Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?

8 pags., 6 figs.

Detalles Bibliográficos
Autores: Cernicharo, José, Fuentetaja, R., Agúndez, Marcelino, Cabezas, Carlos, Tercero, Belén, Marcelino, Nuria, Vicente, P. de
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/350062
Acceso en línea:http://hdl.handle.net/10261/350062
Access Level:acceso abierto
Palabra clave:Astrochemistry
Line: identification
Molecular data
ISM: molecules
ISM: individual objects: TMC-1
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repository_id_str
spelling Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?Cernicharo, JoséFuentetaja, R.Agúndez, MarcelinoCabezas, CarlosTercero, BelénMarcelino, NuriaVicente, P. deAstrochemistryLine: identificationMolecular dataISM: moleculesISM: individual objects: TMC-18 pags., 6 figs.In this work, we present the detection of twelve doublets with quantum numbers of N = 12–11 to N = 17–16 of the ν(µΣ) vibrationally excited state of CH towards TMC-1. This marks the first time that an excited vibrational state of a molecule has been detected in a cold starless core. The data are part of the QUIJOTE line survey gathered with the Yebes 40m radio telescope. The line intensities have been aptly reproduced with a rotational temperature of 6.2 ± 0.4 K and a column density of (1.2 ± 0.2) × 10 cm. We also analysed the ground state transitions of CH, detecting fourteen lines with quantum numbers of J = 23/2–21/2 to J = 35/2 for each of the two Π/ and Π/ ladders. It is not possible to model the intensities of all the transitions of the ground state simultaneously using a single column density. We considered the two ladders as two different species and found that the rotational temperature is the same for both ladders, T(Π/) = T(Π/) = 6.2 ± 0.2, achieving a result that is comparable to that of the ν(µΣ) state. The derived column densities are N(Π/) = (6.2 ± 0.3) × 10 cm and N(Π/) = (8.0 ± 0.4) × 10 cm. The fraction of CH molecules in its Π/Π/, and ν(µΣ) states is 96.8%, 1.3%, and 1.9%, respectively. Finally, we report that this vibrational mode has also been detected towards the cold cores Lupus-1A and L1495B, as well as the low-mass star forming cores L1527 and L483, with fractions of CH molecules in this mode of 3.8%, 4.1%, 14.8%, and 6%, respectively.We thank Ministerio de Ciencia e Innovación of Spain (MICIU) for funding support through projects PID2019-106110GB-I00, PID2019-107115GB-C21/AEI/10.13039/501100011033, and PID2019-106235GB-I00. We also thank ERC for funding through grant ERC-2013-Syg-610256-NANOCOSMOS.Peer reviewedSpringerMinisterio de Ciencia, Innovación y Universidades (España)European CommissionAgencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420232024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/350062reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106110GB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107115GB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106235GB-I00info:eu-repo/grantAgreement/EC/FP7/610256http://dx.doi.org/10.1051/0004-6361/202348495Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3500622026-05-22T06:33:51Z
dc.title.none.fl_str_mv Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
title Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
spellingShingle Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
Cernicharo, José
Astrochemistry
Line: identification
Molecular data
ISM: molecules
ISM: individual objects: TMC-1
title_short Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
title_full Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
title_fullStr Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
title_full_unstemmed Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
title_sort Detection of vibrationally excited C6H in the cold prestellar core TMC-1 with the QUIJOTE line survey?
dc.creator.none.fl_str_mv Cernicharo, José
Fuentetaja, R.
Agúndez, Marcelino
Cabezas, Carlos
Tercero, Belén
Marcelino, Nuria
Vicente, P. de
author Cernicharo, José
author_facet Cernicharo, José
Fuentetaja, R.
Agúndez, Marcelino
Cabezas, Carlos
Tercero, Belén
Marcelino, Nuria
Vicente, P. de
author_role author
author2 Fuentetaja, R.
Agúndez, Marcelino
Cabezas, Carlos
Tercero, Belén
Marcelino, Nuria
Vicente, P. de
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
European Commission
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Astrochemistry
Line: identification
Molecular data
ISM: molecules
ISM: individual objects: TMC-1
topic Astrochemistry
Line: identification
Molecular data
ISM: molecules
ISM: individual objects: TMC-1
description 8 pags., 6 figs.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/350062
url http://hdl.handle.net/10261/350062
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106110GB-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107115GB-C21
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106235GB-I00
info:eu-repo/grantAgreement/EC/FP7/610256
http://dx.doi.org/10.1051/0004-6361/202348495
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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