Millimeter and far-IR study of the IRDC SDC341.232-0.268
- Autores
- Vazzano, María Mercedes; Cappa, Cristina Elisabet; Firpo, Verónica; López Caraballo, C. H.; Rubio, Mónica; Duronea, Nicolás Urbano
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We analyze the molecular gas and dust associated with the infrared dark cloud SDC341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates, and es- tablish possible infall or outflow gas motions. We base our study on 12CO(2-1), 13CO(2-1), and C18O(2-1) data obtained with the APEX telescope, molecular data of high density tracers from the MALT90 survey and IR images from Spitzer, Herschel and ATLASGAL. The study reveals two clumps at −44 km s−1 towards the IRDC, with densities of > 104cm−3, typical of IRDCs, while high density tracers show H2 densities > 105. FIR images reveals the presence of cold dust linked to the molecular clumps and EGOs. A comparison of the spectra of the optically thin and optically thick molecular lines towards the EGOs suggests the existence of infall and outflow motions.
Analizamos el gas molecular y el polvo asociado a la nube oscura infrarroja SDC341.232-0.268 con el fin de investigar las características y parámetros físicos del gas, determinar el estado evolutivo de los cuatro EGOs embebidos y establecer posibles movimientos de acreción o flujo molecular. Nos basamos en datos de 12CO(2-1), 13CO(2-1) y C18O(2-1) obtenidos con el telescopio APEX, trazadores de alta densidad extraídos de MALT90, e imágenes infrarrojas de Spitzer, Herschel y ATLASGAL. El estudio revela dos grumos moleculares a −44 km s−1 coincidentes con la IRDC con una densidad > 104cm−3, típica de IRDCs. Los trazadores de alta densidad arrojan densidades de H2 > 105. Las imágenes en el lejano IR muestran polvo frío asociado a los grumos moleculares y a los EGOs. La comparación de espectros moleculares ópticamente gruesos y finos sugiere la existencia de acreción y flujos moleculares.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Astronomía
dust, extinction
ISM: clouds
ISM: individual objects: IRDC SDC341.232-0.268
ISM: kinematics and dynamics
ISM: molecules
stars: formation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/118492
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Millimeter and far-IR study of the IRDC SDC341.232-0.268Vazzano, María MercedesCappa, Cristina ElisabetFirpo, VerónicaLópez Caraballo, C. H.Rubio, MónicaDuronea, Nicolás UrbanoAstronomíadust, extinctionISM: cloudsISM: individual objects: IRDC SDC341.232-0.268ISM: kinematics and dynamicsISM: moleculesstars: formationWe analyze the molecular gas and dust associated with the infrared dark cloud SDC341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates, and es- tablish possible infall or outflow gas motions. We base our study on <sup>12</sup>CO(2-1), <sup>13</sup>CO(2-1), and C<sup>18</sup>O(2-1) data obtained with the APEX telescope, molecular data of high density tracers from the MALT90 survey and IR images from Spitzer, Herschel and ATLASGAL. The study reveals two clumps at −44 km s<sup>−1</sup> towards the IRDC, with densities of > 10<sup>4</sup>cm<sup>−3</sup>, typical of IRDCs, while high density tracers show H<sub>2</sub> densities > 10<sup>5</sup>. FIR images reveals the presence of cold dust linked to the molecular clumps and EGOs. A comparison of the spectra of the optically thin and optically thick molecular lines towards the EGOs suggests the existence of infall and outflow motions.Analizamos el gas molecular y el polvo asociado a la nube oscura infrarroja SDC341.232-0.268 con el fin de investigar las características y parámetros físicos del gas, determinar el estado evolutivo de los cuatro EGOs embebidos y establecer posibles movimientos de acreción o flujo molecular. Nos basamos en datos de <sup>12</sup>CO(2-1), <sup>13</sup>CO(2-1) y C<sup>18</sup>O(2-1) obtenidos con el telescopio APEX, trazadores de alta densidad extraídos de MALT90, e imágenes infrarrojas de Spitzer, Herschel y ATLASGAL. El estudio revela dos grumos moleculares a −44 km s<sup>−1</sup> coincidentes con la IRDC con una densidad > 10<sup>4</sup>cm<sup>−3</sup>, típica de IRDCs. Los trazadores de alta densidad arrojan densidades de H<sub>2</sub> > 10<sup>5</sup>. Las imágenes en el lejano IR muestran polvo frío asociado a los grumos moleculares y a los EGOs. La comparación de espectros moleculares ópticamente gruesos y finos sugiere la existencia de acreción y flujos moleculares.Facultad de Ciencias Astronómicas y Geofísicas2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf289-303http://sedici.unlp.edu.ar/handle/10915/118492enginfo:eu-repo/semantics/altIdentifier/url/http://www.astroscu.unam.mx/rmaa/RMxAA..55-2/PDF/RMxAA..55-2_mvazzano-XV.pdfinfo:eu-repo/semantics/altIdentifier/issn/0185-1101info:eu-repo/semantics/altIdentifier/doi/10.22201/ia.01851101p.2019.55.02.15info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:27:54Zoai:sedici.unlp.edu.ar:10915/118492Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:27:54.897SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
