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题名: ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130
作者: Zhao YingHe(赵应和)1, 2, 3, 4; Lu, Nanyao5, 6, 7; Xu, C. Kevin7; Gao Yu(高煜)3, 4; Barcos-Munoz, Loreto8; Diaz-Santos, Tanio9; Appleton, Philip7; Charmandaris, Vassilis10, 11; Armus, Lee12; van der Werf, Paul13; Evans, Aaron2, 8; Cao, Chen14, 15; Inami, Hanae16; Murphy, Eric7
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2016-04-01
卷号: 820, 期号:2
关键词: galaxies: active ; galaxies: evolution ; galaxies: ISM ; galaxies: nuclei ; galaxies: starburst ; submillimeter: galaxies
DOI: 10.3847/0004-637X/820/2/118
文章类型: Article
英文摘要: In this paper, we report our high-resolution (0 ''.20 x 0 ''.14 or similar to 70 x 49 pc) observations of the CO(6-5) line emission, which probes warm and dense molecular gas, and the 434 mu m dust continuum in the nuclear region of NGC 7130, obtained with the Atacama Large Millimeter Array (ALMA). The CO line and dust continuum fluxes detected in our ALMA observations are 1230 +/- 74 Jy km s(-1) and 814 +/- 52 mJy, respectively, which account for 100% and 51% of their total fluxes. We find that the CO(6-5) and dust emissions are generally spatially correlated, but their brightest peaks show an offset of similar to 70 pc, suggesting that the gas and dust emissions may start decoupling at this physical scale. The brightest peak of the CO(6-5) emission does not spatially correspond to the radio continuum peak, which is likely dominated by an active galactic nucleus (AGN). This, together with our additional quantitative analysis, suggests that the heating contribution of the AGN to the CO(6-5) emission in NGC 7130 is negligible. The CO(6-5) and the extinction-corrected Pa-alpha maps display striking differences, suggestive of either a breakdown of the correlation between warm dense gas and star formation at linear scales of <100 pc or a large uncertainty in our extinction correction to the observed Pa-a image. Over a larger scale of similar to 2.1 kpc, the doublelobed structure found in the CO(6-5) emission agrees well with the dust lanes in the optical/near-infrared images.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: LUMINOUS INFRARED GALAXIES ; WARM MOLECULAR GAS ; STAR-FORMATION ; HERSCHEL-SPIRE ; STARBURST GALAXIES ; SEYFERT-GALAXIES ; SPECTROSCOPY ; DUST ; VIEW ; CATALOG
收录类别: SCI
项目资助者: NSFC(11173059 ; CAS pilot-b program(XDB09000000) ; 11390373 ; 11420101002)
语种: 英语
WOS记录号: WOS:000373741300037
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16186
Appears in Collections:星系中的恒星形成研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
2.Natl Radio Astron Observ, Charlottesville, VA 22904 USA
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China
6.Chinese Acad Sci, China Chile Joint Ctr Astron, Camino El Observ, 1515 Las Condes, Santiago, Chile
7.CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA
8.Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA
9.Univ Diego Portales, Fac Ingn, Nucleo Astron, Av Ejercito Libertador 441, Santiago, Chile
10.Univ Crete, Dept Phys, GR-71003 Iraklion, Greece
11.Natl Observ Athens, IAASARS, GR-15236 Penteli, Greece
12.CALTECH, Spitzer Sci Ctr, MS 220-6, Pasadena, CA 91125 USA
13.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
14.Shandong Univ Weihai, 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.Natl Opt Astron Observ, 950 North Cherry Ave, Tucson, AZ 85719 USA
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