Integrated Visual Magnitude

[tony873004]

A certain globular cluster has a total of 10^4 stars; 100 of them have MV=0.0, and the rest have MV=+5.0. What is the integrated visual magnitude of the cluster?


Nowhere in our class notes or textbook is the term "integrated visual magnitude" defined. Googling it, I find the term used, but not defined.


If I had to guess how to do this problem, I'd just do a weighted average:

$$M_{cluster}=\frac{(100*0.0)+(9900*5.0)}{10000}$$

$$M_{cluster}=4.95$$

Which when rounded for significant figures = 5.0

 

[Astronuc]

See if these notes and examples help -

http://ottawa.rasc.ca/observers/an9811p9.html

I am a bit surprised that this is not covered in your textbook.

 

[Yasmeen073]

I was also given this question and I tried clicking the link and it doesn't work. How would I go about starting this? We too didn't learn anything about integrated visual magnitude so I have no idea what to do with this. Is there some type of formula or something?