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Extending the ICRF to Higher Radio Frequencies: Global Astrometric Results at 24 GHz

hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorJACOBS, C. S.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorLANYI, G. E.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorNAUDET, C. J.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorSOVERS, O. J.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorZHANG, L. D.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCHARLOT, P.
hal.structure.identifierNational Radio Astronomy Observatory [NRAO]
dc.contributor.authorFOMALONT, E. B.
hal.structure.identifierNASA Goddard Space Flight Center [GSFC]
dc.contributor.authorGORDON, D.
hal.structure.identifierNASA Goddard Space Flight Center [GSFC]
dc.contributor.authorMA, C.
dc.contributor.authorVLBI COLLABORATION, Kq
dc.date.issued2006
dc.date.conference2006
dc.description.abstractEnA celestial reference frame at K-band (24 GHz) has been constructed using eight 24-hour VLBA sessions which covered the full 24 hours of right ascension and declinations down to -40 deg. The resulting catalog contains 259 sources with median formal position uncertainties of 100 micro-arcsec in RA cos(dec) and 200 microarcsec in declination. In order to constrain the long arcs of the K-band catalog to those obtained with the S/X-band ICRF, four K-band high quality source positions well-separated in the sky were set to the S/X-band positions. After this registration, comparison of the K-band frame to an S/X-band ICRF-like frame shows agreement of 200 micro-arcsec in RA cos(dec) and 300 micro-arcsec in declination. The motivations for extending the ICRF to frequencies above 8 GHz are to use more compact sources less susceptible to structure changes in order to construct a more stable frame, to provide calibrators for phase referencing, and to support spacecraft navigation at higher frequencies.
dc.language.isoen
dc.source.titleInternational VLBI Service for Geodesy and Astrometry 2006 General Meeting Proceedings, Concepción, Chili, 9-11 January 2006, Eds. D. Behrend and K. D. Baver, NASA/CP-2006-214140,
dc.title.enExtending the ICRF to Higher Radio Frequencies: Global Astrometric Results at 24 GHz
dc.typeCommunication dans un congrès
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.page320
bordeaux.countryCL
bordeaux.title.proceedingInternational VLBI Service for Geodesy and Astrometry 2006 General Meeting Proceedings, Concepción, Chili, 9-11 January 2006, Eds. D. Behrend and K. D. Baver, NASA/CP-2006-214140,
bordeaux.conference.cityConcepción
bordeaux.peerReviewedoui
hal.identifierhal-00109338
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00109338v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=International%20VLBI%20Service%20for%20Geodesy%20and%20Astrometry%202006%20General%20Meeting%20Proceedings,%20Concepci%C3%B3n,%20Chili,%209-11%20January%202006,%20Eds.%2&rft.date=2006&rft.spage=320&rft.epage=320&rft.au=JACOBS,%20C.%20S.&LANYI,%20G.%20E.&NAUDET,%20C.%20J.&SOVERS,%20O.%20J.&ZHANG,%20L.%20D.&rft.genre=unknown


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