Long Term Optical Spectroscopy of HD86161 (WR 16)

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 ob...

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Autores principales: Niemelä, Virpi Sinikka, Gamen, Roberto Claudio, Morrell, Nidia Irene
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Astronómicas
astrofísica
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/2076
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-2076
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
astrofísica
spellingShingle Ciencias Astronómicas
astrofísica
Niemelä, Virpi Sinikka
Gamen, Roberto Claudio
Morrell, Nidia Irene
Long Term Optical Spectroscopy of HD86161 (WR 16)
topic_facet Ciencias Astronómicas
astrofísica
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.
format Articulo
Articulo
author Niemelä, Virpi Sinikka
Gamen, Roberto Claudio
Morrell, Nidia Irene
author_facet Niemelä, Virpi Sinikka
Gamen, Roberto Claudio
Morrell, Nidia Irene
author_sort Niemelä, Virpi Sinikka
title Long Term Optical Spectroscopy of HD86161 (WR 16)
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)
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/2076
work_keys_str_mv AT niemelavirpisinikka longtermopticalspectroscopyofhd86161wr16
AT gamenrobertoclaudio longtermopticalspectroscopyofhd86161wr16
AT morrellnidiairene longtermopticalspectroscopyofhd86161wr16
bdutipo_str Repositorios
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