Searching Gaia for extended structure in Globular Clusters

Pete B. Kuzma*, Annette M.N. Ferguson, Jorge Peñarrubia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A growing number of studies are revealing that many Milky Way globular clusters possess extended stellar structures beyond their traditional boundaries. Just how ubiquitous these structures are, and how they originate, are key questions to explore. In this contribution, we present a Bayesian technique that we have developed to separate probable members of globular clusters from the dominant Milky Way fore/background at large clustercentric radii and hence facilitate quantitative analyses of these intriguing structures. We demonstrate the promise of our method by showing how it recovers the known extended features around Palomar 5 and NGC 7089.
Original languageEnglish
Pages (from-to)468-471
Number of pages4
JournalProceedings of the International Astronomical Union
Publication statusPublished - 11 Mar 2020


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