An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2
- Autores
- Gómez Gallardo, José Facundo; Torrelles, José M.; Girart, Josep M.; Surcis, Gabriele; Kim, Jeong-Sook; Cantó, Jorge; Anglada, Guillem; Curiel, Salvador; Vlemmings, Wouter H. T.; Carrasco Gonzalez, Carlos Eugenio; Rodríguez Kamenetzky, Adriana Raquel; Kim, Soon-Wook; Goddi, Ciriaco; van Langevelde, Huib J.; Sanchez-Monge, Álvaro
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We have carried out Atacama Large Millimeter/submillimeter Array observations of the massive star-forming region W75N(B), which contains the massive protostars VLA1, VLA2, and VLA3. Particularly, VLA2 is an enigmatic protostar associated with a wind-driven H2O maser shell, which has evolved from an almost isotropic outflow to a collimated one in just 20 yr. The shell expansion seemed to be halted by an obstacle located to the northeast of VLA2. Here we present our findings from observing the 1.3 mm continuum and H2CO and SiO emission lines. Within a region of ~30″ (~39,000 au) diameter, we have detected 40 compact millimeter continuum sources, three of them coinciding with VLA1, VLA2, and VLA3. While the H2CO emission is mainly distributed in a fragmented structure around the three massive protostars, but without any of the main H2CO clumps spatially coinciding with them, the SiO is highly concentrated on VLA2, indicating the presence of very strong shocks generated near this protostar. The SiO emission is clearly resolved into an elongated structure (~0.″6 × 0.″3; ~780 au×390 au) perpendicular to the major axis of the wind-driven maser shell. The structure and kinematics of the SiO emission are consistent with a toroid and a wide-angle outflow surrounding a central mass of ~10 M ⊙, thus supporting previous theoretical predictions regarding the evolution of the outflow. Additionally, we have identified the expected location and estimated the gas density of the obstacle that is hindering the expansion of the maser shell.
Fil: Gómez Gallardo, José Facundo. Instituto de Astrofísica de Andalucía; España
Fil: Torrelles, José M.. Institut de Ciències de l’Espai; España
Fil: Girart, Josep M.. Korea Astronomy And Space Science Institute; Corea del Sur
Fil: Surcis, Gabriele. Korea Astronomy And Space Science Institute; Corea del Sur
Fil: Kim, Jeong-Sook. Korea Astronomy And Space Science Institute;; Corea del Sur
Fil: Cantó, Jorge. Instituto de Astrofísica de Andalucía; España
Fil: Anglada, Guillem. Instituto de Astrofísica de Andalucía; España
Fil: Curiel, Salvador. Universidad Nacional Autónoma de México; México
Fil: Vlemmings, Wouter H. T.. Chalmers University of Technology; Suecia
Fil: Carrasco Gonzalez, Carlos Eugenio. Universidad Nacional Autónoma de México; México
Fil: Rodríguez Kamenetzky, Adriana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Kim, Soon-Wook. Korea Astronomy and Space Science Institute, ; Corea del Sur
Fil: Goddi, Ciriaco. Universidade de Sao Paulo; Brasil
Fil: van Langevelde, Huib J.. Leiden University; Países Bajos. Oude Hoogeveensedijk; Países Bajos
Fil: Sanchez-Monge, Álvaro. Institut d’Estudis Espacials de Catalunya; España. Institut de Ciències de l’Espai; España - Materia
-
PROTOSTARS
STELLAR JETS
RADIO CONTINUUM EMISSION
CIRCUMSTELLAR DISKS
STELLAR WINDS
STAR FORMING REGIONS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/250908
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oai:ri.conicet.gov.ar:11336/250908 |
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spelling |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2Gómez Gallardo, José FacundoTorrelles, José M.Girart, Josep M.Surcis, GabrieleKim, Jeong-SookCantó, JorgeAnglada, GuillemCuriel, SalvadorVlemmings, Wouter H. T.Carrasco Gonzalez, Carlos EugenioRodríguez Kamenetzky, Adriana RaquelKim, Soon-WookGoddi, Ciriacovan Langevelde, Huib J.Sanchez-Monge, ÁlvaroPROTOSTARSSTELLAR JETSRADIO CONTINUUM EMISSIONCIRCUMSTELLAR DISKSSTELLAR WINDSSTAR FORMING REGIONShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have carried out Atacama Large Millimeter/submillimeter Array observations of the massive star-forming region W75N(B), which contains the massive protostars VLA1, VLA2, and VLA3. Particularly, VLA2 is an enigmatic protostar associated with a wind-driven H2O maser shell, which has evolved from an almost isotropic outflow to a collimated one in just 20 yr. The shell expansion seemed to be halted by an obstacle located to the northeast of VLA2. Here we present our findings from observing the 1.3 mm continuum and H2CO and SiO emission lines. Within a region of ~30″ (~39,000 au) diameter, we have detected 40 compact millimeter continuum sources, three of them coinciding with VLA1, VLA2, and VLA3. While the H2CO emission is mainly distributed in a fragmented structure around the three massive protostars, but without any of the main H2CO clumps spatially coinciding with them, the SiO is highly concentrated on VLA2, indicating the presence of very strong shocks generated near this protostar. The SiO emission is clearly resolved into an elongated structure (~0.