Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688

Spectral observations of Wolf-Rayet stars HD 90657 and HD 117688 were made at the Cerro Tololo Interamerican Observatory, in Chile. These stars have been classified by earlier authors as intermediate objects between the two sequences of W-R stars, presenting in their spectra lines of both carbón and...

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Detalles Bibliográficos
Autor principal: Niemelä, Virpi Sinikka
Formato: Articulo Comunicacion
Lenguaje:Español
Publicado: 1971
Materias:
Astronomía
Galaxias
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/98468
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-98468
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Astronomía
Galaxias
spellingShingle Astronomía
Galaxias
Niemelä, Virpi Sinikka
Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688
topic_facet Astronomía
Galaxias
description Spectral observations of Wolf-Rayet stars HD 90657 and HD 117688 were made at the Cerro Tololo Interamerican Observatory, in Chile. These stars have been classified by earlier authors as intermediate objects between the two sequences of W-R stars, presenting in their spectra lines of both carbón and nitrogen. However, our observations do not confirm this classification, the observed spectra look like “normal” WN stars. In addition, HD 90657, earlier classified as WN4—C -J- OB, shows variations of radial velocity of the order of 130 km/s and variations of type V/R in the shape of the emission lines.
format Articulo
Comunicacion
author Niemelä, Virpi Sinikka
author_facet Niemelä, Virpi Sinikka
author_sort Niemelä, Virpi Sinikka
title Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688
title_short Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688
title_full Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688
title_fullStr Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688
title_full_unstemmed Peculiar classified Wolf-Rayet stars, HD 90657 and HD 117688
title_sort peculiar classified wolf-rayet stars, hd 90657 and hd 117688
publishDate 1971
url http://sedici.unlp.edu.ar/handle/10915/98468
work_keys_str_mv AT niemelavirpisinikka peculiarclassifiedwolfrayetstarshd90657andhd117688
bdutipo_str Repositorios
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