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ALMA Maps of Dust and Warm Dense Gas Emission in the Starburst Galaxy IC 5179
Zhao, Yinghe1,2,3; Lu, Nanyao4,5; Diaz-Santos, Tanio6; Xu, C. Kevin4,5; Gao, Yu7; Charmandaris, Vassilis8,9; van der Werf, Paul10; Zhang, Zhi-Yu11,12; Cao, Chen13,14
2017-08-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume845Issue:1Pages:10
Corresponding AuthorZhao, Yinghe(zhaoyinghe@ynao.ac.cn)
AbstractWe present our high-resolution (0."15 x 0."13, similar to 34pc) observations of the CO (6-5) line emission, which probes the warm and dense molecular gas, and the 434 mu m dust continuum emission in the nuclear region of the starburst galaxy IC 5179, conducted with the Atacama Large Millimeter Array (ALMA). The CO. (6-5) emission is spatially distributed in filamentary structures with many dense cores and shows a velocity field that is characteristic of a circumnuclear rotating gas disk, with 90% of the rotation speed arising within a radius of less than or similar to 150 pc. At the scale of our spatial resolution, the CO. (6-5) and dust emission peaks do not always coincide, with their surface brightness ratio varying by a factor of similar to 10. This result suggests that their excitation mechanisms are likely different, as further evidenced by the southwest to northeast spatial gradient of both CO-to-dust continuum ratio and Pa-alpha equivalent width. Within the nuclear region (radius similar to 300 pc) and with a resolution of similar to 34 pc, the CO line flux (dust flux density) detected in our ALMA observations is 180 +/- 18 Jy km s(-1) (71 +/- 7 mJy), which accounts for 22% (2.4%) of the total value measured by Herschel.
Keywordgalaxies: active galaxies: nuclei galaxies: ISM galaxies: starburst galaxies: evolution submillimeter: galaxies
DOI10.3847/1538-4357/aa7ff8
WOS KeywordLUMINOUS INFRARED GALAXIES ; HIGH-REDSHIFT GALAXIES ; SKY LIRG SURVEY ; STAR-FORMATION ; MOLECULAR GAS ; NUCLEAR REGION ; GOALS SAMPLE ; CO EMISSION ; NGC 1614 ; ARP 220
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000407462000017
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22626
Collection中国科学院紫金山天文台
Corresponding AuthorZhao, Yinghe
Affiliation1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
3.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China
5.Chinese Acad Sci, China Chile Joint Ctr Astron, Camino El Observ, Santiago 1515, Chile
6.Univ Diego Portales, Fac Ingn, Nucleo Astron, Av Ejercito Libertador 441, Santiago, Chile
7.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
8.Univ Crete, Dept Phys, GR-71003 Iraklion, Greece
9.Natl Observ Athens, IAASARS, GR-15236 Penteli, Greece
10.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
11.Univ Edinburgh, Inst Astron, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
12.ESO, Karl Schwarzschild Str 2, D-85748 Munich, Germany
13.Shandong Univ Weihai, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China
14.Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yinghe,Lu, Nanyao,Diaz-Santos, Tanio,et al. ALMA Maps of Dust and Warm Dense Gas Emission in the Starburst Galaxy IC 5179[J]. ASTROPHYSICAL JOURNAL,2017,845(1):10.
APA Zhao, Yinghe.,Lu, Nanyao.,Diaz-Santos, Tanio.,Xu, C. Kevin.,Gao, Yu.,...&Cao, Chen.(2017).ALMA Maps of Dust and Warm Dense Gas Emission in the Starburst Galaxy IC 5179.ASTROPHYSICAL JOURNAL,845(1),10.
MLA Zhao, Yinghe,et al."ALMA Maps of Dust and Warm Dense Gas Emission in the Starburst Galaxy IC 5179".ASTROPHYSICAL JOURNAL 845.1(2017):10.
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