VOSA. Help and Documentation

Version 5.1, Oct 2016

1. Introduction
2. Input files
2.1. Upload files
2.2. VOSA file format
2.3. Single object
2.4. Manage files
2.5. Archiving
2.6. Filters
3. Objects
3.1. Coordinates
3.2. Distances
3.3. Extinction
4. Build SEDs
4.1. VO photometry
4.2. SED
4.3. Excess
5. Analysis
5.1. Model Fit
5.2. Bayes analysis
5.3. Template Fit
5.4. Templates Bayes
5.5. HR diagram
5.6. Upper Limits
5.7. Statistics
6. Save results
6.1. Download
6.2. SAMP
6.3. References
6.4. Log file
6.5. Plots
7. VOSA Architecture
8. Phys. Constants
9. FAQ
10. Use Case
11. Quality
12. Credits
13. Helpdesk
14. About

Introduction

VOSA (VO Sed Analyzer) is a tool designed to perform the following tasks in an automatic manner:

  • Read user photometry-tables.
  • Query several photometrical catalogs accessible through VO services (increases the wavelength coverage of the data to be analyzed).
  • Query VO-compliant theoretical models (spectra) and calculate their synthetic photometry.
  • Perform a statistical test to determine which model reproduces best the observed data (optionally fitting at the same time the optimal interstellar extinction).
  • Provide the likelihood of the model parameters (and the interestellar extinction).
  • Use the best-fit model as the source of a bolometric correction.
  • Provide the estimated bolometric luminosity for each source.
  • Generate a Hertzsprung-Russel diagram with the estimated parameters.
  • Provide an estimation of the mass and age of each source.