Calcolatore Luminosita Stellare
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Luminosita (L_sun)
85.5067 L_sun
Luminosity (W)32,731,953,769,225,675,000,000,000,000.000 W
Luminosity (L_sun) vs Absolute Magnitude
Formula
## Luminosity from Absolute Magnitude **L / L_sun = 10^((M_sun - M_star) / 2.5)** where M_sun = 4.83 (visual). A star 5 magnitudes brighter than the Sun is 100 times as luminous.
Esempio Risolto
A star with M = 0.
- 01L/L_sun = 10^((4.83 - 0) / 2.5)
- 02= 10^(1.932) ≈ 85.5
- 03This star is about 85.5 times as luminous as the Sun.
Domande Frequenti
What determines a star's luminosity?
Primarily its mass and evolutionary stage. More massive stars are much more luminous.
Why use M_sun = 4.83?
That is the Sun's absolute visual magnitude. For bolometric calculations, use M_bol,sun = 4.74.
What is the luminosity range of stars?
From about 10^-4 L_sun (faint red dwarfs) to over 10^6 L_sun (the most luminous supergiants).