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ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130
Zhao YH(赵应和)1,2,3,4; Lu, Nanyao5,6,7; Xu, C. Kevin7; Gao, Yu3,4; 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
Source PublicationASTROPHYSICAL JOURNAL
2016-04-01
Volume820Issue:2
DOI10.3847/0004-637X/820/2/118
Contribution Rank第1完成单位
Indexed BySCI
KeywordGalaxies: Active Galaxies: Evolution Galaxies: Ism Galaxies: Nuclei Galaxies: Starburst Submillimeter: Galaxies
Abstract

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.

Funding ProjectNSFC[11173059] ; NSFC[11390373] ; NSFC[11420101002] ; CAS pilot-b program[XDB09000000]
Funding OrganizationNSFC[11173059, 11390373, 11420101002] ; CAS pilot-b program[XDB09000000]
Language英语
Subject Area天文学 ; 星系与宇宙学 ; 星系形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
Archive Date2016-05-10
WOS IDWOS:000373741300037
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordLUMINOUS INFRARED GALAXIES ; WARM MOLECULAR GAS ; STAR-FORMATION ; HERSCHEL-SPIRE ; STARBURST GALAXIES ; SEYFERT-GALAXIES ; SPECTROSCOPY ; DUST ; VIEW ; CATALOG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9580
Collection丽江天文观测站(南方基地)
Corresponding AuthorZhao YH(赵应和)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.National Radio Astronomy Observatory, Charlottesville, VA 22904, USA
3.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
4.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China
5.National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing 100012, China
6.China-Chile Joint Center for Astronomy, Chinese Academy of Sciences, Camino El Observatorio, 1515 Las Condes, Santiago, Chile
7.Infrared Processing and Analysis Center, California Institute of Technology 100-22, Pasadena, CA 91125, USA
8.Department of Astronomy, University of Virginia, 530 McCormick Road, Charlottesville, VA 22904, USA
9.Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército Libertador 441, Santiago, Chile
10.Department of Physics, University of Crete, GR-71003 Heraklion, Greece
11.IAASARS, National Observatory of Athens, GR-15236, Penteli, Greece
12.Spitzer Science Center, California Institute of Technology, MS 220-6, Pasadena, CA 91125, USA
13.Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands
14.School of Space Science and Physics, Shandong University at Weihai, Weihai, Shandong 264209, China
15.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Weihai, Shandong 264209, China
16.National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719, USA
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhao YH,Lu, Nanyao,Xu, C. Kevin,et al. ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130[J]. ASTROPHYSICAL JOURNAL,2016,820(2).
APA Zhao YH.,Lu, Nanyao.,Xu, C. Kevin.,Gao, Yu.,Barcos-Munoz, Loreto.,...&Murphy, Eric.(2016).ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130.ASTROPHYSICAL JOURNAL,820(2).
MLA Zhao YH,et al."ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130".ASTROPHYSICAL JOURNAL 820.2(2016).
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