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dc.contributor.authorLoinard, Laurent
dc.contributor.authorRodríguez, Luis F.
dc.contributor.authorGómez, Laura
dc.contributor.authorCantó, Jorge
dc.contributor.authorRaga, Alejandro C.
dc.contributor.authorGoodman, Alyssa
dc.contributor.authorArce, Héctor G.
dc.date.accessioned2011-09-07T18:29:09Z
dc.date.issued2010
dc.identifier.citationLoinard, Laurent, Luis F. Rodríguez, Laura Gómez, Jorge Cantó, Alejandro C. Raga, Alyssa A. Goodman, and Héctor G. Arce. 2010. A reassessment of the kinematics of PV Cephei based on accurate proper motion measurements. Revista Mexicana de Astronomía y Astrofísica 46: 375-383.en_US
dc.identifier.issn0185-1101en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:5126068
dc.description.abstractWe present two Very Large Array observations of the pre-main-sequence star PV Cephei, taken with a separation of 10.5 years. These data show that the proper motions of this star are \(\mu_{\alpha} = +10.9 \pm 3.0 \ mas \ yr^{-1}\); \(\mu_{\delta} +0.2 \pm 1.8 \ mas \ yr^{-1}\), very similar to those – previously known – of HD 200775, the B2Ve star that dominates the illumination of the nearby reflection nebula NGC 7023. This result suggests that PV Cephei is not a rapidly moving run-away star as suggested by previous studies. The large velocity of PV Cephei had been inferred from the systematic eastward displacement of the bisectors of successive pairs of Herbig Haro knots along its flow. These systematic shifts might instead result from an intrinsic dissymmetry in the ejection mechanisms, or from an asymmetric distribution of the circumstellar material.en_US
dc.description.sponsorshipAstronomyen_US
dc.language.isoen_USen_US
dc.publisherUniversidad Nacional Autónoma de Méxicoen_US
dc.relation.hasversionhttp://arxiv.org/abs/1008.0379v1en_US
dash.licenseOAP
dc.subjectastrometryen_US
dc.subjectstarsen_US
dc.subjectpre-main-sequenceen_US
dc.subjectISMen_US
dc.subjectindividualen_US
dc.subjectPV CEPen_US
dc.subjectjets and outflowsen_US
dc.titleA Reassessment of the Kinematics of PV Cephei Based on Accurate Proper Motion Measurementsen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalRevista Mexicana de Astronomía y Astrofísicaen_US
dash.depositing.authorGoodman, Alyssa
dc.date.available2011-09-07T18:29:09Z
dash.affiliation.otherHarvard-Smithsonian Center for Astrophysicsen_US
dash.contributor.affiliatedGoodman, Alyssa


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