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The VMC survey – XXXIV. Morphology of stellar populations in the Magellanic Clouds

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dc.contributor.author Youssouf, Dalal El
dc.contributor.author Cioni, Maria-Rosa L
dc.contributor.author Bell, Cameron P. M
dc.contributor.author Rubele, Stefano
dc.contributor.author Bekki, Kenji
dc.contributor.author Grijs, Richard de
dc.contributor.author Girardi, Leo
dc.contributor.author Ivanov, Valentin D
dc.contributor.author Matijevic, Gal
dc.contributor.author Niederhofer, Florian
dc.contributor.author Oliveira, Joana M
dc.contributor.author Ripepi, Vincenzo
dc.contributor.author Subramanian, S
dc.contributor.author van Loon, Jacco Th
dc.date.accessioned 2020-11-26T15:45:30Z
dc.date.available 2020-11-26T15:45:30Z
dc.date.issued 2019-11
dc.identifier.citation Monthly Notices of the Royal Astronomical Society, Vol. 490, No. 1, pp. 1076-1093 en_US
dc.identifier.issn 1365-2966
dc.identifier.uri http://prints.iiap.res.in/handle/2248/7417
dc.description Restricted Access © Royal Astronomical Society https://doi.org/10.1093/mnras/stz2400 en_US
dc.description.abstract The Magellanic Clouds are nearby dwarf irregular galaxies whose morphologies show different properties when traced by different stellar populations, making them an important laboratory for studying galaxy morphologies. We study the morphology of the Magellanic Clouds using data from the Visible and Infrared Survey Telescope for Astronomy survey of the Magellanic Clouds system. We used about 10 and 2.5 million sources across an area of ∼105 and ∼42 deg2 towards the Large and Small Magellanic Cloud (LMC and SMC), respectively. We estimated median ages of stellar populations occupying different regions of the near-infrared (J − Ks, Ks) colour–magnitude diagram. Morphological maps were produced and detailed features in the central regions were characterized for the first time with bins corresponding to a spatial resolution of 0.13 kpc (LMC) and 0.16 kpc (SMC). In the LMC, we find that main-sequence stars show coherent structures that grow with age and trace the multiple spiral arms of the galaxy, star-forming regions become dimmer as we progress in age, while supergiant stars are centrally concentrated. Intermediate-age stars, despite tracing a regular and symmetrical morphology, show central clumps and hints of spiral arms. In the SMC, young main-sequence stars depict a broken bar. Intermediate-age populations show signatures of elongation towards the Magellanic Bridge that can be attributed to the LMC–SMC interaction ∼200 Myr ago. They also show irregular central features suggesting that the inner SMC has also been influenced by tidal interactions. en_US
dc.language.iso en en_US
dc.publisher Oxford University Press on behalf of the Royal Astronomical Society en_US
dc.subject galaxies: interactions en_US
dc.subject Magellanic Clouds en_US
dc.subject galaxies: photometry en_US
dc.subject galaxies: stellar content en_US
dc.title The VMC survey – XXXIV. Morphology of stellar populations in the Magellanic Clouds en_US
dc.type Article en_US


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