Long Term Optical Spectroscopy of HD86161 (WR 16)
- Autores
- Niemelä, Virpi Sinikka; Gamen, Roberto Claudio; Morrell, Nidia Irene
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present results of optical spectroscopy of the emission line star HD 86161=WR 16, the central star of an ejecta ring nebula, obtained between 1971 and 2000 in the wavelength domain 3200-7300 Á. The spectrum of type WN8 is rich in He and N lines, in particular Hell 5-n series emission lines are observed up to high quantum numbers. We analyze possible radial velocity variations observed between different epochs, and find stochastic variations with possible superimposed epoch to epoch variations. These last variations could be due to the orbital motion of an eccentric long period binary system.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
astrofísica - 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:10915/2076
Ver los metadatos del registro completo
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Long Term Optical Spectroscopy of HD86161 (WR 16)Niemelä, Virpi SinikkaGamen, Roberto ClaudioMorrell, Nidia IreneCiencias AstronómicasastrofísicaWe present results of optical spectroscopy of the emission line star HD 86161=WR 16, the central star of an ejecta ring nebula, obtained between 1971 and 2000 in the wavelength domain 3200-7300 Á. The spectrum of type WN8 is rich in He and N lines, in particular Hell 5-n series emission lines are observed up to high quantum numbers. We analyze possible radial velocity variations observed between different epochs, and find stochastic variations with possible superimposed epoch to epoch variations. These last variations could be due to the orbital motion of an eccentric long period binary system.Facultad de Ciencias Astronómicas y Geofísicas2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf199-202http://sedici.unlp.edu.ar/handle/10915/2076enginfo: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:UNLP2025-09-29T10:48:37Zoai:sedici.unlp.edu.ar:10915/2076Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 10:48:38.974SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| title |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| spellingShingle |
Long Term Optical Spectroscopy of HD86161 (WR 16) Niemelä, Virpi Sinikka Ciencias Astronómicas astrofísica |
| title_short |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| title_full |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| title_fullStr |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| title_full_unstemmed |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| title_sort |
Long Term Optical Spectroscopy of HD86161 (WR 16) |
| dc.creator.none.fl_str_mv |
Niemelä, Virpi Sinikka Gamen, Roberto Claudio Morrell, Nidia Irene |
| author |
Niemelä, Virpi Sinikka |
| author_facet |
Niemelä, Virpi Sinikka Gamen, Roberto Claudio Morrell, Nidia Irene |
| author_role |
author |
| author2 |
Gamen, Roberto Claudio Morrell, Nidia Irene |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas astrofísica |
| topic |
Ciencias Astronómicas astrofísica |
| dc.description.none.fl_txt_mv |
We present results of optical spectroscopy of the emission line star HD 86161=WR 16, the central star of an ejecta ring nebula, obtained between 1971 and 2000 in the wavelength domain 3200-7300 Á. The spectrum of type WN8 is rich in He and N lines, in particular Hell 5-n series emission lines are observed up to high quantum numbers. We analyze possible radial velocity variations observed between different epochs, and find stochastic variations with possible superimposed epoch to epoch variations. These last variations could be due to the orbital motion of an eccentric long period binary system. Facultad de Ciencias Astronómicas y Geofísicas |
| description |
We present results of optical spectroscopy of the emission line star HD 86161=WR 16, the central star of an ejecta ring nebula, obtained between 1971 and 2000 in the wavelength domain 3200-7300 Á. The spectrum of type WN8 is rich in He and N lines, in particular Hell 5-n series emission lines are observed up to high quantum numbers. We analyze possible radial velocity variations observed between different epochs, and find stochastic variations with possible superimposed epoch to epoch variations. These last variations could be due to the orbital motion of an eccentric long period binary system. |
| publishDate |
2001 |
| dc.date.none.fl_str_mv |
2001 |
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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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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/2076 |
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| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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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 |
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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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application/pdf 199-202 |
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