VOSA. Help and Documentation

Version 7.5, July 2022

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. Binary Fit
5.6. HR diagram
5.7. Upper Limits
5.8. 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
11.1. Stellar libraries
11.2. VO photometry
11.3. Binary Fit Quality
12. Credits
12.1. VOSA
12.2. Th. Spectra
12.3. Templates
12.4. Isochrones
12.5. VO Photometry
12.6. Coordinates
12.7. Distances
12.8. Dereddening
12.9. Extinction
13. Helpdesk
14. About
 
Appendixes
. Excess calculation
. Total flux calculation
. VOphot quality info

News

Version 7.5

July 2022

Distances

  • Parallaxes from Gaia DR3 are now accessible from VOSA. Older catalogues (Gaia EDR3, TGAS, Hiparchos and Karchenko have been removed).

Extinction

  • Gaia DR3 values of extinction (A0 taken from the I/355/gaiadr3 catalogue in Vizier) are now available

Build SEDs / VO photometry

Analyse SED

  • New treatment of the errors in luminosity. Now they are computed as follows: $$\left(\frac{\Delta L}{L}\right)^2 = \left(\frac{\Delta F_{obs}}{F_{obs}}\right)^2 + 4 \left(\frac{\Delta D}{D}\right)^2 $$
  • New models:

Others

  • Shorter links to the different sections of the Documentation can be created by clicking "(Click here for a short link to this documentation section)" at the bottom of the corresponding page.
Previous versions
  

(Click here for a short link to this documentation section)