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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/106244

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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-09-29T09:40:53Zoai: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:34982025-09-29 09:40:54.027CONICET 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
dc.identifier.none.fl_str_mv 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
dc.relation.none.fl_str_mv 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
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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