The molecular clump towards the eastern border of SNR G18.8+0.3
Aims. The eastern border of the SNR G18.8+0.3, close to an HII regions complex, is a very interesting region for studying the molecular gas that it is probably in contact with the supernova remnant (SNR) shock front. Methods. We observed this region using the Atacama Submillimeter Telescope Experime...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00046361_v547_n_p_Paron |
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todo:paper_00046361_v547_n_p_Paron2023-10-03T14:00:43Z The molecular clump towards the eastern border of SNR G18.8+0.3 Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Dubner, G. Giacani, E. ISM: clouds ISM: supernova remnants Stars: formation Angular resolution Archival data Atacama H II regions ISM : clouds ISM: supernova remnants Molecular clouds Molecular clumps Molecular gas Radio continuum Shock fronts Stars: formation Submillimeters Supernova remnants Young stellar objects Shock waves Stars Aims. The eastern border of the SNR G18.8+0.3, close to an HII regions complex, is a very interesting region for studying the molecular gas that it is probably in contact with the supernova remnant (SNR) shock front. Methods. We observed this region using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J = 3-2, 13CO J = 3-2, HCO +J = 4-3, and CS J = 7-6 lines with an angular resolution of 22′′. To complement these observations, we analyzed infrared, submillimeter, and radio continuum archival data. Results. In this work, we clearly show that the radio continuum "protrusion" that was earlier thought to belong to the SNR is an HII region complex that is deeply embedded in a molecular clump. The new molecular observations reveal that this dense clump, belonging to an extended molecular cloud that surrounds the SNR's southeast border, is not physically in contact with SNR G18.8+0.3, suggesting that the SNR shock front has not yet reached it or that they may be located at different distances. We found some young stellar objects embedded in the molecular clump, suggesting that their formation should be approximately coeval with the SN explosion. © 2012 ESO. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v547_n_p_Paron |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
ISM: clouds ISM: supernova remnants Stars: formation Angular resolution Archival data Atacama H II regions ISM : clouds ISM: supernova remnants Molecular clouds Molecular clumps Molecular gas Radio continuum Shock fronts Stars: formation Submillimeters Supernova remnants Young stellar objects Shock waves Stars |
| spellingShingle |
ISM: clouds ISM: supernova remnants Stars: formation Angular resolution Archival data Atacama H II regions ISM : clouds ISM: supernova remnants Molecular clouds Molecular clumps Molecular gas Radio continuum Shock fronts Stars: formation Submillimeters Supernova remnants Young stellar objects Shock waves Stars Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Dubner, G. Giacani, E. The molecular clump towards the eastern border of SNR G18.8+0.3 |
| topic_facet |
ISM: clouds ISM: supernova remnants Stars: formation Angular resolution Archival data Atacama H II regions ISM : clouds ISM: supernova remnants Molecular clouds Molecular clumps Molecular gas Radio continuum Shock fronts Stars: formation Submillimeters Supernova remnants Young stellar objects Shock waves Stars |
| description |
Aims. The eastern border of the SNR G18.8+0.3, close to an HII regions complex, is a very interesting region for studying the molecular gas that it is probably in contact with the supernova remnant (SNR) shock front. Methods. We observed this region using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J = 3-2, 13CO J = 3-2, HCO +J = 4-3, and CS J = 7-6 lines with an angular resolution of 22′′. To complement these observations, we analyzed infrared, submillimeter, and radio continuum archival data. Results. In this work, we clearly show that the radio continuum "protrusion" that was earlier thought to belong to the SNR is an HII region complex that is deeply embedded in a molecular clump. The new molecular observations reveal that this dense clump, belonging to an extended molecular cloud that surrounds the SNR's southeast border, is not physically in contact with SNR G18.8+0.3, suggesting that the SNR shock front has not yet reached it or that they may be located at different distances. We found some young stellar objects embedded in the molecular clump, suggesting that their formation should be approximately coeval with the SN explosion. © 2012 ESO. |
| format |
JOUR |
| author |
Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Dubner, G. Giacani, E. |
| author_facet |
Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Dubner, G. Giacani, E. |
| author_sort |
Paron, S. |
| title |
The molecular clump towards the eastern border of SNR G18.8+0.3 |
| title_short |
The molecular clump towards the eastern border of SNR G18.8+0.3 |
| title_full |
The molecular clump towards the eastern border of SNR G18.8+0.3 |
| title_fullStr |
The molecular clump towards the eastern border of SNR G18.8+0.3 |
| title_full_unstemmed |
The molecular clump towards the eastern border of SNR G18.8+0.3 |
| title_sort |
molecular clump towards the eastern border of snr g18.8+0.3 |
| url |
http://hdl.handle.net/20.500.12110/paper_00046361_v547_n_p_Paron |
| work_keys_str_mv |
AT parons themolecularclumptowardstheeasternborderofsnrg18803 AT ortegame themolecularclumptowardstheeasternborderofsnrg18803 AT petriellaa themolecularclumptowardstheeasternborderofsnrg18803 AT rubiom themolecularclumptowardstheeasternborderofsnrg18803 AT dubnerg themolecularclumptowardstheeasternborderofsnrg18803 AT giacanie themolecularclumptowardstheeasternborderofsnrg18803 AT parons molecularclumptowardstheeasternborderofsnrg18803 AT ortegame molecularclumptowardstheeasternborderofsnrg18803 AT petriellaa molecularclumptowardstheeasternborderofsnrg18803 AT rubiom molecularclumptowardstheeasternborderofsnrg18803 AT dubnerg molecularclumptowardstheeasternborderofsnrg18803 AT giacanie molecularclumptowardstheeasternborderofsnrg18803 |
| _version_ |
1807315570690883584 |