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dc.contributor.author Gamen, Roberto Claudio
dc.contributor.author Barba, Rodolfo Hector
dc.contributor.author Walborn, N. R.
dc.contributor.author Morrell, Nidia Irene
dc.contributor.author Arias, Julia Ines
dc.contributor.author Maíz Apellániz, J.
dc.contributor.author Sota, A.
dc.contributor.author Alfaro, E. J.
dc.date.available 2017-01-12T19:32:42Z
dc.date.issued 2015-11
dc.identifier.citation 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
dc.identifier.issn 0004-6361
dc.identifier.uri http://hdl.handle.net/11336/11237
dc.description.abstract 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.
dc.format application/pdf
dc.language.iso eng
dc.publisher Edp Sciences
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject Spectroscopic binaries
dc.subject Early type stars
dc.subject HD 74194 (estrella)
dc.subject.classification Astronomía
dc.subject.classification Ciencias Físicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel)
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-01-11T13:26:55Z
dc.journal.volume 583
dc.journal.pagination 4-7
dc.journal.pais Francia
dc.journal.ciudad Paris
dc.description.fil 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
dc.description.fil Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile
dc.description.fil Fil: Walborn, N. R.. Space Telescope Science Institute; Estados Unidos
dc.description.fil Fil: Morrell, Nidia Irene. Universidad de la Serena; Chile
dc.description.fil Fil: Arias, Julia Ines. Universidad de la Serena; Chile
dc.description.fil Fil: Maíz Apellániz, J.. Consejo Superior de Investigaciones Cientificas; España
dc.description.fil Fil: Sota, A.. Consejo Superior de Investigaciones Cientificas; España
dc.description.fil Fil: Alfaro, E. J.. Consejo Superior de Investigaciones Cientificas; España
dc.journal.title Astronomy And Astrophysics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201527140
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2015/11/aa27140-15/aa27140-15.html


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)