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dc.contributor.authorUrquhart, J. S.
dc.contributor.authorFigura, C.
dc.contributor.authorWyrowski, F.
dc.contributor.authorGiannetti, A.
dc.contributor.authorKim, W. -J.
dc.contributor.authorWienen, M.
dc.contributor.authorLeurini, S.
dc.contributor.authorPillai, T.
dc.contributor.authorCsengeri, T.
dc.contributor.authorGibson, S. J.
dc.contributor.authorMenten, K.
dc.contributor.authorMoore, T. J. T.
dc.contributor.authorThompson, M. A.
dc.date.accessioned2019-02-06T17:30:01Z
dc.date.available2019-02-06T17:30:01Z
dc.date.issued2019-04-21
dc.identifier.citationUrquhart , J S , Figura , C , Wyrowski , F , Giannetti , A , Kim , W -J , Wienen , M , Leurini , S , Pillai , T , Csengeri , T , Gibson , S J , Menten , K , Moore , T J T & Thompson , M A 2019 , ' ATLASGAL --- Molecular fingerprints of a sample of massive star forming clumps ' , Monthly Notices of the Royal Astronomical Society , vol. 484 , no. 4 , pp. 4444-4470 . https://doi.org/10.1093/mnras/stz154
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 16241176
dc.identifier.otherPURE UUID: ea6f257b-ce4e-4b59-8115-b874e2eb089d
dc.identifier.otherArXiv: http://arxiv.org/abs/1901.03759v1
dc.identifier.otherScopus: 85062262886
dc.identifier.otherORCID: /0000-0001-5392-909X/work/54917665
dc.identifier.urihttp://hdl.handle.net/2299/21040
dc.descriptionAccepted for publication in MNRAS; consists of 28 pages, 22 figures and 10 tables. For full versions of Tables 1, 5 and 10 will only be available via CDS. © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
dc.description.abstractWe have conducted a 3-mm molecular-line survey towards 570 high-mass star-forming clumps, using the Mopra telescope. The sample is selected from the 10 000 clumps identified by the ATLASGAL (APEX Telescope Large Area Survey of the Galaxy) survey and includes all of the most important embedded evolutionary stages associated with massive star formation, classified into five distinct categories (quiescent, protostellar, young stellar objects, H ii regions, and photon-dominated regions). The observations were performed in broad-band mode with frequency coverage of 85.2-93.4 GHz and a velocity resolution of 1/40.9 km s '1, detecting emission from 26 different transitions. We find significant evolutionary trends in the detection rates, integrated line intensities, and abundances of many of the transitions and also identify a couple of molecules that appear to be invariant to changes in the dust temperature and evolutionary stage [N 2 H + (1-0) and HN 13 C (1-0)]. We use the K-ladders for CH 3 C 2 H (5-4) and CH 3 CH (5-4) to calculate the rotation temperatures and find around one-third of the quiescent clumps have rotation temperatures that suggest the presence of an internal heating source. These sources may constitute a population of very young protostellar objects that are still dark at 70 mum and suggest that the fraction of truly quiescent clumps may only be a few per cent. We also identify a number of line ratios that show a strong correlation with the evolutionary stage of the embedded objects and discuss their utility as diagnostic probes of evolution.en
dc.format.extent27
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subject(ISM:) abundances
dc.subjectISM: clouds
dc.subjectISM: molecules
dc.subjectstars: early-type
dc.subjectstars: formation
dc.subjectsubmillimetre: ISM
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleATLASGAL --- Molecular fingerprints of a sample of massive star forming clumpsen
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=85062262886&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stz154
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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