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Authordc.contributor.authorLo, Nadia 
Authordc.contributor.authorCunningham, M. R. 
Authordc.contributor.authorJones, P. A. 
Authordc.contributor.authorBronfman Aguiló, Leonardo 
Authordc.contributor.authorCortes, P. C. 
Authordc.contributor.authorSimon, R. 
Authordc.contributor.authorLowe, V. 
Authordc.contributor.authorFissel, L. 
Authordc.contributor.authorNovak, G. 
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractWe present the first results of neutral carbon ([Ci] 3P1–3P0 at 492 GHz) and carbon monoxide (13CO, J = 1–0) mapping in the Vela Molecular Ridge cloud C (VMR-C) and the G333 giant molecular cloud complexes with the NANTEN2 and Mopra telescopes. For the four regions mapped in this work, we find that [Ci] has very similar spectral emission profiles to 13CO, with comparable line widths. We find that [C i] has an opacity of 0.1–1.3 across the mapped region while the [Ci]/13CO peak brightness temperature ratio is between 0.2 and 0.8. The [C i] column density is an order of magnitude lower than that of 13CO. The H2 column density derived from [Ci] is comparable to values obtained from 12CO. Our maps show that Ci is preferentially detected in gas with low temperatures (below 20 K), which possibly explains the comparable H2 column density calculated from both tracers (both Ci and 12CO underestimate column density), as a significant amount of the C i in the warmer gas is likely in the higher energy state transition ([C i] 3P2–3P1 at 810 GHz), and thus it is likely that observations of both the above [C i] transitions are needed in order to recover the total H2 column density.en_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectISM: atomsen_US
Keywordsdc.subjectISM: cloudsen_US
Keywordsdc.subjectISM: moleculesen_US
Keywordsdc.subjectstars: formationen_US
Títulodc.titleTracing H2 column density with atomic carbon (C i) and co isotopologsen_US
Document typedc.typeArtículo de revistaen_US

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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile