Apparent Magnitude of Binary Star System

AI Thread Summary
In a discussion about calculating the apparent magnitude of a binary star system, participants clarify that while brightness can be added, apparent magnitude operates on a logarithmic scale. The original poster expresses confusion about whether to simply add the magnitudes of both stars. Experts confirm that this approach is incorrect due to the logarithmic nature of the scale. Understanding the distinction between brightness and magnitude is crucial for accurate calculations. The conversation emphasizes the importance of applying the correct mathematical principles when dealing with astronomical measurements.
Gammage
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I am having trouble understanding this problem. It has several parts describing a binary star system. The last part ask for the apparent magnitude of the combined light from both stars, if they were viewed as a single point. I guess my first thought was to add them, but I'm worried because apparent magnitude is a logarithmic scale. Am I overthinking this one?

Thanks
 
Astronomy news on Phys.org
Hi Gammage! :smile:

Yes, you're right to worry …

brightness is additive, but magnitude isn't. :wink:
 

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