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ALMA Observation of NGC 5135: The Circumnuclear CO (6-5) and Dust Continuum Emission at 45 pc Resolution
Cao, Tianwen1,2,3,4; Lu, Nanyao1; Xu, C. Kevin1; Zhao, Yinghe5,6,7; Madhav Kalari, Venu8; Gao, Yu9; Charmandaris, Vassilis10,11; Diaz Santos, Tanio12; van der Werf, Paul13; Cao, Chen14,15; Wu, Hong2,3; Inami, Hanae16; Evans, Aaron17,18
2018-10-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume866Issue:2Pages:15
Corresponding AuthorCao, Tianwen(twcao@bao.ac.cn)
AbstractWe present high-resolution (0 ''.17. x 0.'' 14) Atacama Large Millimeter/submillimeter Array (ALMA) observations of the CO (6-5) line and 435 mu m dust continuum emission within a similar to 9 '' x 9 '' area centered on the nucleus of the galaxy NGC 5135. NGC 5135 is a well-studied luminous infrared galaxy that also harbors a Compton-thick active galactic nucleus (AGN). At the achieved resolution of 48 x 40 pc, the CO (6-5) and dust emissions are resolved into gas "clumps" along the symmetrical dust lanes associated with the inner stellar bar. The clumps have radii in the range of similar to 45-180 pc and CO (6-5) line widths of similar to 60-88 km s(-1). The CO (6-5) to dust continuum flux ratios vary among the clumps and show an increasing trend with the [Fe II]/Br gamma ratios, which we interpret as evidence for supernova-driven shocked gas providing a significant contribution to the CO (6-5) emission. The central AGN is undetected in continuum, nor is it detected in CO (6-5) if its line velocity width is no less than similar to 40 km s(-1). We estimate that the AGN contributes at most 1% of the integrated CO (6-5) flux of 512 +/- 24 Jy km s(-1) within the ALMA field of view, which in turn accounts for similar to 32% of the CO (6-5) flux of the whole galaxy.
Keywordgalaxies: active galaxies: general galaxies: ISM galaxies: nuclei galaxies: starburst
DOI10.3847/1538-4357/aae1f4
WOS KeywordACTIVE GALACTIC NUCLEI ; 1.644 MICRON EMISSION ; FE-II ; STAR-FORMATION ; MOLECULAR CLOUDS ; INFRARED LUMINOSITY ; SEYFERT-GALAXIES ; EXCITATION MECHANISM ; LINE REGION ; STARBURST
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000456300400001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/19923
Collection中国科学院紫金山天文台
Corresponding AuthorCao, Tianwen
Affiliation1.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Pontificia Univ Catolica Chile, Inst Astrofis, Av Vicuna Mackenna 4860, Santiago 7820436, Chile
5.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
6.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
7.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
8.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile
9.Purple Mt Observ, Key Lab Radio Astron, 8 YuanHua Rd, Nanjing 210034, Jiangsu, Peoples R China
10.Univ Crete, Dept Phys, GR-71003 Iraklion, Greece
11.IAASARS, Natl Observ Athens, GR-15236 Pen Teli, Greece
12.Univ Diego Portales, Fac Ingn, Nucleo Astron, Av Ejercito Libertador 441, Santiago, Chile
13.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
14.Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China
15.Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China
16.Univ Lyon1, Univ Lyon, ENS Lyon, CNRS,CRAL,UMR 5574, F-69230 St Genis Laval, France
17.Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA
18.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA
Recommended Citation
GB/T 7714
Cao, Tianwen,Lu, Nanyao,Xu, C. Kevin,et al. ALMA Observation of NGC 5135: The Circumnuclear CO (6-5) and Dust Continuum Emission at 45 pc Resolution[J]. ASTROPHYSICAL JOURNAL,2018,866(2):15.
APA Cao, Tianwen.,Lu, Nanyao.,Xu, C. Kevin.,Zhao, Yinghe.,Madhav Kalari, Venu.,...&Evans, Aaron.(2018).ALMA Observation of NGC 5135: The Circumnuclear CO (6-5) and Dust Continuum Emission at 45 pc Resolution.ASTROPHYSICAL JOURNAL,866(2),15.
MLA Cao, Tianwen,et al."ALMA Observation of NGC 5135: The Circumnuclear CO (6-5) and Dust Continuum Emission at 45 pc Resolution".ASTROPHYSICAL JOURNAL 866.2(2018):15.
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