The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)

Context. Since the discovery, with the EINSTEIN satellite, of strong X-ray emission associated with HD 93162 (≡WR 25), this object has been predicted to be a colliding-wind binary system. However, radial-velocity variations that would prove the suspected binary nature have yet to be found. Aims. We...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Gamen, Roberto Claudio, Gosset, E., Morrell, Nidia Irene, Niemelä, Virpi Sinikka, Sana, H., Nazé, Y., Rauw, G., Barbá, Rodolfo Héctor, Solivella, Gladys Rebeca
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Ciencias Astronómicas
Stars: binaries: spectroscopic
Stars: individual: HD 93162
Stars: Wolf-Rayet
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83059
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83059
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
Stars: binaries: spectroscopic
Stars: individual: HD 93162
Stars: Wolf-Rayet
spellingShingle Ciencias Astronómicas
Stars: binaries: spectroscopic
Stars: individual: HD 93162
Stars: Wolf-Rayet
Gamen, Roberto Claudio
Gosset, E.
Morrell, Nidia Irene
Niemelä, Virpi Sinikka
Sana, H.
Nazé, Y.
Rauw, G.
Barbá, Rodolfo Héctor
Solivella, Gladys Rebeca
The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)
topic_facet Ciencias Astronómicas
Stars: binaries: spectroscopic
Stars: individual: HD 93162
Stars: Wolf-Rayet
description Context. Since the discovery, with the EINSTEIN satellite, of strong X-ray emission associated with HD 93162 (≡WR 25), this object has been predicted to be a colliding-wind binary system. However, radial-velocity variations that would prove the suspected binary nature have yet to be found. Aims. We spectroscopically monitored this object to investigate its possible variability to address this discordance. Methods. We compiled the largest available radial-velocity data set for this star to look for variations that might be due to binary motion. We derived radial velocities from spectroscopic data acquired mainly between 1994 and 2006, and searched these radial velocities for periodicities using different numerical methods. Results. For the first time, periodic radial-velocity variations are detected. Our analysis definitively shows that the Wolf-Rayet star WR 25 is an eccentric binary system with a probable period of about 208 days.
format Articulo
Articulo
author Gamen, Roberto Claudio
Gosset, E.
Morrell, Nidia Irene
Niemelä, Virpi Sinikka
Sana, H.
Nazé, Y.
Rauw, G.
Barbá, Rodolfo Héctor
Solivella, Gladys Rebeca
author_facet Gamen, Roberto Claudio
Gosset, E.
Morrell, Nidia Irene
Niemelä, Virpi Sinikka
Sana, H.
Nazé, Y.
Rauw, G.
Barbá, Rodolfo Héctor
Solivella, Gladys Rebeca
author_sort Gamen, Roberto Claudio
title The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)
title_short The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)
title_full The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)
title_fullStr The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)
title_full_unstemmed The first orbital solution for the massive colliding-wind binary HD 93162 (≡WR 25)
title_sort first orbital solution for the massive colliding-wind binary hd 93162 (≡wr 25)
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/83059
work_keys_str_mv AT gamenrobertoclaudio thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT gossete thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT morrellnidiairene thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT niemelavirpisinikka thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT sanah thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT nazey thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT rauwg thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT barbarodolfohector thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT solivellagladysrebeca thefirstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT gamenrobertoclaudio firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT gossete firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT morrellnidiairene firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT niemelavirpisinikka firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT sanah firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT nazey firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT rauwg firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT barbarodolfohector firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
AT solivellagladysrebeca firstorbitalsolutionforthemassivecollidingwindbinaryhd93162wr25
bdutipo_str Repositorios
_version_ 1764820488241020933

Ejemplares similares