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Question
- star a is 12 parsecs away and star b is 20 parsecs away, which star has a greater parallax angle? how do
- the closest star to the sun is proxima centauri. it has a parallax angle of 0.77\. how far away is it in light - years?
- could parallax be used to determine the distance to any star? why or why not?
Step1: Convert parsecs a años - luz
La relación es 1 parsec = 3.26156 años - luz.
Step2: Calcular la distancia
Dado que la fórmula para la distancia $d$ en parsecs en función del ángulo de paralaje $\theta$ (en segundos de arco) es $d=\frac{1}{\theta}$, y $\theta = 0.77''$. Entonces $d=\frac{1}{0.77}\text{ parsecs}$. Luego, para convertir a años - luz, multiplicamos por 3.26156. Así, $d=\frac{1}{0.77}\times3.26156$.
$d=\frac{3.26156}{0.77}\approx4.24\text{ años - luz}$
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4.24 años - luz