ALMA OBSERVATIONS OF WARM MOLECULAR GAS AND COLD DUST IN NGC 34
文献类型：期刊论文
| 作者 | Xu, C. K.1; Cao, C.1,2,3; Lu, N.1; Gao, Y.4 ; van der Werf, P.5; Evans, A. S.6,7; Mazzarella, J. M.1; Chu, J.8; Haan, S.9; Diaz-Santos, T.1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2014-05-20 |
| 卷号 | 787期号:1页码:0 |
| 关键词 | galaxies: active galaxies: evolution galaxies: general galaxies: interactions galaxies: starburst galaxies: Seyfert submillimeter: galaxies |
| ISSN号 | 0004-637X |
| 英文摘要 | We present Atacama Large Millimeter Array (ALMA) Cycle-0 observations of the CO (6-5) line emission (rest-frame frequency = 691.473 GHz) and of the 435 mu m dust continuum emission in the nuclear region of NGC 34, a local luminous infrared galaxy at a distance of 84 Mpc (1 '' = 407 pc) which contains a Seyfert 2 active galactic nucleus (AGN) and a nuclear starburst. The CO emission is well resolved by the ALMA beam (0.'' 26x 0.'' 23), with an integrated flux of fCO(6-5) = 1004 (+/- 151) Jy km s-1. Both the morphology and kinematics of the CO (6-5) emission are rather regular, consistent with a compact rotating disk with a size of 200 pc. A significant emission feature is detected on the redshifted wing of the line profile at the frequency of the (HCN)-C-13 (8-7) line, with an integrated flux of 17.7 +/- 2.1(random) +/- 2.7(systematic) Jy km s(-1). However, it cannot be ruled out that the feature is due to an outflow of warm dense gas with a mean velocity of 400 km s(-1). The continuum is resolved into an elongated configuration, and the observed flux corresponds to a dustmass ofM(dust) = 10(6.97 +/- 0.13) M circle dot. An unresolved central core (radius +/- 50 pc) contributes 28% of the continuum flux and 19% of the CO (6-5) flux, consistent with insignificant contributions of the AGN to both emissions. Both the CO (6-5) and continuum spatial distributions suggest a very high gas column density (>= 104 M circle dot pc (2)) in the nuclear region at radius <= 100 pc. |
| 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 ; SPECTRAL ENERGY-DISTRIBUTION ; ACTIVE GALACTIC NUCLEI ; STAR-FORMING GALAXIES ; INTERSTELLAR-MEDIUM ; COMPACT STARBURSTS ; ELLIPTIC GALAXIES ; ANTENNAE GALAXIES ; SEYFERT-GALAXIES ; NEARBY GALAXIES |
| 收录类别 | SCI |
| 原文出处 | 10.1088/0004-637X/787/1/48 |
| 语种 | 英语 |
| WOS记录号 | WOS:000335924200048 |
| 公开日期 | 2014-11-21 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10695]  |
| 专题 | 紫金山天文台_星系中的恒星形成研究团组 |
| 作者单位 | 1.CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA 2.Shandong Univ Weihai, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China 3.Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 5.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands 6.Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA 7.Natl Radio Astron Observ, Charlottesville, VA 22904 USA 8.Univ Hawaii, Inst Astron, Honolulu, HI 96816 USA 9.CSIRO Astron & Space Sci, ATNF, Epping, NSW 1710, Australia 10.Univ Crete, Dept Phys, GR-71003 Iraklion, Greece |
| 推荐引用方式 GB/T 7714 | Xu, C. K.,Cao, C.,Lu, N.,et al. ALMA OBSERVATIONS OF WARM MOLECULAR GAS AND COLD DUST IN NGC 34[J]. ASTROPHYSICAL JOURNAL,2014,787(1):0. |
| APA | Xu, C. K..,Cao, C..,Lu, N..,Gao, Y..,van der Werf, P..,...&Stierwalt, S..(2014).ALMA OBSERVATIONS OF WARM MOLECULAR GAS AND COLD DUST IN NGC 34.ASTROPHYSICAL JOURNAL,787(1),0. |
| MLA | Xu, C. K.,et al."ALMA OBSERVATIONS OF WARM MOLECULAR GAS AND COLD DUST IN NGC 34".ASTROPHYSICAL JOURNAL 787.1(2014):0. |
入库方式： OAI收割
来源：紫金山天文台
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