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Accueil > Séminaires > Archive des séminaires d’Utinam > 2013

Amelia Bayo

Atelier : VOSA (virtual observatory SED analyzer) and other virtual observatory tools

vendredi 11 octobre 2013, 14h

salle de conférences de l’observatoire

Amelia Bayo, Max-Planck-Institut für Astronomie, Heidelberg, Allemagne

Cet atelier comprendra une démonstration de l’outil de l’observatoire virtuel VOSA pour l’analyse de distribution d’énergie spectrale

Amelia Bayo donnera également le même jour à 10h30 un séminaire intitulé "Activity, rotation and preservation of disks. Further tests to understand the formation and evolution of brown dwarfs".

Résumé :

The advent of new and more sensitive surveys providing photometry at many wavelength ranges and covering large sky areas is pushing astronomy towards a change of paradigm where small groups, and not only large consortia, need to analyze large multi-wavelength data sets as part of their everyday work. In this context, the Virtual Observatory (VO), as a common frame to exchange not only observational data but also theoretical models, plays a very important role.

VOSA is a public web-tool developed by the Spanish Virtual Observatory ( and designed to help users to :

  1. build objects SEDs combining user data with photometry from VO services,
  2. analyze them comparing observed photometry with synthetic photometry from theoretical models or observational templates, using different techniques (chi-square fit, Bayesian analysis) and thus
  3. estimate physical parameters for the observed objects.

VOSA is in operation since 2008 (Bayo et al, 2008, A&A 492,277B)