GHz), conducted by the Purple Mountain Observatory 13.7 m radio telescope, together with updated modeling results, toward the carbon-rich asymptotic giant branch star IRC+10216 (CW Leo). A total of 75 spectral lines (96 transitions) are detected, and identified to arise from 19 molecules: C2H, l-C3H, C4H, CN, C3N, HC3N, HC5N, HCN, HNC, CH3CN, MgNC, CO, c-C3H2, SiC2, SiO, SiS, CS, C2S, C3S, and their isotopologues. Among them, one molecular emission line (H13CCCN J = 13-12) is discovered in IRC+10216 for the first time. The excitation temperature, column density, and fractional abundance of the detected species are deduced by assuming they are in local thermodynamic equilibrium. In addition, the isotopic ratios of [12C]/[13C], [32S]/[34S], [28Si]/[29Si], and [12C34S]/[13C32S] are obtained and found to be consistent with previous studies. Finally, we summarize all of the 106 species detected in IRC+10216 to date with their observed and modeled column densities for the convenience of future studies.",

author = "Juan Tuo and Xiaohu Li and Jixian Sun and Millar, \{Tom J.\} and Yong Zhang and Jianjie Qiu and Donghui Quan and Jarken Esimbek and Jianjun Zhou and Yu Gao and Qiang Chang and Lin Xiao and Yanan Feng and Zhenzhen Miao and Rong Ma and Ryszard Szczerba and Xuan Fang",

note = "Publisher Copyright: {\textcopyright} 2024. The Author(s). Published by the American Astronomical Society.",

year = "2024",

month = apr,

day = "1",

doi = "10.3847/1538-4365/ad2460",

language = "English",

volume = "271",

journal = "Astrophysical Journal, Supplement Series",

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Tuo, J, Li, X, Sun, J, Millar, TJ, Zhang, Y, Qiu, J, Quan, D, Esimbek, J, Zhou, J, Gao, Y, Chang, Q, Xiao, L, Feng, Y, Miao, Z, Ma, R, Szczerba, R & Fang, X 2024, 'A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo)', Astrophysical Journal, Supplement Series, vol. 271, no. 2, 45. https://doi.org/10.3847/1538-4365/ad2460

TY - JOUR

T1 - A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo)

AU - Tuo, Juan

AU - Li, Xiaohu

AU - Sun, Jixian

AU - Millar, Tom J.

AU - Zhang, Yong

AU - Qiu, Jianjie

AU - Quan, Donghui

AU - Esimbek, Jarken

AU - Zhou, Jianjun

AU - Gao, Yu

AU - Chang, Qiang

AU - Xiao, Lin

AU - Feng, Yanan

AU - Miao, Zhenzhen

AU - Ma, Rong

AU - Szczerba, Ryszard

AU - Fang, Xuan

PY - 2024/4/1

Y1 - 2024/4/1

N2 - We present an unbiased λ 3 mm spectral line survey (between 84.5 and 115.8 GHz), conducted by the Purple Mountain Observatory 13.7 m radio telescope, together with updated modeling results, toward the carbon-rich asymptotic giant branch star IRC+10216 (CW Leo). A total of 75 spectral lines (96 transitions) are detected, and identified to arise from 19 molecules: C2H, l-C3H, C4H, CN, C3N, HC3N, HC5N, HCN, HNC, CH3CN, MgNC, CO, c-C3H2, SiC2, SiO, SiS, CS, C2S, C3S, and their isotopologues. Among them, one molecular emission line (H13CCCN J = 13-12) is discovered in IRC+10216 for the first time. The excitation temperature, column density, and fractional abundance of the detected species are deduced by assuming they are in local thermodynamic equilibrium. In addition, the isotopic ratios of [12C]/[13C], [32S]/[34S], [28Si]/[29Si], and [12C34S]/[13C32S] are obtained and found to be consistent with previous studies. Finally, we summarize all of the 106 species detected in IRC+10216 to date with their observed and modeled column densities for the convenience of future studies.

AB - We present an unbiased λ 3 mm spectral line survey (between 84.5 and 115.8 GHz), conducted by the Purple Mountain Observatory 13.7 m radio telescope, together with updated modeling results, toward the carbon-rich asymptotic giant branch star IRC+10216 (CW Leo). A total of 75 spectral lines (96 transitions) are detected, and identified to arise from 19 molecules: C2H, l-C3H, C4H, CN, C3N, HC3N, HC5N, HCN, HNC, CH3CN, MgNC, CO, c-C3H2, SiC2, SiO, SiS, CS, C2S, C3S, and their isotopologues. Among them, one molecular emission line (H13CCCN J = 13-12) is discovered in IRC+10216 for the first time. The excitation temperature, column density, and fractional abundance of the detected species are deduced by assuming they are in local thermodynamic equilibrium. In addition, the isotopic ratios of [12C]/[13C], [32S]/[34S], [28Si]/[29Si], and [12C34S]/[13C32S] are obtained and found to be consistent with previous studies. Finally, we summarize all of the 106 species detected in IRC+10216 to date with their observed and modeled column densities for the convenience of future studies.

UR - https://www.scopus.com/pages/publications/85188953173

U2 - 10.3847/1538-4365/ad2460

DO - 10.3847/1538-4365/ad2460

M3 - Article

AN - SCOPUS:85188953173

SN - 0067-0049

VL - 271

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 2

M1 - 45

ER -

A λ 3 mm Line Survey toward the Circumstellar Envelope of the Carbon-rich AGB Star IRC+10216 (CW Leo)

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