Question

2. To measure the brightness of a star from earth, the brightness of the star Vega is
star. (a) What is the magnitude of Vega? (b) Suppose that light arriving from
used as a reference, and is assigned a relative intensity lo = 1. The magnitude m of
any given star is defined by m = 2.5 logl, where 1 is the relative intensity of that
another star has a relative intensity of 2.4. What is the magnitude of this star?​

Answer 1

Answer:

somehow

Step-by-step explanation:All i now is the mmagnitude of a star is absolute

Answer 2

(a) The magnitude of Vega = 0

(b) Magnitude of another star = 0.9505

Given is the information that the relative intesnity of the star Vega is 1. The formula to calculate the magnitude of a star is given by

m = 2.5×㏒I

where I = Relative Intenity of the star

Thus, substituting the relative intensity value of Vega, we get,

m of vega = 2.5×㏒1

= 0

Thus magnitude of Vega is zero.

(b) Given, the relative intensity of the other star is 2.4

Thus substituting in given formula,

m = 2.5×㏒2.4

= 2.5×0.3802

= 0.9505