Cyanoacetylene in the outflow/hot molecular core G331.512-0.103
- Autores
- Duronea, Nicolas Urbano; Bronfman, L.; Mendoza, E.; Merello, Manuel; Finger, Ricardo; Reyes, Nicolas; Hervias Caimapo C.; Faure, A.; Cappa, Cristina Elisabeth; Arnal, Edmundo Marcelo; Lepine, Jacques; Kleiner, I.; Åke Nyman, Lars
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Using APEX-1 and APEX-2 observations, we have detected and studied the rotational lines of the HC3N molecule (cyanoacetylene) in the powerful outflow/hot molecular core G331.512-0.103. We identified thirty-one rotational lines at J levels between 24 and 39; seventeen of them in the ground vibrational state v=0 (9 lines corresponding to the main C isotopologue and 8 lines corresponding to the 13C isotopologues), and fourteen in the lowest vibrationally excited state v7=1. Using LTE-based population diagrams for the beam-diluted v=0 transitions, we determined Texc=85±4 K and N(HC3N)=(6.9±0.8)×1014 cm−2 , while for the beam-diluted v7=1 transitions we obtained Texc=89±10 K and N(HC3N)=2±1×1015 cm−2 . Non-LTE calculations using H2 collision rates indicate that the HC3N emission is in good agreement with LTE-based results. From the non-LTE method we estimated Tkin ≃90 K, n(H2)≃2×107 cm−3 for a central core of 6 arcsec in size. A vibrational temperature in the range from 130 K to 145 K was also determined, values which are very likely lower limits. Our results suggest that rotational transitions are thermalized, while IR radiative pumping processes are probably more efficient than collisions in exciting the molecule to the vibrationally excited state v7=1. Abundance ratios derived under LTE conditions for the 13C isotopologues suggest that the main formation pathway of HC3N is C2H2 + CN → HC3N + H.
Fil: Duronea, Nicolas Urbano. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Bronfman, L.. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; Chile
Fil: Mendoza, E.. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Brasil
Fil: Merello, Manuel. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Brasil
Fil: Finger, Ricardo. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; Chile
Fil: Reyes, Nicolas. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; Chile
Fil: Hervias Caimapo C.. Florida State University; Estados Unidos
Fil: Faure, A.. Universidad Grenoble Alpes; Francia
Fil: Cappa, Cristina Elisabeth. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Arnal, Edmundo Marcelo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Lepine, Jacques. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Brasil
Fil: Kleiner, I.. Universite de Paris; Francia
Fil: Åke Nyman, Lars. Joint Alma Observatory; Chile - Materia
-
Jets
Astrochemistry
Formation of stars
Outflows - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/106244
Ver los metadatos del registro completo
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Cyanoacetylene in the outflow/hot molecular core G331.512-0.103Duronea, Nicolas UrbanoBronfman, L.Mendoza, E.Merello, ManuelFinger, RicardoReyes, NicolasHervias Caimapo C.Faure, A.Cappa, Cristina ElisabethArnal, Edmundo MarceloLepine, JacquesKleiner, I.Åke Nyman, LarsJetsAstrochemistryFormation of starsOutflowshttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1Using APEX-1 and APEX-2 observations, we have detected and studied the rotational lines of the HC3N molecule (cyanoacetylene) in the powerful outflow/hot molecular core G331.512-0.103. We identified thirty-one rotational lines at J levels between 24 and 39; seventeen of them in the ground vibrational state v=0 (9 lines corresponding to the main C isotopologue and 8 lines corresponding to the 13C isotopologues), and fourteen in the lowest vibrationally excited state v7=1. Using LTE-based population diagrams for the beam-diluted v=0 transitions, we determined Texc=85±4 K and N(HC3N)=(6.9±0.8)×1014 cm−2 , while for the beam-diluted v7=1 transitions we obtained Texc=89±10 K and N(HC3N)=2±1×1015 cm−2 . Non-LTE calculations using H2 collision rates indicate that the HC3N emission is in good agreement with LTE-based results. From the non-LTE method we estimated Tkin ≃90 K, n(H2)≃2×107 cm−3 for a central core of 6 arcsec in size. A vibrational temperature in the range from 130 K to 145 K was also determined, values which are very likely lower limits. Our results suggest that rotational transitions are thermalized, while IR radiative pumping processes are probably more efficient than collisions in exciting the molecule to the vibrationally excited state v7=1. Abundance ratios derived under LTE conditions for the 13C isotopologues suggest that the main formation pathway of HC3N is C2H2 + CN → HC3N + H.Fil: Duronea, Nicolas Urbano. