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SUMMARY:Ages\, metallicities and structure of stellar clusters in the Mage
 llanic Bridge
DTSTART;VALUE=DATE-TIME:20230322T145500Z
DTEND;VALUE=DATE-TIME:20230322T145700Z
DTSTAMP;VALUE=DATE-TIME:20241114T092440Z
UID:indico-contribution-233@meetings.aip.de
DESCRIPTION:Speakers: Raphael A. P. Oliveira (IAG - USP)\nThe Magellanic B
 ridge is a tidally-stripped structure located between the Magellanic Cloud
 s and contains hundreds of stellar clusters and associations\, which can h
 elp understanding the origin and evolution of the entire Magellanic Clouds
 -Milky Way (MW) system. Two main competing models describe the formation o
 f the pair LMC-SMC: the LMC captured the SMC about 2 Gyr ago and they are 
 in a bound orbit around the MW\, or it is an old interacting sys- tem in i
 ts first perigalactic passage\, falling into the MW potential ~2 Gyr ago. 
 The Bridge should have been formed during a collision between the Clouds a
 round 200 Myr ago\, imply- ing kinematic signatures\, as well as age and m
 etallicity gradients along its extension. This work combines deep photomet
 ric data from VISCACHA and SMASH surveys in order to ex- plore this questi
 on\, by homogeneously deriving age\, metallicity\, distance\, structural p
 arame- ters and mass of 35 Bridge objects with modern statistical tools su
 ch as Markov chain Monte Carlo and machine learning. In particular\, the m
 ass determination corrected by completeness can help to estimate the Bridg
 e stellar mass and constrain the dynamical models. A spectro- scopic follo
 w-up in the CaII triplet region is also carried out for clusters older tha
 n 1 Gyr in the Bridge and other SMC regions\, to derive metallicity and ra
 dial velocity which\, combined with Gaia proper motions\, allow us to obta
 in a 6D phase-space vector. Preliminary results show a good agreement betw
 een VISCACHA and SMASH data and also that\, despite the presence of some o
 ld objects at larger distances\, the clusters in the middle of the Bridge 
 are younger (~ 10-100 Myr) and more metal-rich than those closer to the SM
 C Wing. In this poster\, we will review the recent results of the VISCACHA
  collaboration\, present a detailed approach to age and metallicity gradie
 nts in the Bridge\, and discuss the evidence on the most probable for- mat
 ion model of the pair LMC-SMC.\n\nhttps://iaus379.aip.de/event/20/contribu
 tions/233/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/233/
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