Suppose you measure the parallax angle for a particular star to be 0.1 arcsecond. The distance to this star is A) 10 light-years.B) 10 parsecs.C) 0.1 light-year.D) 0.1 parsec.E)…

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asked Aug 21, 2020 82.9k views

1 Answer

Yoav Schniederman · Answer 1 · 2020-08-27T19:16:08+0000

Answer:

B) 10 parsecs

Step-by-step explanation:

The distance of a star measured with the parallax method is given by:

$d=(1)/(\theta)$

where

d is the distance, in Parsec

$\theta$ is the parallax angle, in arcseconds

For the star in the problem, the parallax angle is

$\theta=0.1''$

therefore, the distance of the star is

d=(1)/(0.1'')=10 pc

so, 10 parsecs.