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HC3N observations of nearby galaxies
Jiang, Xue-Jian1,2,6; Wang, Jun-Zhi3; Gao, Yu1,2,6; Gu, Qiu-Sheng4,5,6
2017-04-01
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN1432-0746
Volume600Pages:7
Corresponding AuthorJiang, Xue-Jian(xjjiang@pmo.ac.cn)
AbstractAims. We aim to systematically study the properties of the different transitions of the dense molecular gas tracer HC3N in galaxies. Methods. We have conducted single-dish observations of HC3N emission lines towards a sample of nearby gas-rich galaxies. HC3N(J = 2-1) was observed in 20 galaxies with the Effelsberg 100-m telescope. HC3N(J = 24-23) was observed in nine galaxies with the 10-m Submillimeter Telescope (SMT). Results. HC3N 2-1 is detected in three galaxies: IC 342, M 66, and NGC 660 (>3 sigma). HC3N 24-23 is detected in three galaxies: IC 342, NGC 1068, and IC 694. These are the first measurements of HC3N 2-1 in a relatively large sample of external galaxies, although the detection rate is low. For the HC3N 2-1 non-detections, upper limits (2 sigma) are derived for each galaxy, and stacking the non-detections is attempted to recover the weak signal of HC3N. The stacked spectrum, however, does not show any significant signs of HC3N 2-1 emission. The results are also compared with other transitions of HC3N observed in galaxies. Conclusions. The low detection rate of both transitions suggests low abundance of HC3N in galaxies, which is consistent with other observational studies. The comparison between HC3N and HCN or HCO+ shows a large diversity in the ratios between HC3N and HCN or HCO+. More observations are needed to interpret the behavior of HC3N in different types of galaxies.
Keywordgalaxies: active galaxies: ISM galaxies: evolution ISM: molecules
DOI10.1051/0004-6361/201629066
WOS KeywordDENSE MOLECULAR GAS ; SPATIALLY-RESOLVED CHEMISTRY ; ACTIVE GALAXIES ; STAR-FORMATION ; ULTRALUMINOUS GALAXIES ; NGC 1068 ; ARP 220 ; STARBURST ; LINE ; REGIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000400754000036
PublisherEDP SCIENCES S A
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23088
Collection中国科学院紫金山天文台
Corresponding AuthorJiang, Xue-Jian
Affiliation1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
5.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
6.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Xue-Jian,Wang, Jun-Zhi,Gao, Yu,et al. HC3N observations of nearby galaxies[J]. ASTRONOMY & ASTROPHYSICS,2017,600:7.
APA Jiang, Xue-Jian,Wang, Jun-Zhi,Gao, Yu,&Gu, Qiu-Sheng.(2017).HC3N observations of nearby galaxies.ASTRONOMY & ASTROPHYSICS,600,7.
MLA Jiang, Xue-Jian,et al."HC3N observations of nearby galaxies".ASTRONOMY & ASTROPHYSICS 600(2017):7.
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