Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35
We present the results of a new study of the molecular gas associated with the 'extended green object' (EGO) G35.03+0.35. This object, very likely a massive young stellar object, is embedded in a molecular cloud at the border of an Hii region. The observations were performed with the Ataca...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00358711_v419_n3_p2206_Paron |
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todo:paper_00358711_v419_n3_p2206_Paron2023-10-03T14:47:02Z Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Giacani, E. Dubner, G. Hii regions ISM: clouds ISM: jets and outflows We present the results of a new study of the molecular gas associated with the 'extended green object' (EGO) G35.03+0.35. This object, very likely a massive young stellar object, is embedded in a molecular cloud at the border of an Hii region. The observations were performed with the Atacama Submillimeter Telescope Experiment in the 12CO and 13CO J= 3-2, HCO +J= 4-3 and CS J= 7-6 lines with an angular resolution of about 22arcsec. From the 12CO J= 3-2 line, we discovered outflowing activity of the massive young stellar object. We obtained a total mass and kinetic energy for the outflows of 30 and 3000M ⊙ (kms -1) 2 (6 × 10 46 erg), respectively. We discovered an HCO + and CS clump towards the EGO G35.03+0.35. The detection of these molecular species supports the presence of molecular outflows and a dense molecular envelope with temperatures and densities above 40K and 6 × 10 6cm -3, respectively. Using public near- and mid-infrared and submillimetre data, we investigated the spectral energy distribution confirming that EGO G35.03+0.35 is a massive young stellar object at its earliest evolutionary stage (i.e. a class I young stellar object). By analysing radio-continuum archival data, we found three radio sources towards the object, suggesting the presence of several young stellar objects in the region. Our radio-continuum analysis is consistent with the presence of at least one ultracompact Hii region and a hypercompact Hii region or a constant-velocity ionized wind source. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00358711_v419_n3_p2206_Paron |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Hii regions ISM: clouds ISM: jets and outflows |
| spellingShingle |
Hii regions ISM: clouds ISM: jets and outflows Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Giacani, E. Dubner, G. Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 |
| topic_facet |
Hii regions ISM: clouds ISM: jets and outflows |
| description |
We present the results of a new study of the molecular gas associated with the 'extended green object' (EGO) G35.03+0.35. This object, very likely a massive young stellar object, is embedded in a molecular cloud at the border of an Hii region. The observations were performed with the Atacama Submillimeter Telescope Experiment in the 12CO and 13CO J= 3-2, HCO +J= 4-3 and CS J= 7-6 lines with an angular resolution of about 22arcsec. From the 12CO J= 3-2 line, we discovered outflowing activity of the massive young stellar object. We obtained a total mass and kinetic energy for the outflows of 30 and 3000M ⊙ (kms -1) 2 (6 × 10 46 erg), respectively. We discovered an HCO + and CS clump towards the EGO G35.03+0.35. The detection of these molecular species supports the presence of molecular outflows and a dense molecular envelope with temperatures and densities above 40K and 6 × 10 6cm -3, respectively. Using public near- and mid-infrared and submillimetre data, we investigated the spectral energy distribution confirming that EGO G35.03+0.35 is a massive young stellar object at its earliest evolutionary stage (i.e. a class I young stellar object). By analysing radio-continuum archival data, we found three radio sources towards the object, suggesting the presence of several young stellar objects in the region. Our radio-continuum analysis is consistent with the presence of at least one ultracompact Hii region and a hypercompact Hii region or a constant-velocity ionized wind source. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. |
| format |
JOUR |
| author |
Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Giacani, E. Dubner, G. |
| author_facet |
Paron, S. Ortega, M.E. Petriella, A. Rubio, M. Giacani, E. Dubner, G. |
| author_sort |
Paron, S. |
| title |
Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 |
| title_short |
Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 |
| title_full |
Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 |
| title_fullStr |
Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 |
| title_full_unstemmed |
Study of the dense molecular gas surrounding the 'extended green object' G35.03+0.35 |
| title_sort |
study of the dense molecular gas surrounding the 'extended green object' g35.03+0.35 |
| url |
http://hdl.handle.net/20.500.12110/paper_00358711_v419_n3_p2206_Paron |
| work_keys_str_mv |
AT parons studyofthedensemoleculargassurroundingtheextendedgreenobjectg3503035 AT ortegame studyofthedensemoleculargassurroundingtheextendedgreenobjectg3503035 AT petriellaa studyofthedensemoleculargassurroundingtheextendedgreenobjectg3503035 AT rubiom studyofthedensemoleculargassurroundingtheextendedgreenobjectg3503035 AT giacanie studyofthedensemoleculargassurroundingtheextendedgreenobjectg3503035 AT dubnerg studyofthedensemoleculargassurroundingtheextendedgreenobjectg3503035 |
| _version_ |
1807322098833555456 |