The MALATANG Survey: The L-GAS-L-IR Correlation on Sub-kiloparsec Scale in Six Nearby Star-forming Galaxies as Traced by HCN J=4 -> 3 and HCO+ J=4 -> 3
文献类型:期刊论文
作者 | Tan,Qing-Hua1; Gao,Yu1; Zhang,Zhi-Yu2,3; Greve,Thomas R.4; Jiang,Xue-Jian1; Wilson,Christine D.5; Yang,Chen-Tao1,6,7; Bemis,Ashley5; Chung,Aeree8; Matsushita,Satoki9 |
刊名 | The Astrophysical Journal |
出版日期 | 2018-06-20 |
卷号 | 860期号:2 |
ISSN号 | 0004-637X |
关键词 | galaxies: ISM galaxies: star formation infrared: galaxies ISM: molecules radio lines: galaxies |
DOI | 10.3847/1538-4357/aac512 |
产权排序 | 第39完成单位 |
文献子类 | Article |
英文摘要 | We present HCN J = 4 -> 3 and HCO+ J = 4 -> 3 maps of six nearby star-forming galaxies, NGC 253, NGC 1068, IC 342, M82, M83, and NGC 6946, obtained with the James Clerk Maxwell Telescope as part of the MALATANG survey. All galaxies were mapped in the central 2' x 2' region at 14 '' (FWHM) resolution (corresponding to linear scales of similar to 0.2-1.0 kpc). The L-IR-L'(dense) relation, where the dense gas is traced by the HCN J = 4 -> 3 and the HCO+ J = 4 -> 3 emission, measured in our sample of spatially resolved galaxies is found to follow the linear correlation established globally in galaxies within the scatter. We find that the luminosity ratio, L-IR/L'(dense), shows systematic variations with L-IR within individual spatially resolved galaxies, whereas the galaxy-integrated ratios vary little. A rising trend is also found between L-IR/L'(dense) ratio and the warm-dust temperature gauged by the 70 mu m/100 mu m flux ratio. We find that the luminosity ratios of IR/HCN (4-3) and IR/HCO+ (4-3), which can be taken as a proxy for the star formation efficiency (SFE) in the dense molecular gas (SFEdense), appear to be nearly independent of the dense gas fraction (f(dense)) for our sample of galaxies. The SFE of the total molecular gas (SFEmol) is found to increase substantially with f(dense) when combining our data with those on local (ultra) luminous infrared galaxies and high-z quasars. The mean L'(HCN(4-3))/L'(HCO+(4-3)) line ratio measured for the six targeted galaxies is 0.9 +/- 0.6. No significant correlation is found for the L'(HCN(4-3)) L'(HCO+(4-3)) ratio with the star formation rate as traced by L-IR, nor with the warm-dust temperature, for the different populations of galaxies. |
学科主题 | 天文学 ; 星系与宇宙学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | DENSE MOLECULAR GAS ; ULTRALUMINOUS INFRARED GALAXIES ; ACTIVE GALACTIC NUCLEUS ; HIGH-REDSHIFT GALAXIES ; STARBURST GALAXIES ; SPIRAL GALAXIES ; FORMATION EFFICIENCY ; INTERSTELLAR-MEDIUM ; CLOVERLEAF QUASAR ; APM 08279+5255 |
资助项目 | National Key R&D Program of China[2017YFA0402700] ; National Key R&D Program of China[2017YFA0402704] ; National Key R&D Program of China[2016YFA0400702] ; Science and Technology Facilities Council of the United Kingdom ; JCMT Large Program[M16AL007] ; NSFC[11420101002] ; NSFC[11603075] ; NSFC[11721303] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH008] ; National Research Foundation of Korea[2015R1D1A1A01060516] ; Center for Galaxy Evolution Research[2010-0027910] ; Natural Sciences and Engineering Research Council of Canada ; ERC[321302] ; UK Science and Technology Facilities Council[ST/M001008/1] ; National Science Centre, Poland, through the POLONEZ[2015/19/P/ST9/04010] ; European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant[665778] ; Ministry of Science and Technology (MoST) of Taiwan[MoST 103-2112-M-001-032-MY3] ; Ministry of Science and Technology (MoST) of Taiwan[MoST 106-2112-M-001-011] ; STFC ; National Natural Science Foundation of China[U1631237] ; Yunnan Province of China[2017HC018] ; CAS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000436388600009 |
资助机构 | National Key R&D Program of China[2017YFA0402700, 2017YFA0402704, 2016YFA0400702] ; Science and Technology Facilities Council of the United Kingdom ; JCMT Large Program[M16AL007] ; NSFC[11420101002, 11603075, 11721303] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH008] ; National Research Foundation of Korea[2015R1D1A1A01060516] ; Center for Galaxy Evolution Research[2010-0027910] ; Natural Sciences and Engineering Research Council of Canada ; ERC[321302] ; UK Science and Technology Facilities Council[ST/M001008/1] ; National Science Centre, Poland, through the POLONEZ[2015/19/P/ST9/04010] ; European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant[665778] ; Ministry of Science and Technology (MoST) of Taiwan[MoST 103-2112-M-001-032-MY3, MoST 106-2112-M-001-011] ; STFC ; National Natural Science Foundation of China[U1631237] ; Yunnan Province of China[2017HC018] ; CAS |
源URL | [http://ir.ynao.ac.cn/handle/114a53/18652] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
作者单位 | 1.Purple Mountain Observatory & Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, 8 Yuanhua Road, Nanjing 210034, People’s Republic of China; qhtan@pmo.ac.cn, yugao@pmo.ac.cn 2.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK 3.ESO, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany 4.Department of Physics and Astronomy, University College London, Gower Street, London WC1E6BT, UK 5.Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada 6.Institut d’Astrophysique Spatiale, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Bāt. 121, F-91405, Orsay Cedex, France 7.European Southern Observatory, Alonso de Córdova 3107, Casilla 19001, Vitacura, Santiago, Chile 8.Department of Astronomy, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea 9.Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan 10.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People’s Republic of China |
推荐引用方式 GB/T 7714 | Tan,Qing-Hua,Gao,Yu,Zhang,Zhi-Yu,et al. The MALATANG Survey: The L-GAS-L-IR Correlation on Sub-kiloparsec Scale in Six Nearby Star-forming Galaxies as Traced by HCN J=4 -> 3 and HCO+ J=4 -> 3[J]. The Astrophysical Journal,2018,860(2). |
APA | Tan,Qing-Hua.,Gao,Yu.,Zhang,Zhi-Yu.,Greve,Thomas R..,Jiang,Xue-Jian.,...&Zhu,Ming.(2018).The MALATANG Survey: The L-GAS-L-IR Correlation on Sub-kiloparsec Scale in Six Nearby Star-forming Galaxies as Traced by HCN J=4 -> 3 and HCO+ J=4 -> 3.The Astrophysical Journal,860(2). |
MLA | Tan,Qing-Hua,et al."The MALATANG Survey: The L-GAS-L-IR Correlation on Sub-kiloparsec Scale in Six Nearby Star-forming Galaxies as Traced by HCN J=4 -> 3 and HCO+ J=4 -> 3".The Astrophysical Journal 860.2(2018). |
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来源:云南天文台
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