″6 × 0.″3; ~780 au×390 au) perpendicular to the major axis of the wind-driven maser shell. The structure and kinematics of the SiO emission are consistent with a toroid and a wide-angle outflow surrounding a central mass of ~10 M ⊙, thus supporting previous theoretical predictions regarding the evolution of the outflow. Additionally, we have identified the expected location and estimated the gas density of the obstacle that is hindering the expansion of the maser shell.Fil: Gómez Gallardo, José Facundo. Instituto de Astrofísica de Andalucía; EspañaFil: Torrelles, José M.. Institut de Ciències de l’Espai; EspañaFil: Girart, Josep M.. Korea Astronomy And Space Science Institute; Corea del SurFil: Surcis, Gabriele. Korea Astronomy And Space Science Institute; Corea del SurFil: Kim, Jeong-Sook. Korea Astronomy And Space Science Institute;; Corea del SurFil: Cantó, Jorge. Instituto de Astrofísica de Andalucía; EspañaFil: Anglada, Guillem. Instituto de Astrofísica de Andalucía; EspañaFil: Curiel, Salvador. Universidad Nacional Autónoma de México; MéxicoFil: Vlemmings, Wouter H. T.. Chalmers University of Technology; SueciaFil: Carrasco Gonzalez, Carlos Eugenio. Universidad Nacional Autónoma de México; MéxicoFil: Rodríguez Kamenetzky, Adriana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Kim, Soon-Wook. Korea Astronomy and Space Science Institute, ; Corea del SurFil: Goddi, Ciriaco. Universidade de Sao Paulo; BrasilFil: van Langevelde, Huib J.. Leiden University; Países Bajos. Oude Hoogeveensedijk; Países BajosFil: Sanchez-Monge, Álvaro. Institut d’Estudis Espacials de Catalunya; España. Institut de Ciències de l’Espai; EspañaAmerican Astronomical Society2023-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/250908Gómez Gallardo, José Facundo; Torrelles, José M.; Girart, Josep M.; Surcis, Gabriele; Kim, Jeong-Sook; et al.; An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2; American Astronomical Society; The Astrophysical Journal Letters; 956; 2; 11-2023; 1-132041-8213CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/ad01bdinfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/2041-8213/ad01bdinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:01:09Zoai:ri.conicet.gov.ar:11336/250908instacron: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 10:01:09.811CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
title |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
spellingShingle |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 Gómez Gallardo, José Facundo PROTOSTARS STELLAR JETS RADIO CONTINUUM EMISSION CIRCUMSTELLAR DISKS STELLAR WINDS STAR FORMING REGIONS |
title_short |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
title_full |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
title_fullStr |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
title_full_unstemmed |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
title_sort |
An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2 |
dc.creator.none.fl_str_mv |
Gómez Gallardo, José Facundo Torrelles, José M. Girart, Josep M. Surcis, Gabriele Kim, Jeong-Sook Cantó, Jorge Anglada, Guillem Curiel, Salvador Vlemmings, Wouter H. T. Carrasco Gonzalez, Carlos Eugenio Rodríguez Kamenetzky, Adriana Raquel Kim, Soon-Wook Goddi, Ciriaco van Langevelde, Huib J. Sanchez-Monge, Álvaro |
author |
Gómez Gallardo, José Facundo |
author_facet |
Gómez Gallardo, José Facundo Torrelles, José M. Girart, Josep M. Surcis, Gabriele Kim, Jeong-Sook Cantó, Jorge Anglada, Guillem Curiel, Salvador Vlemmings, Wouter H. T. Carrasco Gonzalez, Carlos Eugenio Rodríguez Kamenetzky, Adriana Raquel Kim, Soon-Wook Goddi, Ciriaco van Langevelde, Huib J. Sanchez-Monge, Álvaro |
author_role |
author |
author2 |
Torrelles, José M. Girart, Josep M. Surcis, Gabriele Kim, Jeong-Sook Cantó, Jorge Anglada, Guillem Curiel, Salvador Vlemmings, Wouter H. T. Carrasco Gonzalez, Carlos Eugenio Rodríguez Kamenetzky, Adriana Raquel Kim, Soon-Wook Goddi, Ciriaco van Langevelde, Huib J. Sanchez-Monge, Álvaro |
author2_role |
author author author author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
PROTOSTARS STELLAR JETS RADIO CONTINUUM EMISSION CIRCUMSTELLAR DISKS STELLAR WINDS STAR FORMING REGIONS |
topic |
