Published June 17, 2019
| Version v1
Conference paper
A new generation fringe tracker
Contributors
Others:
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Université Caddi Ayyad, Faculté des Sciences et Techniques ; Université Cadi Ayyad [Marrakech] (UCA)
- Finnish Centre for Astronomy with ESO (FINCA) ; University of Turku
Description
The VLTI has a huge potential for the study of Active Galactic Nuclei. It allows to resolve the BLR by phase differential interferometry and to make images of the inner dust « torus ». The first generation VLTI instruments AMBER and MIDI allowed studies of the size-luminosity of the inner dust structures and showed strong departures from the simple torus structure. The 2nd generation instrument MATISSE has already proven, during its commissioning, that i twill allow to increase the sample of AGNs observed in the mid infrared and it is expected to allow imaging of the inner dust on a few Seyfert 2 targets. GRAVITY recently obtained the first BLR resolution and also the first K band images of NGC1068. However, the potential of the VLTI is strongly limited by the sensitivity of its Adaptive Optics and Fringe Tracker. This communication presents a proposal for a new fringe tracking concept combined with a J band VLTI visitor instrument optimized for AGN observations. It discusses the scientific potential, the concept and the sensitivity of that combination.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-03058931
- URN
- urn:oai:HAL:hal-03058931v1