@article{NiederhoferCioniSchmidtetal.2022,
  author    = {Niederhofer, Florian and Cioni, Maria-Rosa L. and Schmidt, Thomas and Bekki, Kenji and de Grijs, Richard and Ivanov, Valentin D. and Oliveira, Joana M. and Ripepi, Vincenzo and Subramanian, Smitha and van Loon, Jacco Th},
  title     = {The VMC survey - XLVI. Stellar proper motions in the centre of the Large Magellanic Cloud},
  series = {Monthly notices of the Royal Astronomical Society},
  volume    = {512},
  journal   = {Monthly notices of the Royal Astronomical Society},
  number    = {4},
  publisher = {Oxford University Press},
  address   = {Oxford},
  issn      = {0035-8711},
  doi       = {10.1093/mnras/stac712},
  pages     = {5423 -- 5439},
  year      = {2022},
  abstract  = {We present proper motion (PM) measurements within the central region of the Large Magellanic Cloud (LMC), using near-infrared data from the VISTA survey of the Magellanic Cloud system (VMC). This work encompasses 18 VMC tiles covering a total sky area of similar to 28 deg(2). We computed absolute stellar PMs from multiepoch observations in the K-s filter over time baselines between similar to 12 and 47 months. Our final catalogue contains similar to 6322 000 likely LMC member stars with derived PMs. We employed a simple flat-rotating disc model to analyse and interpret the PM data. We found a stellar centre of rotation (alpha(0) = 79.95 degrees(+0.22)(-0.23), delta(0) = -69.31 degrees(+0.12)(-0.11)) that is in agreement with that resulting from Hubble Space Telescope data. The inferred viewing angles of the LMC disc (i = 33.5 degrees(+1.2)(-1.3), Theta = 129.8 degrees(+1.9)(-1.9)) are in good agreement with values from the literature but suggest a higher inclination of the central parts of the LMC. Our data confirm a higher rotation amplitude for the young (less than or similar to 0.5 Gyr) stars compared to the intermediate-age/old (greater than or similar to 1 Gyr) population, which can be explained by asymmetric drift. We constructed spatially resolved velocity maps of the intermediate-age/old and young populations. Intermediate-age/old stars follow elongated orbits parallel to the bar's major axis, providing first observational evidence for x(1) orbits within the LMC bar. In the innermost regions, the motions show more chaotic structures. Young stars show motions along a central filamentary bar structure.},
  language  = {en}
}
@article{VanarajNiederhoferGoudfrooij2021,
  author    = {Vanaraj, Viswajith and Niederhofer, Florian and Goudfrooij, Paul},
  title     = {Role of host galaxy in the formation of multiple stellar populations},
  series = {Monthly notices of the Royal Astronomical Society},
  volume    = {507},
  journal   = {Monthly notices of the Royal Astronomical Society},
  number    = {1},
  publisher = {Oxford University Press},
  address   = {Oxford},
  issn      = {0035-8711},
  doi       = {10.1093/mnras/stab2094},
  pages     = {282 -- 299},
  year      = {2021},
  abstract  = {Even after decades of research, the origin of multiple stellar populations in globular clusters (GCs) remains enigmatic. The question as to whether the galaxy environment plays a role in their formation remains unanswered. To that extent, we analysed two classical (>10 Gyr old) Large Magellanic Cloud GCs, NGC 1786 and NGC 1898, using imaging data from Hubble Space Telescope to compare and contrast them with ancient Galactic GCs to assess systematic differences that might exist between their abundance variations. We calculated their red giant branch width, subtracted the effect of metallicity, and compared it with the available data on Galactic GCs by plotting them against initial and current cluster mass. We see that the two clusters follow the same general trend as that of the Galactic GCs, and Galactic GCs from different progenitors follow the same general trend as one another, indicating that the galaxy environment may only play a minor role in the formation of multiple stellar populations within GCs.},
  language  = {en}
}
@article{PiattideGrijsRipepietal.2015,
  author    = {Piatti, Andres E. and de Grijs, Richard and Ripepi, Vincenzo and Ivanov, Valentin D. and Cioni, Maria-Rosa L. and Marconi, Marcella and Rubele, Stefano and Bekki, Kenji and For, Bi-Qing},
  title     = {The VMC survey - XVI. Spatial variation of the cluster formation activity in the innermost regions of the Large Magellanic Cloud},
  series = {Monthly notices of the Royal Astronomical Society},
  volume    = {454},
  journal   = {Monthly notices of the Royal Astronomical Society},
  number    = {1},
  publisher = {Oxford Univ. Press},
  address   = {Oxford},
  issn      = {0035-8711},
  doi       = {10.1093/mnras/stv2054},
  pages     = {839 -- 848},
  year      = {2015},
  language  = {en}
}