PROTOSTARS STELLAR JETS RADIO CONTINUUM EMISSION CIRCUMSTELLAR DISKS STELLAR WINDS STAR FORMING REGIONS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We have carried out Atacama Large Millimeter/submillimeter Array observations of the massive star-forming region W75N(B), which contains the massive protostars VLA1, VLA2, and VLA3. Particularly, VLA2 is an enigmatic protostar associated with a wind-driven H2O maser shell, which has evolved from an almost isotropic outflow to a collimated one in just 20 yr. The shell expansion seemed to be halted by an obstacle located to the northeast of VLA2. Here we present our findings from observing the 1.3 mm continuum and H2CO and SiO emission lines. Within a region of ~30″ (~39,000 au) diameter, we have detected 40 compact millimeter continuum sources, three of them coinciding with VLA1, VLA2, and VLA3. While the H2CO emission is mainly distributed in a fragmented structure around the three massive protostars, but without any of the main H2CO clumps spatially coinciding with them, the SiO is highly concentrated on VLA2, indicating the presence of very strong shocks generated near this protostar. The SiO emission is clearly resolved into an elongated structure (~0.″6 × 0.″3; ~780 au×390 au) perpendicular to the major axis of the wind-driven maser shell. The structure and kinematics of the SiO emission are consistent with a toroid and a wide-angle outflow surrounding a central mass of ~10 M ⊙, thus supporting previous theoretical predictions regarding the evolution of the outflow. Additionally, we have identified the expected location and estimated the gas density of the obstacle that is hindering the expansion of the maser shell. Fil: Gómez Gallardo, José Facundo. Instituto de Astrofísica de Andalucía; España Fil: Torrelles, José M.. Institut de Ciències de l’Espai; España Fil: Girart, Josep M.. Korea Astronomy And Space Science Institute; Corea del Sur Fil: Surcis, Gabriele. Korea Astronomy And Space Science Institute; Corea del Sur Fil: Kim, Jeong-Sook. Korea Astronomy And Space Science Institute;; Corea del Sur Fil: Cantó, Jorge. Instituto de Astrofísica de Andalucía; España Fil: Anglada, Guillem. Instituto de Astrofísica de Andalucía; España Fil: Curiel, Salvador. Universidad Nacional Autónoma de México; México Fil: Vlemmings, Wouter H. T.. Chalmers University of Technology; Suecia Fil: Carrasco Gonzalez, Carlos Eugenio. Universidad Nacional Autónoma de México; México Fil: Rodríguez Kamenetzky, Adriana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina Fil: Kim, Soon-Wook. Korea Astronomy and Space Science Institute, ; Corea del Sur Fil: Goddi, Ciriaco. Universidade de Sao Paulo; Brasil Fil: van Langevelde, Huib J.. Leiden University; Países Bajos. Oude Hoogeveensedijk; Países Bajos Fil: Sanchez-Monge, Álvaro. Institut d’Estudis Espacials de Catalunya; España. Institut de Ciències de l’Espai; España |
description |
We have carried out Atacama Large Millimeter/submillimeter Array observations of the massive star-forming region W75N(B), which contains the massive protostars VLA1, VLA2, and VLA3. Particularly, VLA2 is an enigmatic protostar associated with a wind-driven H2O maser shell, which has evolved from an almost isotropic outflow to a collimated one in just 20 yr. The shell expansion seemed to be halted by an obstacle located to the northeast of VLA2. Here we present our findings from observing the 1.3 mm continuum and H2CO and SiO emission lines. Within a region of ~30″ (~39,000 au) diameter, we have detected 40 compact millimeter continuum sources, three of them coinciding with VLA1, VLA2, and VLA3. While the H2CO emission is mainly distributed in a fragmented structure around the three massive protostars, but without any of the main H2CO clumps spatially coinciding with them, the SiO is highly concentrated on VLA2, indicating the presence of very strong shocks generated near this protostar. The SiO emission is clearly resolved into an elongated structure (~0.″6 × 0.″3; ~780 au×390 au) perpendicular to the major axis of the wind-driven maser shell. The structure and kinematics of the SiO emission are consistent with a toroid and a wide-angle outflow surrounding a central mass of ~10 M ⊙, thus supporting previous theoretical predictions regarding the evolution of the outflow. Additionally, we have identified the expected location and estimated the gas density of the obstacle that is hindering the expansion of the maser shell. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-11 |
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/11336/250908 Gómez Gallardo, José Facundo; Torrelles, José M.; Girart, Josep M.; Surcis, Gabriele; Kim, Jeong-Sook; et al.; An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2; American Astronomical Society; The Astrophysical Journal Letters; 956; 2; 11-2023; 1-13 2041-8213 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/250908 |
identifier_str_mv |
Gómez Gallardo, José Facundo; Torrelles, José M.; Girart, Josep M.; Surcis, Gabriele; Kim, Jeong-Sook; et al.; An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2; American Astronomical Society; The Astrophysical Journal Letters; 956; 2; 11-2023; 1-13 2041-8213 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/ad01bd info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/2041-8213/ad01bd |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Astronomical Society |
publisher.none.fl_str_mv |
American Astronomical Society |
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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1844613801976004608 |
score |
13.070432 |