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
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/11237
Ver los metadatos del registro completo
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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 Técnicas2025-10-22T11:36:33Zoai: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:34982025-10-22 11:36:34.208CONICET 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 |
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article |
| status_str |
publishedVersion |
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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 |
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eng |
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eng |
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openAccess |
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application/pdf application/pdf |
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Edp Sciences |
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Edp Sciences |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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