Effect of optical depth on study of chemical properties of massive star forming clumps

Jian Jun Zhou; Run Xia Li; Donghui Quan; Jarken Esimbek; Yu Xin He; Da Lei Li; Xin Di Tang; Gang Wu; Wei Guang Ji; Zheng Xue Chang; Xia Zhang

doi:10.1063/1674-0068/cjcp1911212

Effect of optical depth on study of chemical properties of massive star forming clumps

Jian Jun Zhou
, Run Xia Li^*
, Donghui Quan
, Jarken Esimbek
, Yu Xin He
, Da Lei Li
, Xin Di Tang
, Gang Wu
, Wei Guang Ji
, Zheng Xue Chang
, Xia Zhang

^*Corresponding author for this work

Department of Chemistry and Materials Science

CAS - National Astronomical Observatories
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Eastern Kentucky University

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

Abstract

Here we present the study on chemical properties of massive star forming clumps using N₂H⁺(1-0), H¹³CO⁺(1-0), HCN(1-0) and HN¹³C(1-0) data from the literature [Astron. Astrophys. 563, A97 (2014)]. We found that abundances of H¹³CO⁺ and HN¹³C are affected by H₂ column densities. As the median values of these two abundances increase by nearly 10 times from stages A to B, H¹³CO⁺ and HN¹³C are suitable for tracing the evolution of massive star forming clumps. The order of rapidity in growth of abundances of all the four studied molecules from stages A to B, is H¹³CO⁺, HCN, HN¹³C, and N₂H⁺, from the highest to the lowest. Our results suggest that the observing optically thin molecular lines with high angular resolution are necessary to study the chemical evolution of massive star forming clumps.

Original language	English
Pages (from-to)	114-118
Number of pages	5
Journal	Chinese Journal of Chemical Physics
Volume	33
Issue number	1
DOIs	https://doi.org/10.1063/1674-0068/cjcp1911212
Publication status	Published - 1 Feb 2020

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title = "Effect of optical depth on study of chemical properties of massive star forming clumps",

abstract = "Here we present the study on chemical properties of massive star forming clumps using N2H+(1-0), H13CO+(1-0), HCN(1-0) and HN13C(1-0) data from the literature [Astron. Astrophys. 563, A97 (2014)]. We found that abundances of H13CO+ and HN13C are affected by H2 column densities. As the median values of these two abundances increase by nearly 10 times from stages A to B, H13CO+ and HN13C are suitable for tracing the evolution of massive star forming clumps. The order of rapidity in growth of abundances of all the four studied molecules from stages A to B, is H13CO+, HCN, HN13C, and N2H+, from the highest to the lowest. Our results suggest that the observing optically thin molecular lines with high angular resolution are necessary to study the chemical evolution of massive star forming clumps.",

author = "Zhou, \{Jian Jun\} and Li, \{Run Xia\} and Donghui Quan and Jarken Esimbek and He, \{Yu Xin\} and Li, \{Da Lei\} and Tang, \{Xin Di\} and Gang Wu and Ji, \{Wei Guang\} and Chang, \{Zheng Xue\} and Xia Zhang",

note = "Publisher Copyright: {\textcopyright} 2020 Chinese Physical Society.",

year = "2020",

month = feb,

day = "1",

doi = "10.1063/1674-0068/cjcp1911212",

language = "English",

volume = "33",

pages = "114--118",

journal = "Chinese Journal of Chemical Physics",

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TY - JOUR

T1 - Effect of optical depth on study of chemical properties of massive star forming clumps

AU - Zhou, Jian Jun

AU - Li, Run Xia

AU - Quan, Donghui

AU - Esimbek, Jarken

AU - He, Yu Xin

AU - Li, Da Lei

AU - Tang, Xin Di

AU - Wu, Gang

AU - Ji, Wei Guang

AU - Chang, Zheng Xue

AU - Zhang, Xia

PY - 2020/2/1

Y1 - 2020/2/1

N2 - Here we present the study on chemical properties of massive star forming clumps using N2H+(1-0), H13CO+(1-0), HCN(1-0) and HN13C(1-0) data from the literature [Astron. Astrophys. 563, A97 (2014)]. We found that abundances of H13CO+ and HN13C are affected by H2 column densities. As the median values of these two abundances increase by nearly 10 times from stages A to B, H13CO+ and HN13C are suitable for tracing the evolution of massive star forming clumps. The order of rapidity in growth of abundances of all the four studied molecules from stages A to B, is H13CO+, HCN, HN13C, and N2H+, from the highest to the lowest. Our results suggest that the observing optically thin molecular lines with high angular resolution are necessary to study the chemical evolution of massive star forming clumps.

AB - Here we present the study on chemical properties of massive star forming clumps using N2H+(1-0), H13CO+(1-0), HCN(1-0) and HN13C(1-0) data from the literature [Astron. Astrophys. 563, A97 (2014)]. We found that abundances of H13CO+ and HN13C are affected by H2 column densities. As the median values of these two abundances increase by nearly 10 times from stages A to B, H13CO+ and HN13C are suitable for tracing the evolution of massive star forming clumps. The order of rapidity in growth of abundances of all the four studied molecules from stages A to B, is H13CO+, HCN, HN13C, and N2H+, from the highest to the lowest. Our results suggest that the observing optically thin molecular lines with high angular resolution are necessary to study the chemical evolution of massive star forming clumps.

UR - https://www.scopus.com/pages/publications/85082136309

U2 - 10.1063/1674-0068/cjcp1911212

DO - 10.1063/1674-0068/cjcp1911212

M3 - Article

AN - SCOPUS:85082136309

SN - 1674-0068

VL - 33

SP - 114

EP - 118

JO - Chinese Journal of Chemical Physics

JF - Chinese Journal of Chemical Physics

IS - 1

ER -

Effect of optical depth on study of chemical properties of massive star forming clumps

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