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dc.date.accessioned 2019-11-13T15:19:20Z
dc.date.available 2019-11-13T15:19:20Z
dc.date.issued 2013-08-01
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/85509
dc.description.abstract We present optical spectroscopy, astrometry, radio and X-ray observations of the runaway binary LP 400-22. We refine the orbital parameters of the system based on our new radial velocity observations. Our parallax data indicate that LP 400-22 is significantly more distant (3σ lower limit of 840pc) than initially predicted. LP 400-22 has a tangential velocity in excessof 830 km s-1; it is unbound to the Galaxy. Our radio and X-ray observations fail to detect a recycled millisecond pulsar companion, indicating that LP 400-22 is a double white dwarf system. This essentially rules out a supernova runaway ejection mechanism. Based on its orbit, a Galactic Centre origin is also unlikely. However, its orbit intersects the locations of several globular clusters; dynamical interactions between LP 400-22 and other binary stars or a central black hole in a dense cluster could explain the origin of this unusual binary. en
dc.format.extent 3582-3589 es
dc.language en es
dc.subject Binaries: close es
dc.subject Galaxy: kinematics and dynamics es
dc.subject Galaxy: stellar content es
dc.subject Stars: individual: LP 400-22 es
dc.subject Stars: individual: WD 2234+222 es
dc.subject White dwarfs es
dc.title The runaway binary LP 400-22 is leaving the Galaxy en
dc.type Articulo es
sedici.identifier.other doi:10.1093/mnras/stt1282 es
sedici.identifier.other eid:2-s2.0-84884128717 es
sedici.identifier.issn 0035-8711 es
sedici.creator.person Kilic, M. es
sedici.creator.person Gianninas, A. es
sedici.creator.person Brown, W. R. es
sedici.creator.person Harris, H. C. es
sedici.creator.person Dahn, C.C. es
sedici.creator.person Agüeros, M. A. es
sedici.creator.person Heinke, C. O. es
sedici.creator.person Kenyon, S. J. es
sedici.creator.person Panei, Jorge Alejandro es
sedici.creator.person Camilo, F. es
sedici.subject.materias Ciencias Astronómicas es
sedici.description.fulltext true es
mods.originInfo.place Instituto de Astrofísica de La Plata es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Monthly Notices of the Royal Astronomical Society es
sedici.relation.journalVolumeAndIssue vol. 434, no. 4 es
sedici.rights.sherpa * Color: green * Pre-print del autor: si * Post-print del autor: si * Versión de editor/PDF:si * Condiciones: >>Pre-print si only be posted prior to acceptance >>Pre-print on author's personal website, employer website, free public server or pre-prints in subject area >>Pre-print must be accompanied by set statement (see link) >>Pre-print set statement must be amended upon publication (see policy) >>Publisher's version/PDF may be used >>Author's Post-print on Institutional repositories or Central repositories >>Publisher's version/PDF on Institutional repositories or Central repositories, with all rights reserved (see policy) >>Published source must be acknowledged >>Must link to publisher version >>Set phrase to accompany archived copy (see policy) * Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0035-8711/es/


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)