- #1
AllHailBritania
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Homework Statement
Find period of the star's rotation assuming that the axis of rotation is perpendicular to the direction of view.
Given data:
- distance d = 25 pc
- bolometric luminosity observed m = 8m
- effective temperature T = 4000 K
- bolometric absolute brightness of the Sun Mm = 4,75m
- luminosity of the Sun Js = 4 * 1025 W
I also know that the star's spectrum line corresponding to the wavelength exhibits extreme variation of +/- Δλ (symmetrical widening of the line), and the |Δλ| / λ= 10-4.
I would be greatful for your help.