VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster

By A. Bayo, C. Rodrigo, D. B. Navascues, E. Solano, R. Gutiérrez, M. Morales-Calderón, F. Allard. 2008

364 citations recorded by the source corpus.

Context. The physical properties of almost any kind of astronomical object can be derived by fitting synthetic spectra or photometry extracted from theoretical models to observational data. Aims. We want to develop an automatic procedure to perform this kind of fitting to a relatively large sample of members of a stellar association and apply this methodology to the case of Collinder 69. Methods. We combine the multiwavelength data of our sources and follow a work-flow to derive the physical parameters of the sources. The key step of the work-flow is performed by a new VO-tool, VOSA. All the steps in this process are done in a VO environment. Results. We present this new tool, and provide physical parameters such as T eff , gravity, luminosity, etc. for ~170 candidate members of Collinder 69, and an upper-limit for the age of this stellar association. Conclusions. This kind of study of star forming regions, clusters, etc. produces a huge amount of data, very tedious to analyse using the traditional methodology. Thus, they are excellent examples of where to apply the VO techniques.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/22360cb361ee49bf2b1abbd6c8ff15a5cb898a4c

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1. C. Mordasini
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Citations in the corpus

• PASTIS: Bayesian extrasolar planet validation. I. General framework, models, and performance (2014, background): “The spectra of all the stellar objects modelled for a given hypothesis are integrated in the bandpasses of interest to obtain their relative flux contributions (Bayo et al. 2008).”
• Discovery of a warm, dusty giant planet around HIP 65426 (2017, methodology): “We gather the optical to mid-IR photometry of the star using VOSA7 (Bayo et al. 2008).”
• The CARMENES search for exoplanets around M dwarfs (2018, methodology): “…law, the spectroscopic Teff as in Passegger et al. (2018), and the luminosities L by integrating the photometric stellar energy distribution collected for the CARMENES targets (Caballero et al. 2016) with the Virtual Observatory Spectral energy distribution Analyser (Bayo et al. 2008).”