NGC 3521 is a Intermediate Spiral Galaxy in the Leo constellation. NGC 3521 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.
.PNG)
Here's the graphic of its energy spectrum made with Simbad:
I've analyzed the simbad dot plot. I have selected 6 points and I have converted µ from to armstrong. Then I applied the formula of the dossier.
SCIENTIFIC ARTICLES:
I have compared my results with a scientific article (https://iopscience.iop.org/article/10.1088/0004-637X/773/1/4/meta) (https://iopscience.iop.org/article/10.1088/0004-637X/773/1/4/pdf) In it he explains that the elements found in NGC 3521 are oxygen and hydrogen and carbon..