PMO OpenIR  > 星系中的恒星形成研究团组
ALMA OBSERVATIONS OF WARM MOLECULAR GAS AND COLD DUST IN NGC 34
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; Meijerink, R.5; Zhao, Y. -H.1,4; Appleton, P.1; Armus, L.1; Charmandaris, V.10,11,12; Lord, S.1; Murphy, E. J.1; Sanders, D. B.; Schulz, B.1; Stierwalt, S.6,13
2014-05-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume787Issue:1Pages:0
AbstractWe 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.
KeywordGalaxies: Active Galaxies: Evolution Galaxies: General Galaxies: Interactions Galaxies: Starburst Galaxies: Seyfert Submillimeter: Galaxies
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/787/1/48
WOS KeywordLUMINOUS INFRARED GALAXIES ; SPECTRAL ENERGY-DISTRIBUTION ; ACTIVE GALACTIC NUCLEI ; STAR-FORMING GALAXIES ; INTERSTELLAR-MEDIUM ; COMPACT STARBURSTS ; ELLIPTIC GALAXIES ; ANTENNAE GALAXIES ; SEYFERT-GALAXIES ; NEARBY GALAXIES
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Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000335924200048
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10695
Collection星系中的恒星形成研究团组
Affiliation1.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
11.Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, GR-15236 Penteli, Greece
12.Observ Paris, Chercheur Associe, F-75014 Paris, France
13.CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA
Recommended Citation
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.
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