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STAR FORMATION LAWS IN BOTH GALACTIC MASSIVE CLUMPS AND EXTERNAL GALAXIES: EXTENSIVE STUDY WITH DUST CONINUUM, HCN (4-3), AND CS (7-6)
Liu, Tie1; Kim, Kee-Tae1; Yoo, Hyunju1,2; Liu, Sheng-Yuan3; Tatematsu, Ken'ichi4; Qin, Sheng-Li5,6; Zhang, Qizhou7; Wu, Yuefang8; Wang, Ke9; Goldsmith, Paul F.10; Juvela, Mika11; Lee, Jeong-Eun12; Toth, L. Viktor13; Mardones, Diego14; Garay, Guido14; Bronfman, Leonardo14; Cunningham, Maria R.15; Li, Di16,17; Lo, Nadia14; Ristorcelli, Isabelle18; Schnee, Scott19
2016-10-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume829Issue:2
AbstractWe observed 146 Galactic clumps in HCN (4-3) and CS (7-6) with the Atacama Submillimeter Telescope Experiment 10 m telescope. A tight linear relationship between star formation rate and gas mass traced by dust continuum emission was found for both Galactic clumps and the high redshift (z > 1) star forming galaxies (SFGs), indicating a constant gas depletion time of similar to 100 Myr for molecular gas in both Galactic clumps and high z SFGs. However, low z galaxies do not follow this relation and seem to have a longer global gas depletion time. The correlations between total infrared luminosities (L-TIR) and molecular line luminosities (L-mol') of HCN (4-3) and CS (7-6) are tight and sublinear extending down to clumps with L-TIR similar to 10(3) L-circle dot. These correlations become linear when extended to external galaxies. A bimodal behavior in the L-TIR-L-mol' correlations was found for clumps with different dust temperature, luminosity-to-mass ratio, and sigma(line)/sigma(vir). Such bimodal behavior may be due to evolutionary effects. The slopes of L-TIR-L-mol' correlations become more shallow as clumps evolve. We compared our results with lower J transition lines in Wu et al. (2010). The correlations between clump masses and line luminosities are close to linear for low effective excitation density tracers but become sublinear for high effective excitation density tracers for clumps with L-TIR larger than L-TIR similar to 10(4.5) L-circle dot. High effective excitation density tracers cannot linearly trace the total clump masses, leading to a sublinear correlations for both M-clump-L-mol' and L-TIR-L-mol' relations.
KeywordGalaxies: Evolution Galaxies: Ism Ism: Kinematics And Dynamics Stars: Formation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3847/0004-637X/829/2/59
WOS KeywordULTRALUMINOUS INFRARED GALAXIES ; DENSE GAS TRACERS ; HIGH-J CO ; MOLECULAR CLOUDS ; FORMING REGIONS ; COMPLETE SAMPLE ; FORMATION RATES ; MILKY-WAY ; LUMINOSITY ; CONTINUUM
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000385377200001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23604
Collection中国科学院紫金山天文台
Corresponding AuthorLiu, Tie
Affiliation1.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea
2.Chungnam Natl Univ, Dept Astron & Space Sci, Daejeon, South Korea
3.Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 106, Taiwan
4.Natl Astron Observ Japan, Natl Inst Nat Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
5.Yunnan Univ, Dept Astron, Kunming 650091, Peoples R China
6.Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Peoples R China
7.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
8.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
9.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
10.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
11.Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland
12.Kyung Hee Univ, Sch Space Res, Yongin 446701, Gyeonggi Do, South Korea
13.Eotvos Lorand Univ, Dept Astron, Pazmany Peter Setany 1, H-1117 Budapest, Hungary
14.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile
15.Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia
16.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
17.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
18.Univ Toulouse 3, IRAP, CNRS, UMR5277, 9 Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France
19.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA
Recommended Citation
GB/T 7714
Liu, Tie,Kim, Kee-Tae,Yoo, Hyunju,et al. STAR FORMATION LAWS IN BOTH GALACTIC MASSIVE CLUMPS AND EXTERNAL GALAXIES: EXTENSIVE STUDY WITH DUST CONINUUM, HCN (4-3), AND CS (7-6)[J]. ASTROPHYSICAL JOURNAL,2016,829(2).
APA Liu, Tie.,Kim, Kee-Tae.,Yoo, Hyunju.,Liu, Sheng-Yuan.,Tatematsu, Ken'ichi.,...&Schnee, Scott.(2016).STAR FORMATION LAWS IN BOTH GALACTIC MASSIVE CLUMPS AND EXTERNAL GALAXIES: EXTENSIVE STUDY WITH DUST CONINUUM, HCN (4-3), AND CS (7-6).ASTROPHYSICAL JOURNAL,829(2).
MLA Liu, Tie,et al."STAR FORMATION LAWS IN BOTH GALACTIC MASSIVE CLUMPS AND EXTERNAL GALAXIES: EXTENSIVE STUDY WITH DUST CONINUUM, HCN (4-3), AND CS (7-6)".ASTROPHYSICAL JOURNAL 829.2(2016).
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