Astrophysics: Binary Star System (11 of 40) Velocity Curves and Mass Determination 2

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In this video I will calculate the mass of a binary system when mass1 = mass2.
Next video in this series can be found at:
• Astrophysics: Binary S...

[@livingasrb007]

2:20 Sir you messed up with the 2. it should be kept in denominator of LHS

[@ffiinnnnoo9988]

Sorry to be 'that guy' but the derivation is wrong, the 2 should be on the top of the fraction when finding the mass, other than that a very helpful video, search for an example of Plaskett’s binary system for more information :)

[@MichelvanBiezen]

Much appreciated. You are correct, the 2 should be placed in the denominator on the left side.

[@livingasrb007]

@@MichelvanBiezen yup i also found that

[@SHISHIRBOGATI-g1r]

Thanks sir, Love from Nepal

[@MichelvanBiezen]

Welcome to the channel!

[@astrofox2409]

When calculating the distance between the two objects, shouldn't it be sin(theta) = tan(theta) = R/2d?

[@MichelvanBiezen]

for small angles sin(theta) = tan (theta) = theta

[@sumaiyatahsin4707]

Sir, Angular Diameter ( theta) = Actual diameter / Distance
Can't this be used ? ( To find R)

[@MichelvanBiezen]

Did you try it and get the same answer?

[@sumaiyatahsin4707]

@@MichelvanBiezen sir wasn't R suppose to be "2× the value you got (62.6 × 10^6)" ?
And if I do it in the way as I mentioned, the result of R=91.7×10^6 km ( so R/2= 45.8 ×10^6 km)