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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20221006T103000
DTEND;TZID=Atlantic/Canary:20221006T113000
UID:iactalks-1606
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1606
CREATED:2022-10-06T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:A tale of caution: the tails of open clusters are much longer than 
 thought, but more difficult to find
DESCRIPTION:A tale of caution: the tails of open clusters are much longer t
 han thought, but more difficult to find\nDr. Henri Boffin\n\nThe tidal tai
 ls of stellar clusters are an important tool for studying the clusters&rsq
 uo; birth conditions, their evolution, coupling, and interaction with the 
 Galactic potential, and to understand how field stars populate the Milky W
 ay. Thanks to Gaia, much progress has been accomplished in finding tails o
 f open clusters. We will show here that the physical size of such tidal ta
 ils is larger than previously thought. Their identification requires combi
 ning the sophisticated analysis of the Gaia catalogue using machine learni
 ng techniques to the use of N-body simulations and the new compact converg
 ent point method. We will highlight recent results about the tails of the 
 Hyades and of NGC 752, which extend over several hundreds of parsecs and p
 resent puzzling asymmetries that likely provide constraints on the potenti
 al of Milky Way. Finally, we will also present the extension of our studie
 s to a large ensemble of open clusters and show how our analysis opens a c
 ompletely new window on the study of open clusters, whose potential will b
 e fully unleashed with future Gaia data releases.
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