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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/82458
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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:UNLP2025-10-22T16:56:22Zoai: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:13292025-10-22 16:56:22.574SEDICI (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 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/82458 |
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eng |
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eng |
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