It is a star cluster and is also known as object number two in the catalog: M2. M2 is one of the largest clusters of its kind, measuring approximately 150,000 stars and 150 light-years across. This object was discovered in the year 1746 by Jean Dominique Maraldi, a French astronomer and mathematician.Here is more information.
This is the spectrum that Ihave obtained from JS9:
Peak A obtains Zinc
Peak B obtains Selenium
Peak C obtains lanthanum
Peak D obtains europium
The total area is 57177973
Peak A area= 3820593.7--------------
Peak B area=3016878------------
Peak C area=2199117.9------------
Peak D area= 6122101.6-----------
The results are:
6.7% of Zinc
5.27% of Selenium
3.84% of lanthanum
10.7% of europium
I have found this article where they say that it is a very metallic global cluster. They don't mention the same elements as me but I think that it is remarkable that during my study I have notified three metallic elements (zinc, lanthanum and europium).