Show simple item record

dc.contributor.authorTan, Qing-Hua
dc.contributor.authorGao, Yu
dc.contributor.authorZhang, Zhi-Yu
dc.contributor.authorGreve, Thomas R.
dc.contributor.authorJiang, Xue-Jian
dc.contributor.authorWilson, Christine D.
dc.contributor.authorYang, Chen-Tao
dc.contributor.authorBemis, Ashley
dc.contributor.authorChung, Aeree
dc.contributor.authorMatsushita, Satoki
dc.contributor.authorShi, Yong
dc.contributor.authorAo, Yi-Ping
dc.contributor.authorBrinks, Elias
dc.contributor.authorCurrie, Malcolm J.
dc.contributor.authorDavis, Timothy A.
dc.contributor.authorGrijs, Richard de
dc.contributor.authorHo, Luis C.
dc.contributor.authorImanishi, Masatoshi
dc.contributor.authorKohno, Kotaro
dc.contributor.authorLee, Bumhyun
dc.contributor.authorParsons, Harriet
dc.contributor.authorRawlings, Mark G.
dc.contributor.authorRigopoulou, Dimitra
dc.contributor.authorRosolowsky, Erik
dc.contributor.authorBulger, Joanna
dc.contributor.authorChen, Hao
dc.contributor.authorChapman, Scott C.
dc.contributor.authorEden, David
dc.contributor.authorGear, Walter K.
dc.contributor.authorGu, Qiu-Sheng
dc.contributor.authorHe, Jin-Hua
dc.contributor.authorJiao, Qian
dc.contributor.authorLiu, Dai-Zhong
dc.contributor.authorLiu, Li-Jie
dc.contributor.authorLi, Xiao-Hu
dc.contributor.authorMichalowski, Michal J.
dc.contributor.authorNguyen-Luong, Quang
dc.contributor.authorQiu, Jian-Jie
dc.contributor.authorSmith, Matthew W. L.
dc.contributor.authorViolino, Giulio
dc.contributor.authorWang, Jian-Fa
dc.contributor.authorWang, Jun-Feng
dc.contributor.authorWang, Jun-Zhi
dc.contributor.authorYeh, Sherry
dc.contributor.authorZhao, Ying-He
dc.contributor.authorZhu, Ming
dc.date.accessioned2018-07-05T16:03:59Z
dc.date.available2018-07-05T16:03:59Z
dc.date.issued2018-06-25
dc.identifier.citationTan , Q-H , Gao , Y , Zhang , Z-Y , Greve , T R , Jiang , X-J , Wilson , C D , Yang , C-T , Bemis , A , Chung , A , Matsushita , S , Shi , Y , Ao , Y-P , Brinks , E , Currie , M J , Davis , T A , Grijs , R D , Ho , L C , Imanishi , M , Kohno , K , Lee , B , Parsons , H , Rawlings , M G , Rigopoulou , D , Rosolowsky , E , Bulger , J , Chen , H , Chapman , S C , Eden , D , Gear , W K , Gu , Q-S , He , J-H , Jiao , Q , Liu , D-Z , Liu , L-J , Li , X-H , Michalowski , M J , Nguyen-Luong , Q , Qiu , J-J , Smith , M W L , Violino , G , Wang , J-F , Wang , J-F , Wang , J-Z , Yeh , S , Zhao , Y-H & Zhu , M 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 , vol 860 , no. 2 , 165 . DOI: 10.3847/1538-4357/aac512
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 13867922
dc.identifier.otherPURE UUID: 41360e06-6613-4733-909b-7f0fa8d65bfb
dc.identifier.otherArXiv: http://arxiv.org/abs/1805.05619v1
dc.identifier.otherScopus: 85049221000
dc.identifier.urihttp://hdl.handle.net/2299/20273
dc.descriptionThis is an author-created, un-copyedited version of an article published in The Astrophysical Journal. The Version of Record is available online at https://doi.org/10.3847/1538-4357/aac512.
dc.description.abstractWe 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 arcmin $\times$ 2 arcmin region at 14 arcsec (FWHM) resolution (corresponding to linear scales of ~ 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 the luminosity ratios of IR/HCN(4-3) and IR/HCO^+(4-3), which can be taken as a proxy for the efficiency of star formation in the dense molecular gas (SFE_dense), appears to be nearly independent of the dense-gas fraction (f_dense) for our sample of galaxies. The SFE of the total molecular gas (SFE_mol) is found to increase substantially with f_dense when combining our data with that 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 SFR as traced by L_IR, nor with the warm-dust temperature, for the different populations of galaxies.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.subjectgalaxies: ISM
dc.subjectgalaxies: star formation
dc.subjectinfrared: galaxies
dc.subjectISM: molecules
dc.subjectradio lines: galaxies
dc.titleThe 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=4-3en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2018-05-12
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/aac512
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeopenAccess


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record