Observations and radiative transfer modelling of a massive dense cold core in G333
Cold massive cores are one of the earliest manifestations of high-mass star formation. Following the detection of SiO emission from G333.125-0.562, a cold massive core, further investigations of the physics, chemistry and dynamics of this object has been carried out. Mopra and NANTEN2 molecular line...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Oxford University Press
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/62498 |
| _version_ | 1848760862690508800 |
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| author | Lo, N. Redman, M. Jones, P. Cunningham, M. Chhetri, Rajan Bains, I. Burton, M. |
| author_facet | Lo, N. Redman, M. Jones, P. Cunningham, M. Chhetri, Rajan Bains, I. Burton, M. |
| author_sort | Lo, N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Cold massive cores are one of the earliest manifestations of high-mass star formation. Following the detection of SiO emission from G333.125-0.562, a cold massive core, further investigations of the physics, chemistry and dynamics of this object has been carried out. Mopra and NANTEN2 molecular line profile observations, Australia Telescope Compact Array (ATCA) line and continuum emission maps and Spitzer 24 and 70µm images were obtained. These new data further constrain the properties of this prime example of the very early stages of high-mass star formation. A model for the source was constructed and compared directly with the molecular line data using a 3D molecular line transfer code -mollie. The ATCA data reveal that G333.125-0.562 is composed of two sources. One of the source is responsible for the previously detected molecular outflow and is detected in the Spitzer 24 and 70µm band data. Turbulent velocity widths are lower than other more active regions of G333 which reflects the younger evolutionary stage and/or lower mass of this core. The molecular line modelling requires abundances of the CO isotopes that strongly imply heavy depletion due to freeze-out of this species on to dust grains. The principal cloud is cold, moderately turbulent and possesses an outflow which indicates the presence of a central driving source. The secondary source could be an even less evolved object as no apparent associations with continuum emissions at (far-)infrared wavelengths. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. |
| first_indexed | 2025-11-14T10:22:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-62498 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:22:31Z |
| publishDate | 2011 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-624982018-02-01T05:57:47Z Observations and radiative transfer modelling of a massive dense cold core in G333 Lo, N. Redman, M. Jones, P. Cunningham, M. Chhetri, Rajan Bains, I. Burton, M. Cold massive cores are one of the earliest manifestations of high-mass star formation. Following the detection of SiO emission from G333.125-0.562, a cold massive core, further investigations of the physics, chemistry and dynamics of this object has been carried out. Mopra and NANTEN2 molecular line profile observations, Australia Telescope Compact Array (ATCA) line and continuum emission maps and Spitzer 24 and 70µm images were obtained. These new data further constrain the properties of this prime example of the very early stages of high-mass star formation. A model for the source was constructed and compared directly with the molecular line data using a 3D molecular line transfer code -mollie. The ATCA data reveal that G333.125-0.562 is composed of two sources. One of the source is responsible for the previously detected molecular outflow and is detected in the Spitzer 24 and 70µm band data. Turbulent velocity widths are lower than other more active regions of G333 which reflects the younger evolutionary stage and/or lower mass of this core. The molecular line modelling requires abundances of the CO isotopes that strongly imply heavy depletion due to freeze-out of this species on to dust grains. The principal cloud is cold, moderately turbulent and possesses an outflow which indicates the presence of a central driving source. The secondary source could be an even less evolved object as no apparent associations with continuum emissions at (far-)infrared wavelengths. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. 2011 Journal Article http://hdl.handle.net/20.500.11937/62498 10.1111/j.1365-2966.2011.18726.x Oxford University Press unknown |
| spellingShingle | Lo, N. Redman, M. Jones, P. Cunningham, M. Chhetri, Rajan Bains, I. Burton, M. Observations and radiative transfer modelling of a massive dense cold core in G333 |
| title | Observations and radiative transfer modelling of a massive dense cold core in G333 |
| title_full | Observations and radiative transfer modelling of a massive dense cold core in G333 |
| title_fullStr | Observations and radiative transfer modelling of a massive dense cold core in G333 |
| title_full_unstemmed | Observations and radiative transfer modelling of a massive dense cold core in G333 |
| title_short | Observations and radiative transfer modelling of a massive dense cold core in G333 |
| title_sort | observations and radiative transfer modelling of a massive dense cold core in g333 |
| url | http://hdl.handle.net/20.500.11937/62498 |