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dc.contributor.authorLiu, Tie
dc.contributor.authorKim, Kee-Tae
dc.contributor.authorJuvela, Mika
dc.contributor.authorWang, Ke
dc.contributor.authorTatematsu, Ken'ichi
dc.contributor.authorFrancesco, James Di
dc.contributor.authorLiu, Sheng-Yuan
dc.contributor.authorWu, Yuefang
dc.contributor.authorThompson, Mark
dc.contributor.authorFuller, Gary
dc.contributor.authorEden, David
dc.contributor.authorLi, Di
dc.contributor.authorRistorcelli, I.
dc.contributor.authorcollaborations, TOP-SCOPE
dc.date.accessioned2018-05-24T16:53:16Z
dc.date.available2018-05-24T16:53:16Z
dc.date.issued2018-02-01
dc.identifier.citationLiu , T , Kim , K-T , Juvela , M , Wang , K , Tatematsu , K , Francesco , J D , Liu , S-Y , Wu , Y , Thompson , M , Fuller , G , Eden , D , Li , D , Ristorcelli , I & collaborations , TOP-SCOPE 2018 , ' The TOP-SCOPE survey of Planck Galactic Cold Clumps : Survey overview and results of an exemplar source, PGCC G26.53+0.17 ' , The Astrophysical Journal , vol. 234 , no. 2 , 28 . https://doi.org/10.3847/1538-4365/aaa3dd
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 13051311
dc.identifier.otherPURE UUID: c89af5d6-bf85-423b-9b96-cae18f8c9f1e
dc.identifier.otherArXiv: http://arxiv.org/abs/1711.04382v1
dc.identifier.otherScopus: 85042529579
dc.identifier.otherORCID: /0000-0001-5392-909X/work/54917666
dc.identifier.urihttp://hdl.handle.net/2299/20075
dc.descriptionThis is an author-created, un-copyedited version of an article accepted for published in The Astrophysical Journal. The Version of Record is available online at https://doi.org/10.3847/1538-4365/aaa3dd
dc.description.abstractThe low dust temperatures (<14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. "TOP-SCOPE" is a joint survey program targeting ∼2000 PGCCs in J = 1-0 transitions of CO isotopologues and ∼1000 PGCCs in 850 μm continuum emission. The objective of the "TOP-SCOPE" survey and the joint surveys (SMT 10 m, KVN 21 m, and NRO 45 m) is to statistically study the initial conditions occurring during star formation and the evolution of molecular clouds, across a wide range of environments. The observations, data analysis, and example science cases for these surveys are introduced with an exemplar source, PGCC G26.53+0.17 (G26), which is a filamentary infrared dark cloud (IRDC). The total mass, length, and mean line mass (M/L) of the G26 filament are ∼6200 M, ∼12 pc, and ∼500 Mpc-1, respectively. Ten massive clumps, including eight starless ones, are found along the filament. The most massive clump as a whole may still be in global collapse, while its denser part seems to be undergoing expansion owing to outflow feedback. The fragmentation in the G26 filament from cloud scale to clump scale is in agreement with gravitational fragmentation of an isothermal, nonmagnetized, and turbulent supported cylinder. A bimodal behavior in dust emissivity spectral index (β) distribution is found in G26, suggesting grain growth along the filament. The G26 filament may be formed owing to large-scale compression flows evidenced by the temperature and velocity gradients across its natal cloud.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectISM: abundances
dc.subjectISM: clouds
dc.subjectISM: kinematics and dynamics
dc.subjectstars: formation
dc.subjectsurveys
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleThe TOP-SCOPE survey of Planck Galactic Cold Clumps : Survey overview and results of an exemplar source, PGCC G26.53+0.17en
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85042529579&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4365/aaa3dd
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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