Studying the molecular ambient towards the young stellar object EGO G35.04-0.47

We are performing a systematic study of the interstellar medium around extended green objects (EGOs), likely massive young stellar objects driving outflows. EGO G35.04-0.47 is located towards a dark cloud at the north-western edge of an H ii region. Recently, H2 jets were discovered towards this sou...

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Autores principales:	Paron, Sergio Ariel, Ortega, Martin Eduardo
Publicado:	2014
Materias:	ISM: clouds ISM: H ii regions ISM: jets and outflows stars: formation
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046264_v66_n1_p_Paron http://hdl.handle.net/20.500.12110/paper_00046264_v66_n1_p_Paron
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00046264_v66_n1_p_Paron
record_format	dspace
spelling	paper:paper_00046264_v66_n1_p_Paron2023-06-08T14:27:16Z Studying the molecular ambient towards the young stellar object EGO G35.04-0.47 Paron, Sergio Ariel Ortega, Martin Eduardo ISM: clouds ISM: H ii regions ISM: jets and outflows stars: formation We are performing a systematic study of the interstellar medium around extended green objects (EGOs), likely massive young stellar objects driving outflows. EGO G35.04-0.47 is located towards a dark cloud at the north-western edge of an H ii region. Recently, H2 jets were discovered towards this source, mainly towards its south-west, where the H2 1-0 S(1) emission peaks. Therefore, the source was catalogued as the molecular hydrogen emission-line object MHO 2429. In order to study the molecular ambient towards this star-forming site, we observed a region around the aforementioned EGO using the Atacama Submillimeter Telescope Experiment in the 12CO J = 3-2, 13CO J = 3-2, HCO+ J = 4-3, and CS J = 7-6 lines with an angular and spectral resolution of 22′′ and 0.11 km s-1, respectively. The observations revealed a molecular clump where the EGO is embedded at vLSR ∼ 51 km s-1, in coincidence with the velocity of a Class I 95 GHz methanol maser previously detected. Analyzing the 12CO line we discovered high velocity molecular gas in the range from 34 to 47 km s-1, most likely a blueshifted outflow driven by the EGO. The alignment and shape of this molecular structure coincide with those of the south-west lobe of MHO 2429, mainly between 46 and 47 km s-1, confirming that we are mapping its CO counterpart. Performing a spectral energy distribution analysis of EGO G35.04-0.47, we found that its central object should be an intermediate-mass young stellar object accreting mass at a rate similar to those found in some massive YSOs. We suggest that this source can become a massive YSO. © The Author 2014. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. Fil:Paron, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ortega, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046264_v66_n1_p_Paron http://hdl.handle.net/20.500.12110/paper_00046264_v66_n1_p_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	ISM: clouds ISM: H ii regions ISM: jets and outflows stars: formation
spellingShingle	ISM: clouds ISM: H ii regions ISM: jets and outflows stars: formation Paron, Sergio Ariel Ortega, Martin Eduardo Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
topic_facet	ISM: clouds ISM: H ii regions ISM: jets and outflows stars: formation
description	We are performing a systematic study of the interstellar medium around extended green objects (EGOs), likely massive young stellar objects driving outflows. EGO G35.04-0.47 is located towards a dark cloud at the north-western edge of an H ii region. Recently, H2 jets were discovered towards this source, mainly towards its south-west, where the H2 1-0 S(1) emission peaks. Therefore, the source was catalogued as the molecular hydrogen emission-line object MHO 2429. In order to study the molecular ambient towards this star-forming site, we observed a region around the aforementioned EGO using the Atacama Submillimeter Telescope Experiment in the 12CO J = 3-2, 13CO J = 3-2, HCO+ J = 4-3, and CS J = 7-6 lines with an angular and spectral resolution of 22′′ and 0.11 km s-1, respectively. The observations revealed a molecular clump where the EGO is embedded at vLSR ∼ 51 km s-1, in coincidence with the velocity of a Class I 95 GHz methanol maser previously detected. Analyzing the 12CO line we discovered high velocity molecular gas in the range from 34 to 47 km s-1, most likely a blueshifted outflow driven by the EGO. The alignment and shape of this molecular structure coincide with those of the south-west lobe of MHO 2429, mainly between 46 and 47 km s-1, confirming that we are mapping its CO counterpart. Performing a spectral energy distribution analysis of EGO G35.04-0.47, we found that its central object should be an intermediate-mass young stellar object accreting mass at a rate similar to those found in some massive YSOs. We suggest that this source can become a massive YSO. © The Author 2014. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved.
author	Paron, Sergio Ariel Ortega, Martin Eduardo
author_facet	Paron, Sergio Ariel Ortega, Martin Eduardo
author_sort	Paron, Sergio Ariel
title	Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
title_short	Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
title_full	Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
title_fullStr	Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
title_full_unstemmed	Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
title_sort	studying the molecular ambient towards the young stellar object ego g35.04-0.47
publishDate	2014
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046264_v66_n1_p_Paron http://hdl.handle.net/20.500.12110/paper_00046264_v66_n1_p_Paron
work_keys_str_mv	AT paronsergioariel studyingthemolecularambienttowardstheyoungstellarobjectegog3504047 AT ortegamartineduardo studyingthemolecularambienttowardstheyoungstellarobjectegog3504047
_version_	1768542964010713088

Studying the molecular ambient towards the young stellar object EGO G35.04-0.47

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