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dc.contributor.authorYoung, AK
dc.contributor.authorBate, MR
dc.contributor.authorHarries, TJ
dc.contributor.authorAcreman, DM
dc.date.accessioned2019-07-05T11:07:40Z
dc.date.issued2019-05-31
dc.description.abstractThe first stable object to develop in the low-mass star formation process has long been predicted to be the first hydrostatic core (FHSC). Despite much effort, it has still yet to be definitively observed in nature. More specific observational signatures are required to enable observers to distinguish the FHSC from young, faint, but more evolved protostars. Here we present synthetic spectral line observations for CO, SO, CS and HCO$^+$ that were calculated from radiation (magneto)hydrodynamical models, chemical modelling and Monte Carlo radiative transfer. HCO$^+$ $(1-0)$ and SO $(8_7 - 7_6)$ spectra of the FHSC show variations for observations at a low inclination which may allow a candidate FHSC to be distinguished from a more evolved object. We find that the FHSC outflow is unlikely to be detectable with ALMA, which would discount the observed sources with slow outflows that are currently identified as candidate FHSCs. We compare the results of simulated ALMA observations with observed candidate FHSCs and recommend Oph A SM1N and N6-mm as the most promising candidates to follow up.en_GB
dc.description.sponsorshipEuropean Commissionen_GB
dc.identifier.citationVol. 487 (2), pp. 2853–2873en_GB
dc.identifier.doi10.1093/mnras/stz1485
dc.identifier.grantnumber339248en_GB
dc.identifier.urihttp://hdl.handle.net/10871/37860
dc.language.isoenen_GB
dc.publisherOxford University Press (OUP) / Royal Astronomical Societyen_GB
dc.rights© 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserveden_GB
dc.subjectastrochemistryen_GB
dc.subjecthydrodynamicsen_GB
dc.subjectradiative transferen_GB
dc.subjectstars: formationen_GB
dc.titleSynthetic molecular line observations of the first hydrostatic core from chemical calculationsen_GB
dc.typeArticleen_GB
dc.date.available2019-07-05T11:07:40Z
dc.descriptionThis is the final version. Available from OUP via the DOI in this recorden_GB
dc.identifier.eissn1365-2966
dc.identifier.journalMonthly Notices of the Royal Astronomical Societyen_GB
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserveden_GB
dcterms.dateAccepted2019-05-23
exeter.funder::European Commissionen_GB
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2019-05-23
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2019-07-05T11:05:38Z
refterms.versionFCDVoR
refterms.dateFOA2019-07-05T11:07:45Z
refterms.panelBen_GB


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