Liên quan Messier 87 Messier 77 Messier 4 Messier 5 Messier 66 Messier 102 Messier 110 Messier 15 Messier 100 Messier 74
Tài liệu tham khảo WikiPedia: Messier 15 http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=... http://venus.mporzio.astro.it/~marco/gc/cluster_4.... //arxiv.org/abs/0707.1602 //arxiv.org/abs/0801.0871 //arxiv.org/abs/1004.2255 //arxiv.org/abs/1008.2755 //arxiv.org/abs/1108.4402 //doi.org/10.1086%2F168061 //doi.org/10.1086%2F345574
