<p>Say three galaxies, with equal fluxes, <span class="math-container">$f_1$</span>, merge. How could I calculate their combined flux?</p>

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2021-04-04T22:12:15.587Z
How much do you know about each galaxy? 3D maps of stars and dust ready for some computational dynamics? I think this question has context and you haven't yet shared any. If it's related to a class or a problem set in a book, then can you add what topics been introduced so far? *Thanks!*
uhoh
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2021-04-05T07:38:20.250Z
Merging may induce star bursts and AGN activity, but also quenching, so the combined luminosity could go both ways. The result depends to a large degree on the mass ratio of the systems, as well as their relative inclination angle. As @uhoh says, much more details are needed, but even with those it’s not possible to predict the outcome in general.
pela
<observational-astronomy><galaxy><flux>
How to calculate the flux of a galaxy merger?
nocappp
# How to calculate the flux of a galaxy merger?

(Asked by: username_0 on 2021-04-04)

Say three galaxies, with equal fluxes, $f\_1$, merge. How could I calculate their combined flux?

**Tags:** observational-astronomy, galaxy, flux
> **Comments:**
> **username_1**: How much do you know about each galaxy? 3D maps of stars and dust ready for some computational dynamics? I think this question has context and you haven't yet shared any. If it's related to a class or a problem set in a book, then can you add what topics been introduced so far? *Thanks!*  
> **username_2**: Merging may induce star bursts and AGN activity, but also quenching, so the combined luminosity could go both ways. The result depends to a large degree on the mass ratio of the systems, as well as their relative inclination angle. As @uhoh says, much more details are needed, but even with those it’s not possible to predict the outcome in general.  

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## 0 answers

