VOSA. Help and Documentation

Version 7.0, July 2021

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
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

Phys. Constants

In some calculations performed by VOSA it is necesary to use values for certain physical constants. There are the values that we are using:

  • $L_{sun}$: 3.828E+33  , Solar Luminosity (erg s-1)
  • $R_{sun}$: 6.957e+10  , Solar Radius (cm)
  • $M_{sun}$: 1.9884098707E+33  , Solar Mass (g)
  • $G_{Nw}$: 6.6743E-8  , Newton Gravitational constant (cm3 g-1 s-2)
  • $\sigma_{SB}$: 5.670374419E-5  , Stefan-Boltzmann constant (erg cm-2 s-1 K-4)
  • ${\rm parsec}$: 3.0857E+18  , parsec to cm conversion (cm)
  • ${\rm c}$: 2.99792458e+10  , light speed (cm/s)

References: