The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)

Autores
Gamen, Roberto Claudio; Barba, Rodolfo Hector; Walborn, N. R.; Morrell, Nidia Irene; Arias, Julia Ines; Maíz Apellániz, J.; Sota, A.; Alfaro, E. J.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. We present the first orbital solution for the O-type supergiantstar HD 74194, which is the optical counterpart of the supergiant fastX-ray transient IGR J08408-4503. Methods. We measured the radialvelocities in the optical spectrum of HD 74194, and we determined theorbital solution for the first time. We also analysed the complexHα profle. Results. HD 74194 is a binary system composed of anO-type supergiant and a compact object in a short-period (P=9.5436± 0.0002 d) and high-eccentricity (e=0.63 ± 0.03) orbit.The equivalent width of the Hα line is not modulated entirely withthe orbital period, but seems to vary in a superorbital period (P=285± 10 d) nearly 30 times longer than the orbital one.
Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile
Fil: Walborn, N. R.. Space Telescope Science Institute; Estados Unidos
Fil: Morrell, Nidia Irene. Universidad de la Serena; Chile
Fil: Arias, Julia Ines. Universidad de la Serena; Chile
Fil: Maíz Apellániz, J.. Consejo Superior de Investigaciones Cientificas; España
Fil: Sota, A.. Consejo Superior de Investigaciones Cientificas; España
Fil: Alfaro, E. J.. Consejo Superior de Investigaciones Cientificas; España
Materia
Spectroscopic binaries
Early type stars
HD 74194 (estrella)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11237

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network_name_str CONICET Digital (CONICET)
spelling The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)Gamen, Roberto ClaudioBarba, Rodolfo HectorWalborn, N. R.Morrell, Nidia IreneArias, Julia InesMaíz Apellániz, J.Sota, A.Alfaro, E. J.Spectroscopic binariesEarly type starsHD 74194 (estrella)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims. We present the first orbital solution for the O-type supergiantstar HD 74194, which is the optical counterpart of the supergiant fastX-ray transient IGR J08408-4503. Methods. We measured the radialvelocities in the optical spectrum of HD 74194, and we determined theorbital solution for the first time. We also analysed the complexHα profle. Results. HD 74194 is a binary system composed of anO-type supergiant and a compact object in a short-period (P=9.5436± 0.0002 d) and high-eccentricity (e=0.63 ± 0.03) orbit.The equivalent width of the Hα line is not modulated entirely withthe orbital period, but seems to vary in a superorbital period (P=285± 10 d) nearly 30 times longer than the orbital one.Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Barba, Rodolfo Hector. Universidad de la Serena; ChileFil: Walborn, N. R.. Space Telescope Science Institute; Estados UnidosFil: Morrell, Nidia Irene. Universidad de la Serena; ChileFil: Arias, Julia Ines. Universidad de la Serena; ChileFil: Maíz Apellániz, J.. Consejo Superior de Investigaciones Cientificas; EspañaFil: Sota, A.. Consejo Superior de Investigaciones Cientificas; EspañaFil: Alfaro, E. J.. Consejo Superior de Investigaciones Cientificas; EspañaEdp Sciences2015-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11237Gamen, Roberto Claudio; Barba, Rodolfo Hector; Walborn, N. R.; Morrell, Nidia Irene; Arias, Julia Ines; et al.; The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel); Edp Sciences; Astronomy And Astrophysics; 583; 11-2015; 4-70004-6361enginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527140info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2015/11/aa27140-15/aa27140-15.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:06:40Zoai:ri.conicet.gov.ar:11336/11237instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:06:41.03CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
title The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
spellingShingle The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
Gamen, Roberto Claudio
Spectroscopic binaries
Early type stars
HD 74194 (estrella)
title_short The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
title_full The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
title_fullStr The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
title_full_unstemmed The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
title_sort The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
dc.creator.none.fl_str_mv Gamen, Roberto Claudio
Barba, Rodolfo Hector
Walborn, N. R.
Morrell, Nidia Irene
Arias, Julia Ines
Maíz Apellániz, J.
Sota, A.
Alfaro, E. J.
author Gamen, Roberto Claudio
author_facet Gamen, Roberto Claudio
Barba, Rodolfo Hector
Walborn, N. R.
Morrell, Nidia Irene
Arias, Julia Ines
Maíz Apellániz, J.
Sota, A.
Alfaro, E. J.
author_role author
author2 Barba, Rodolfo Hector
Walborn, N. R.
Morrell, Nidia Irene
Arias, Julia Ines
Maíz Apellániz, J.
Sota, A.
Alfaro, E. J.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Spectroscopic binaries
Early type stars
HD 74194 (estrella)
topic Spectroscopic binaries
Early type stars
HD 74194 (estrella)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims. We present the first orbital solution for the O-type supergiantstar HD 74194, which is the optical counterpart of the supergiant fastX-ray transient IGR J08408-4503. Methods. We measured the radialvelocities in the optical spectrum of HD 74194, and we determined theorbital solution for the first time. We also analysed the complexHα profle. Results. HD 74194 is a binary system composed of anO-type supergiant and a compact object in a short-period (P=9.5436± 0.0002 d) and high-eccentricity (e=0.63 ± 0.03) orbit.The equivalent width of the Hα line is not modulated entirely withthe orbital period, but seems to vary in a superorbital period (P=285± 10 d) nearly 30 times longer than the orbital one.
Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile
Fil: Walborn, N. R.. Space Telescope Science Institute; Estados Unidos
Fil: Morrell, Nidia Irene. Universidad de la Serena; Chile
Fil: Arias, Julia Ines. Universidad de la Serena; Chile
Fil: Maíz Apellániz, J.. Consejo Superior de Investigaciones Cientificas; España
Fil: Sota, A.. Consejo Superior de Investigaciones Cientificas; España
Fil: Alfaro, E. J.. Consejo Superior de Investigaciones Cientificas; España
description Aims. We present the first orbital solution for the O-type supergiantstar HD 74194, which is the optical counterpart of the supergiant fastX-ray transient IGR J08408-4503. Methods. We measured the radialvelocities in the optical spectrum of HD 74194, and we determined theorbital solution for the first time. We also analysed the complexHα profle. Results. HD 74194 is a binary system composed of anO-type supergiant and a compact object in a short-period (P=9.5436± 0.0002 d) and high-eccentricity (e=0.63 ± 0.03) orbit.The equivalent width of the Hα line is not modulated entirely withthe orbital period, but seems to vary in a superorbital period (P=285± 10 d) nearly 30 times longer than the orbital one.
publishDate 2015
dc.date.none.fl_str_mv 2015-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11237
Gamen, Roberto Claudio; Barba, Rodolfo Hector; Walborn, N. R.; Morrell, Nidia Irene; Arias, Julia Ines; et al.; The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel); Edp Sciences; Astronomy And Astrophysics; 583; 11-2015; 4-7
0004-6361
url http://hdl.handle.net/11336/11237
identifier_str_mv Gamen, Roberto Claudio; Barba, Rodolfo Hector; Walborn, N. R.; Morrell, Nidia Irene; Arias, Julia Ines; et al.; The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel); Edp Sciences; Astronomy And Astrophysics; 583; 11-2015; 4-7
0004-6361
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527140
info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2015/11/aa27140-15/aa27140-15.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Edp Sciences
publisher.none.fl_str_mv Edp Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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