On the multiplicity of the zero-age main-sequence O star Herschel 36
- Autores
- Arias, Julia Inés; Barbá, Rodolfo Héctor; Gamen, Roberto Claudio; Morrell, Nidia Irene; Maíz Apellániz, Jesús; Alfaro, Emilio J.; Sota, Alfredo; Walborn, Nolan Revere; Moni Bidin, Cristian
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multiple system, with at least three components detected in its spectrum. Based on our radial-velocity (RV) study, we propose a picture of a close massive binary and a more distant companion, most probably in wide orbit about each other. The orbital solution for the binary, whose components we identify as O9V and B0.5V, is characterized by a period of 1.5415 0.0006 days. With a spectral type O7.5V, the third body is the most luminous component of the system and also presents RV variations with a period close to 498 days. Some possible hypotheses to explain the variability are briefly addressed and further observations are suggested.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
Binaries: close
Stars: early-type
Stars: individual (Herschel 36) - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/82458
Ver los metadatos del registro completo
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On the multiplicity of the zero-age main-sequence O star Herschel 36Arias, Julia InésBarbá, Rodolfo HéctorGamen, Roberto ClaudioMorrell, Nidia IreneMaíz Apellániz, JesúsAlfaro, Emilio J.Sota, AlfredoWalborn, Nolan RevereMoni Bidin, CristianCiencias AstronómicasBinaries: closeStars: early-typeStars: individual (Herschel 36)We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multiple system, with at least three components detected in its spectrum. Based on our radial-velocity (RV) study, we propose a picture of a close massive binary and a more distant companion, most probably in wide orbit about each other. The orbital solution for the binary, whose components we identify as O9V and B0.5V, is characterized by a period of 1.5415 0.0006 days. With a spectral type O7.5V, the third body is the most luminous component of the system and also presents RV variations with a period close to 498 days. Some possible hypotheses to explain the variability are briefly addressed and further observations are suggested.Instituto de Astrofísica de La PlataFacultad de Ciencias Astronómicas y Geofísicas2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfL30-L34http://sedici.unlp.edu.ar/handle/10915/82458enginfo:eu-repo/semantics/altIdentifier/issn/2041-8205info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/710/1/L30info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:31Zoai:sedici.unlp.edu.ar:10915/82458Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:32.186SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
title |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
spellingShingle |
On the multiplicity of the zero-age main-sequence O star Herschel 36 Arias, Julia Inés Ciencias Astronómicas Binaries: close Stars: early-type Stars: individual (Herschel 36) |
title_short |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
title_full |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
title_fullStr |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
title_full_unstemmed |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
title_sort |
On the multiplicity of the zero-age main-sequence O star Herschel 36 |
dc.creator.none.fl_str_mv |
Arias, Julia Inés Barbá, Rodolfo Héctor Gamen, Roberto Claudio Morrell, Nidia Irene Maíz Apellániz, Jesús Alfaro, Emilio J. Sota, Alfredo Walborn, Nolan Revere Moni Bidin, Cristian |
author |
Arias, Julia Inés |
author_facet |
Arias, Julia Inés Barbá, Rodolfo Héctor Gamen, Roberto Claudio Morrell, Nidia Irene Maíz Apellániz, Jesús Alfaro, Emilio J. Sota, Alfredo Walborn, Nolan Revere Moni Bidin, Cristian |
author_role |
author |
author2 |
Barbá, Rodolfo Héctor Gamen, Roberto Claudio Morrell, Nidia Irene Maíz Apellániz, Jesús Alfaro, Emilio J. Sota, Alfredo Walborn, Nolan Revere Moni Bidin, Cristian |
author2_role |
author author author author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Binaries: close Stars: early-type Stars: individual (Herschel 36) |
topic |
Ciencias Astronómicas Binaries: close Stars: early-type Stars: individual (Herschel 36) |
dc.description.none.fl_txt_mv |
We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multiple system, with at least three components detected in its spectrum. Based on our radial-velocity (RV) study, we propose a picture of a close massive binary and a more distant companion, most probably in wide orbit about each other. The orbital solution for the binary, whose components we identify as O9V and B0.5V, is characterized by a period of 1.5415 0.0006 days. With a spectral type O7.5V, the third body is the most luminous component of the system and also presents RV variations with a period close to 498 days. Some possible hypotheses to explain the variability are briefly addressed and further observations are suggested. Instituto de Astrofísica de La Plata Facultad de Ciencias Astronómicas y Geofísicas |
description |
We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multiple system, with at least three components detected in its spectrum. Based on our radial-velocity (RV) study, we propose a picture of a close massive binary and a more distant companion, most probably in wide orbit about each other. The orbital solution for the binary, whose components we identify as O9V and B0.5V, is characterized by a period of 1.5415 0.0006 days. With a spectral type O7.5V, the third body is the most luminous component of the system and also presents RV variations with a period close to 498 days. Some possible hypotheses to explain the variability are briefly addressed and further observations are suggested. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/82458 |
url |
http://sedici.unlp.edu.ar/handle/10915/82458 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/2041-8205 info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/710/1/L30 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf L30-L34 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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alira@sedici.unlp.edu.ar |
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