title |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
spellingShingle |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 Vazzano, María Mercedes Astronomía dust, extinction ISM: clouds ISM: individual objects: IRDC SDC341.232-0.268 ISM: kinematics and dynamics ISM: molecules stars: formation |
title_short |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
title_full |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
title_fullStr |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
title_full_unstemmed |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
title_sort |
Millimeter and far-IR study of the IRDC SDC341.232-0.268 |
dc.creator.none.fl_str_mv |
Vazzano, María Mercedes Cappa, Cristina Elisabet Firpo, Verónica López Caraballo, C. H. Rubio, Mónica Duronea, Nicolás Urbano |
author |
Vazzano, María Mercedes |
author_facet |
Vazzano, María Mercedes Cappa, Cristina Elisabet Firpo, Verónica López Caraballo, C. H. Rubio, Mónica Duronea, Nicolás Urbano |
author_role |
author |
author2 |
Cappa, Cristina Elisabet Firpo, Verónica López Caraballo, C. H. Rubio, Mónica Duronea, Nicolás Urbano |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Astronomía dust, extinction ISM: clouds ISM: individual objects: IRDC SDC341.232-0.268 ISM: kinematics and dynamics ISM: molecules stars: formation |
topic |
Astronomía dust, extinction ISM: clouds ISM: individual objects: IRDC SDC341.232-0.268 ISM: kinematics and dynamics ISM: molecules stars: formation |
dc.description.none.fl_txt_mv |
We analyze the molecular gas and dust associated with the infrared dark cloud SDC341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates, and es- tablish possible infall or outflow gas motions. We base our study on <sup>12</sup>CO(2-1), <sup>13</sup>CO(2-1), and C<sup>18</sup>O(2-1) data obtained with the APEX telescope, molecular data of high density tracers from the MALT90 survey and IR images from Spitzer, Herschel and ATLASGAL. The study reveals two clumps at −44 km s<sup>−1</sup> towards the IRDC, with densities of > 10<sup>4</sup>cm<sup>−3</sup>, typical of IRDCs, while high density tracers show H<sub>2</sub> densities > 10<sup>5</sup>. FIR images reveals the presence of cold dust linked to the molecular clumps and EGOs. A comparison of the spectra of the optically thin and optically thick molecular lines towards the EGOs suggests the existence of infall and outflow motions. Analizamos el gas molecular y el polvo asociado a la nube oscura infrarroja SDC341.232-0.268 con el fin de investigar las características y parámetros físicos del gas, determinar el estado evolutivo de los cuatro EGOs embebidos y establecer posibles movimientos de acreción o flujo molecular. Nos basamos en datos de <sup>12</sup>CO(2-1), <sup>13</sup>CO(2-1) y C<sup>18</sup>O(2-1) obtenidos con el telescopio APEX, trazadores de alta densidad extraídos de MALT90, e imágenes infrarrojas de Spitzer, Herschel y ATLASGAL. El estudio revela dos grumos moleculares a −44 km s<sup>−1</sup> coincidentes con la IRDC con una densidad > 10<sup>4</sup>cm<sup>−3</sup>, típica de IRDCs. Los trazadores de alta densidad arrojan densidades de H<sub>2</sub> > 10<sup>5</sup>. Las imágenes en el lejano IR muestran polvo frío asociado a los grumos moleculares y a los EGOs. La comparación de espectros moleculares ópticamente gruesos y finos sugiere la existencia de acreción y flujos moleculares. Facultad de Ciencias Astronómicas y Geofísicas |
description |
We analyze the molecular gas and dust associated with the infrared dark cloud SDC341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates, and es- tablish possible infall or outflow gas motions. We base our study on <sup>12</sup>CO(2-1), <sup>13</sup>CO(2-1), and C<sup>18</sup>O(2-1) data obtained with the APEX telescope, molecular data of high density tracers from the MALT90 survey and IR images from Spitzer, Herschel and ATLASGAL. The study reveals two clumps at −44 km s<sup>−1</sup> towards the IRDC, with densities of > 10<sup>4</sup>cm<sup>−3</sup>, typical of IRDCs, while high density tracers show H<sub>2</sub> densities > 10<sup>5</sup>. FIR images reveals the presence of cold dust linked to the molecular clumps and EGOs. A comparison of the spectra of the optically thin and optically thick molecular lines towards the EGOs suggests the existence of infall and outflow motions. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/118492 |
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http://sedici.unlp.edu.ar/handle/10915/118492 |
dc.language.none.fl_str_mv |
eng |
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eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.astroscu.unam.mx/rmaa/RMxAA..55-2/PDF/RMxAA..55-2_mvazzano-XV.pdf info:eu-repo/semantics/altIdentifier/issn/0185-1101 info:eu-repo/semantics/altIdentifier/doi/10.22201/ia.01851101p.2019.55.02.15 |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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