NAOC Open IR
A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z=1.5 and 2.2 from ALMA and HiZELS
Cheng, Cheng1,2,3; Ibar, Edo3; Smail, Ian4; Molina, Juan5; Sobral, David6; Escala, Andres7; Best, Philip8; Cochrane, Rachel8,9; Gillman, Steven4; Swinbank, Mark4,10; Ivison, R. J.11; Huang, Jia-Sheng1,2; Hughes, Thomas M.1,3,12,13; Villard, Eric14; Cirasuolo, Michele11
2020-12-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume499Issue:4Pages:5241-5256
AbstractWe present Atacama Large Millimeter/Submillimeter Array (ALMA) continuum observations of a sample of nine star-forming galaxies at redshifts 1.47 and 2.23 selected from the High-z Emission Line Survey (HiZELS). Four galaxies in our sample are detected at high significance by ALMA at a resolution of 0 ''.25 at rest-frame 355 mu m. Together with the previously observed H alpha emission, from adaptive optics-assisted integral-field-unit spectroscopy (similar to 0 ''.15 resolution), and F606W and F140W imaging from the Hubble Space Telescope (similar to 0 ''.2 resolution), we study the star formation activity, stellar and dust mass in these high-redshift galaxies at similar to kpc-scale resolution. We find that ALMA detection rates are higher for more massive galaxies (M-* > 10(10.5) M-circle dot) and higher [N II]/H alpha ratios (>0.25, a proxy for gas-phase metallicity). The dust extends out to a radius of 8 kpc, with a smooth structure, even for those galaxies presenting clumpy H alpha morphologies. The half-light radii (R-dust) derived for the detected galaxies are of the order similar to 4.5 kpc, more than twice the size of submillimetre-selected galaxies at a similar redshift. Our global star formation rate estimates - from far-infrared and extinction-corrected H alpha luminosities - are in good agreement. However, the different morphologies of the different phases of the interstellar medium suggest complex extinction properties of the high-redshift normal galaxies.
Keywordgalaxies: ISM galaxies: starburst galaxies: star formation submillimetre: galaxies
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA
DOI10.1093/mnras/staa3036
WOS KeywordINTEGRAL FIELD SPECTROSCOPY ; H-ALPHA EMITTERS ; SIMILAR-TO 2 ; FORMING GALAXIES ; STELLAR MASS ; NEARBY GALAXIES ; METALLICITY GRADIENTS ; PHYSICAL-PROPERTIES ; INTERSTELLAR-MEDIUM ; MERGER RATES
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0402704] ; National Key R&D Program of China[2016YFA0400702] ; National Natural Science Foundation of China (NSFC)[11803044] ; National Natural Science Foundation of China (NSFC)[11673028] ; NSFC[11933003] ; FONDECYT[1171710] ; Science and Technology Facilities Council[ST/N50404X/1] ; Science and Technology Facilities Council[ST/L00075X/1] ; STFC[ST/T000244/1] ; STFC[ST/R000972/1] ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China[11721303] ; National Science Foundation of China[11991052] ; Center of Excellence in Astrophysics and Associated Technologies[AFB-170002] ; FONDECYT Regular Grant[1181663] ; NASA[NAS 5-26555]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; FONDECYT ; FONDECYT ; Science and Technology Facilities Council ; Science and Technology Facilities Council ; STFC ; STFC ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Science Foundation of China ; National Science Foundation of China ; Center of Excellence in Astrophysics and Associated Technologies ; Center of Excellence in Astrophysics and Associated Technologies ; FONDECYT Regular Grant ; FONDECYT Regular Grant ; NASA ; NASA
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000599131700045
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80312
Collection中国科学院国家天文台
Corresponding AuthorCheng, Cheng; Ibar, Edo
Affiliation1.Chinese Acad Sci, Natl Astron Observ, South Amer Ctr Astron, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
3.Univ Valparaiso, Inst Fis & Astron, Avda Gran Bretana 1111, Valparaiso, Chile
4.Univ Durham, Ctr Extragalact Astron, South Rd, Durham DH1 3LE, England
5.Peking Univ, Kavli Inst Astron & Astrophys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
6.Univ Lancaster, Dept Phys, Lancaster LA1 4BY, England
7.Univ Chile, Dept Astron DAS, Casilla 36-D, Santiago, Chile
8.Inst Astron, Royal Observ, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland
9.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
10.Univ Durham, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England
11.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
12.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
13.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
14.Joint ALMA Observ ESO, Ave Alonso Cordova 3107, Santiago, Chile
Recommended Citation
GB/T 7714
Cheng, Cheng,Ibar, Edo,Smail, Ian,et al. A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z=1.5 and 2.2 from ALMA and HiZELS[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,499(4):5241-5256.
APA Cheng, Cheng.,Ibar, Edo.,Smail, Ian.,Molina, Juan.,Sobral, David.,...&Cirasuolo, Michele.(2020).A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z=1.5 and 2.2 from ALMA and HiZELS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,499(4),5241-5256.
MLA Cheng, Cheng,et al."A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z=1.5 and 2.2 from ALMA and HiZELS".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 499.4(2020):5241-5256.
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