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Bronfman, L.. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; ChileFil: Mendoza, E.. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; BrasilFil: Merello, Manuel. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; BrasilFil: Finger, Ricardo. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; ChileFil: Reyes, Nicolas. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; ChileFil: Hervias Caimapo C.. Florida State University; Estados UnidosFil: Faure, A.. Universidad Grenoble Alpes; FranciaFil: Cappa, Cristina Elisabeth. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Arnal, Edmundo Marcelo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Lepine, Jacques. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; BrasilFil: Kleiner, I.. Universite de Paris; FranciaFil: Åke Nyman, Lars. Joint Alma Observatory; ChileWiley Blackwell Publishing, Inc2019-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/106244Duronea, Nicolas Urbano; Bronfman, L.; Mendoza, E.; Merello, Manuel; Finger, Ricardo; et al.; Cyanoacetylene in the outflow/hot molecular core G331.512-0.103; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 489; 2; 7-2019; 1519-15320035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz2087info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/489/2/1519/5542242?redirectedFrom=fulltextinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:09:30Zoai:ri.conicet.gov.ar:11336/106244instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:09:31.208CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| title |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| spellingShingle |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 Duronea, Nicolas Urbano Jets Astrochemistry Formation of stars Outflows |
| title_short |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| title_full |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| title_fullStr |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| title_full_unstemmed |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| title_sort |
Cyanoacetylene in the outflow/hot molecular core G331.512-0.103 |
| dc.creator.none.fl_str_mv |
Duronea, Nicolas Urbano Bronfman, L. Mendoza, E. Merello, Manuel Finger, Ricardo Reyes, Nicolas Hervias Caimapo C. Faure, A. Cappa, Cristina Elisabeth Arnal, Edmundo Marcelo Lepine, Jacques Kleiner, I. Åke Nyman, Lars |
| author |
Duronea, Nicolas Urbano |
| author_facet |
Duronea, Nicolas Urbano Bronfman, L. Mendoza, E. Merello, Manuel Finger, Ricardo Reyes, Nicolas Hervias Caimapo C. Faure, A. Cappa, Cristina Elisabeth Arnal, Edmundo Marcelo Lepine, Jacques Kleiner, I. Åke Nyman, Lars |
| author_role |
author |
| author2 |
Bronfman, L. Mendoza, E. Merello, Manuel Finger, Ricardo Reyes, Nicolas Hervias Caimapo C. Faure, A. Cappa, Cristina Elisabeth Arnal, Edmundo Marcelo Lepine, Jacques Kleiner, I. Åke Nyman, Lars |
| author2_role |
author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Jets Astrochemistry Formation of stars Outflows |
| topic |
Jets Astrochemistry Formation of stars Outflows |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.7 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Using APEX-1 and APEX-2 observations, we have detected and studied the rotational lines of the HC3N molecule (cyanoacetylene) in the powerful outflow/hot molecular core G331.512-0.103. We identified thirty-one rotational lines at J levels between 24 and 39; seventeen of them in the ground vibrational state v=0 (9 lines corresponding to the main C isotopologue and 8 lines corresponding to the 13C isotopologues), and fourteen in the lowest vibrationally excited state v7=1. Using LTE-based population diagrams for the beam-diluted v=0 transitions, we determined Texc=85±4 K and N(HC3N)=(6.9±0.8)×1014 cm−2 , while for the beam-diluted v7=1 transitions we obtained Texc=89±10 K and N(HC3N)=2±1×1015 cm−2 . Non-LTE calculations using H2 collision rates indicate that the HC3N emission is in good agreement with LTE-based results. From the non-LTE method we estimated Tkin ≃90 K, n(H2)≃2×107 cm−3 for a central core of 6 arcsec in size. A vibrational temperature in the range from 130 K to 145 K was also determined, values which are very likely lower limits. Our results suggest that rotational transitions are thermalized, while IR radiative pumping processes are probably more efficient than collisions in exciting the molecule to the vibrationally excited state v7=1. Abundance ratios derived under LTE conditions for the 13C isotopologues suggest that the main formation pathway of HC3N is C2H2 + CN → HC3N + H. Fil: Duronea, Nicolas Urbano. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina Fil: Bronfman, L.. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; Chile Fil: Mendoza, E.. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Brasil Fil: Merello, Manuel. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Brasil Fil: Finger, Ricardo. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; Chile Fil: Reyes, Nicolas. Universidad de Chile. Facultad de Ciencias Físicas y Matemáticas; Chile Fil: Hervias Caimapo C.. Florida State University; Estados Unidos Fil: Faure, A.. Universidad Grenoble Alpes; Francia Fil: Cappa, Cristina Elisabeth. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina Fil: Arnal, Edmundo Marcelo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina Fil: Lepine, Jacques. Universidade do Sao Paulo. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Brasil Fil: Kleiner, I.. Universite de Paris; Francia Fil: Åke Nyman, Lars. Joint Alma Observatory; Chile |
| description |
Using APEX-1 and APEX-2 observations, we have detected and studied the rotational lines of the HC3N molecule (cyanoacetylene) in the powerful outflow/hot molecular core G331.512-0.103. We identified thirty-one rotational lines at J levels between 24 and 39; seventeen of them in the ground vibrational state v=0 (9 lines corresponding to the main C isotopologue and 8 lines corresponding to the 13C isotopologues), and fourteen in the lowest vibrationally excited state v7=1. Using LTE-based population diagrams for the beam-diluted v=0 transitions, we determined Texc=85±4 K and N(HC3N)=(6.9±0.8)×1014 cm−2 , while for the beam-diluted v7=1 transitions we obtained Texc=89±10 K and N(HC3N)=2±1×1015 cm−2 . Non-LTE calculations using H2 collision rates indicate that the HC3N emission is in good agreement with LTE-based results. From the non-LTE method we estimated Tkin ≃90 K, n(H2)≃2×107 cm−3 for a central core of 6 arcsec in size. A vibrational temperature in the range from 130 K to 145 K was also determined, values which are very likely lower limits. Our results suggest that rotational transitions are thermalized, while IR radiative pumping processes are probably more efficient than collisions in exciting the molecule to the vibrationally excited state v7=1. Abundance ratios derived under LTE conditions for the 13C isotopologues suggest that the main formation pathway of HC3N is C2H2 + CN → HC3N + H. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019-07 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
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http://hdl.handle.net/11336/106244 Duronea, Nicolas Urbano; Bronfman, L.; Mendoza, E.; Merello, Manuel; Finger, Ricardo; et al.; Cyanoacetylene in the outflow/hot molecular core G331.512-0.103; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 489; 2; 7-2019; 1519-1532 0035-8711 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/106244 |
| identifier_str_mv |
Duronea, Nicolas Urbano; Bronfman, L.; Mendoza, E.; Merello, Manuel; Finger, Ricardo; et al.; Cyanoacetylene in the outflow/hot molecular core G331.512-0.103; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 489; 2; 7-2019; 1519-1532 0035-8711 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz2087 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/489/2/1519/5542242?redirectedFrom=fulltext |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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