AMHRA

AMHRA is the French acronym for “Analysis an Modeling in High Angular Resolution”. The main objective of the AMHRA working group of MOIO/JMMC is to develop and/or provide astrophysical models and data analysis tools dedicated to the scientific exploitation of high angular and high spectral facilities (in particular ESO-VLTI instruments) by the astronomical community, including non-specialists in interferometry. Several tools are offered to the user that seeks to prepare, model, and analyze interferometric observations, notably those from the second generation of VLTI instruments (GRAVITY and MATISSE), which provide unprecedented capabilities on high spectral and spatial resolution.

The different types of tools offered or to be offered by AMHRA are:

• Polychromatic images from astrophysical models with fast computation time: astrophysical models implemented as numerical codes allowing to compute multi-wavelength intensity maps (cube of images) within a few seconds to a few minutes.
• Polychromatic images from a pre-calculated grid of astrophysical models: grids of pre-calculated multi-wavelength intensity maps (cube of images) generally based on state-of-the-art radiative transfer codes. These grids are given for models providing a realistic description of astronomical targets, but requiring large computation times (typically many hours). They cover a given region of the model parameter space.
• Spectro-interferometric observables from model images: tools to compute spectro-interferometric observables (e.g. visibilities, closure phases, differential phases, fluxes) from an input set of multi-wavelength intensity maps and corresponding to interferometric instruments.
• Analysis and model-fitting tools for spectro-interferometry: tools allowing to analyze and/or constraint the input parameters of astrophysical models (in particular those offered by AMHRA) from a direct comparison to the spectro-interferometric observations.

The model images provided by AMHRA can be used as input to other MOIO tools such as ASPRO, to prepare observations, and LITpro, to compare a given model to interferometric data.

Databases

TBD ( reprise oidb + rajout badcal, catalogues JSDC, JMDC )

MFIR

MFIR ( Model Fitting and Image Reconstruction ) TBD

SUV

As a new service of the JMMC, SUV (Service aux Utilisateurs du VLTI) provides, in four different sites (Nice, Grenoble, Paris, and Lyon), a complete support to the users of the 2nd generation VLTI instruments. This support consists of an individualized assistance (FAQ, questions submission, face-to-face meetings) that covers the preparation of observing proposals and observations, and the GRAVITY and MATISSE data reduction. It also includes an assistance in the critical use of the JMMC model fitting and image reconstruction softwares.

SUV is coordinated by the Observatoire de la Côte d'Azur (OCA) in Nice, with three other local nodes in Paris (Observatoire de Paris), Grenoble (IPAG), and Lyon (Observatoire de Lyon). A centralized helpdesk platform, hosted at OCA, collects all the user questions and requests for a face-to-face assistance in one of the four nodes. These questions and visit requests are then redirected to the relevant node. The SUV helpdesk is accessible through the JMMC webpage.

TOOLS

TBD