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The VMC Survey. XVIII. Radial dependence of the low-mass, 0.55--0.82 stellar mass function in the Galactic globular cluster 47 Tucanae
Chaoli Zhang, Chengyuan Li, Richard de Grijs +12
We use near-infrared observations obtained as part of the {\sl Visible and Infrared Survey Telescope for Astronomy} (VISTA) Survey of the Magellanic Clouds (VMC), as well as two co…
The star cluster mass--galactocentric radius relation: Implications for cluster formation
Weijia Sun, Richard de Grijs, Zhou Fan +1
Whether or not the initial star cluster mass function is established through a universal, galactocentric-distance-independent stochastic process, on the scales of individual galaxi…
IAU Commission 37 "Star Clusters and Associations" Legacy report
Giovanni Carraro, Richard de Grijs, Bruce Elmegreen +5
It is widely accepted that stars do not form in isolation but result from the fragmentation of molecular clouds, which in turn leads to star cluster formation. Over time, clusters…
The VMC survey - XVII. The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
Maria-Rosa L. Cioni, Kenji Bekki, Leo Girardi +8
In this study we use multi-epoch near-infrared observations from the VISTA survey of the Magellanic Cloud system (VMC) to measure the proper motion of different stellar populations…
New quasars behind the Magellanic Clouds. Spectroscopic confirmation of near-infrared selected candidates
Valentin D. Ivanov, Maria-Rosa L. Cioni, Kenji Bekki +7
Quasi--stellar objects (quasars) located behind nearby galaxies provide an excellent absolute reference system for astrometric studies, but they are difficult to identify because o…
The VMC Survey - XX. Identification of new Cepheids in the Small Magellanic Cloud
M. I. Moretti, G. Clementini, V. Ripepi +9
We present Ks -band light curves for 299 Cepheids in the Small Magellanic Cloud (SMC) of which 288 are new discoveries that we have identified using multi-epoch near-infrared photo…
The dynamical importance of binary systems in young massive star clusters
Richard de Grijs, Chengyuan Li, Aaron M. Geller
Characterization of the binary fractions in star clusters is of fundamental importance for many fields in astrophysics. Observations indicate that the majority of stars are found i…
The VMC survey - XVI. Spatial variation of the cluster-formation activity in the innermost regions of the Large Magellanic Cloud
Andrés E. Piatti, Richard de Grijs, Vincenzo Ripepi +6
We present results based on photometry of star clusters in the Large Magellanic Cloud (LMC), distributed throughout the central part of the galaxy's bar and the 30 Do…
The VMC Survey - XIV. First results on the look-back time star-formation rate tomography of the Small Magellanic Cloud
Stefano Rubele, Leo Girardi, Leandro Kerber +17
We analyse deep images from the VISTA survey of the Magellanic Clouds in the YJKs filters, covering 14 sqrdeg (10 tiles), split into 120 subregions, and comprising the main body an…
The search for longitude: Preliminary insights from a 17th Century Dutch perspective
Richard de Grijs
In the 17th Century, the Dutch Republic played an important role in the scientific revolution. Much of the correspondence among contemporary scientists and their associates is now…