COLLIOUD, Arnaud; CHARLOT, P.; LAMBERT, Sébastien

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COLLIOUD, Arnaud
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]

CHARLOT, P.
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]

LAMBERT, Sébastien
Systèmes de Référence Temps Espace [SYRTE]

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Communication dans un congrès

Ce document a été publié dans

IVS 2022 General Meeting Proceedings, IVS 2022 General Meeting Proceedings, 12th General Meeting of the International VLBI Service for Geodesy and Astrometry (IVS), 2022-03-28, On line. 2022-04

Résumé en anglais

The Bordeaux VLBI Image Database provides to the international VLBI community almost 8,000 VLBI images of radio sources at S and X band and some others at K and Q band. Such images are of interest for astrometric and astrophysical applications, such as the determination of the VLBI jet direction. We developed a fully automatic method to extract this direction from any VLBI image, which we then applied to all BVID images, resulting in the production of 9,215 jet directions for 1,221 sources. Comparing the mean jet directions over all epochs at X band to the Gaia EDR3 (optical) − ICRF3 S/X (radio) offset vector directions indicates that the offset vector is aligned within 30 • of the jet direction in roughly half of the sources, thereby confirming previous studies.< Réduire

Mots clés en anglais

VLBI

Database

Imaging

Source Structure

Jet Direction

ICRF

Gaia

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804