Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA

Jets and disk winds arise from materials with excess angular momentum ejected from the accretion disks in forming stars. How these structures are launched and how they impact the gas within the innermost regions of these objects remains poorly understood. MWC349A is a massive star that has a circums...

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Detalles Bibliográficos
Autores: Martínez-Henares, Antonio, Zhang, Qizhou, Jiménez-Serra, Izaskun, Martín-Pintado, Jesús, Huélamo, Nuria, Prasad, Sirina, Moran, James, Báez-Rubio, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/377171
Acceso en línea:http://hdl.handle.net/10261/377171
Access Level:acceso abierto
Palabra clave:Massive stars
Circumstellar masers
H II regions
Stellar winds
Stellar jets
Stellar accretion disks
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spelling Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMAMartínez-Henares, AntonioZhang, QizhouJiménez-Serra, IzaskunMartín-Pintado, JesúsHuélamo, NuriaPrasad, SirinaMoran, JamesBáez-Rubio, A.Massive starsCircumstellar masersH II regionsStellar windsStellar jetsStellar accretion disksJets and disk winds arise from materials with excess angular momentum ejected from the accretion disks in forming stars. How these structures are launched and how they impact the gas within the innermost regions of these objects remains poorly understood. MWC349A is a massive star that has a circumstellar disk that rotates in accord with Kepler's Law, with an ionized wind and a high-velocity jet launched from the disk surface. The strongly maser-amplified emission of hydrogen radio recombination lines (RRLs) observed toward this system provides a comprehensive picture of its ionized environment with exquisite detail. In this Letter, we present Atacama Large Millimeter/submillimeter Array observations of the H26α RRL and continuum emission obtained with the highest angular resolution ever used toward this source (beam of ∼0farcs02). The maser RRL emission is resolved for the first time and clearly delineates the ionized disk, wind, and jet. We analyzed the RRL data cubes with the 3D non-LTE radiative transfer model MORELI, confirming that the jet is poorly collimated. We found that the jet orientation is closer to the rotation axis of the system than derived from spatially unresolved data. This study confirms that hydrogen RRL masers are powerful probes of the physical structure and kinematics of the innermost ionized material around massive stars.A.M.-H., I.J-.S., and J.M.-P. acknowledge funding from grants No. PID2019-105552RB-C41 and PID2022-136814NB-I00 funded by MICIU/AEI/10.13039/501100011033 and by ERDF/EU. A.M.-H. has received support from grant MDM-2017-0737 Unidad de Excelencia "Marıa de Maeztu" Centro de Astrobiologıa (CAB, CSIC-INTA) funded by MICIU/AEI/10.13039/501100011033. A.M.-H acknowledges grant CSIC iMOVE 23244 for the funding of a stay at the Harvard-Smithsonian Center for Astrophysics during which the results of this work were obtained. N.H. has been funded by grant No. PID2019-107061GB-C61 by the Spanish Ministry of Science and Innovation/State Agency of Research MCIN/AEI/10.13039/501100011033.With funding from the Spanish government through the ‘María de Maeztu Unit of Excelence’ accreditation (MDM-2017-0737).Peer reviewedAmerican Astronomical SocietyIOP PublishingMinisterio de Ciencia, Innovación y Universidades (España)Ministerio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)European CommissionCSIC-INTA - Centro de Astrobiología (CAB)Consejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/377171reponame: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/PID2019-105552RB-C41info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-136814NB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/MDM-2017-0737info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107061GB-C61https://doi.org/10.3847/2041-8213/ad638dSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3771712026-05-22T06:33:51Z
dc.title.none.fl_str_mv Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
title Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
spellingShingle Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
Martínez-Henares, Antonio
Massive stars
Circumstellar masers
H II regions
Stellar winds
Stellar jets
Stellar accretion disks
title_short Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
title_full Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
title_fullStr Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
title_full_unstemmed Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
title_sort Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA
dc.creator.none.fl_str_mv Martínez-Henares, Antonio
Zhang, Qizhou
Jiménez-Serra, Izaskun
Martín-Pintado, Jesús
Huélamo, Nuria
Prasad, Sirina
Moran, James
Báez-Rubio, A.
author Martínez-Henares, Antonio
author_facet Martínez-Henares, Antonio
Zhang, Qizhou
Jiménez-Serra, Izaskun
Martín-Pintado, Jesús
Huélamo, Nuria
Prasad, Sirina
Moran, James
Báez-Rubio, A.
author_role author
author2 Zhang, Qizhou
Jiménez-Serra, Izaskun
Martín-Pintado, Jesús
Huélamo, Nuria
Prasad, Sirina
Moran, James
Báez-Rubio, A.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
European Commission
CSIC-INTA - Centro de Astrobiología (CAB)
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Massive stars
Circumstellar masers
H II regions
Stellar winds
Stellar jets
Stellar accretion disks
topic Massive stars
Circumstellar masers
H II regions
Stellar winds
Stellar jets
Stellar accretion disks
description Jets and disk winds arise from materials with excess angular momentum ejected from the accretion disks in forming stars. How these structures are launched and how they impact the gas within the innermost regions of these objects remains poorly understood. MWC349A is a massive star that has a circumstellar disk that rotates in accord with Kepler's Law, with an ionized wind and a high-velocity jet launched from the disk surface. The strongly maser-amplified emission of hydrogen radio recombination lines (RRLs) observed toward this system provides a comprehensive picture of its ionized environment with exquisite detail. In this Letter, we present Atacama Large Millimeter/submillimeter Array observations of the H26α RRL and continuum emission obtained with the highest angular resolution ever used toward this source (beam of ∼0farcs02). The maser RRL emission is resolved for the first time and clearly delineates the ionized disk, wind, and jet. We analyzed the RRL data cubes with the 3D non-LTE radiative transfer model MORELI, confirming that the jet is poorly collimated. We found that the jet orientation is closer to the rotation axis of the system than derived from spatially unresolved data. This study confirms that hydrogen RRL masers are powerful probes of the physical structure and kinematics of the innermost ionized material around massive stars.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
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/10261/377171
url http://hdl.handle.net/10261/377171
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/PID2019-105552RB-C41
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-136814NB-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/MDM-2017-0737
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107061GB-C61
https://doi.org/10.3847/2041-8213/ad638d
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Astronomical Society
IOP Publishing
publisher.none.fl_str_mv American Astronomical Society
IOP Publishing
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
repository.mail.fl_str_mv
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