Black holes have been found over a wide range of masses, from stellar remnants with
masses of 5–150 solar masses (M☉), to those found at the centres of galaxies with M> 105 …

Some compact objects observed in gravitational wave events have masses in the gap
between known neutron stars (NSs) and black holes (BHs). The nature of these mass gap …

We have determined stellar mass functions of 120 Milky Way globular clusters and massive
Large Magellanic Cloud/Small Magellanic Cloud star clusters based on a comparison of …

Recent work on metal-intermediate globular clusters (GCs) with [Fe/H]=− 1.5 and− 0.75 has
illustrated the theoretical behavior of multiple populations in photometric diagrams obtained …

The distribution of stars and stellar remnants (white dwarfs, neutron stars, and black holes)
within globular clusters holds clues about their formation and long-term evolution, with …

Context. The astrometry towards the Galactic bulge is hampered by high stellar crowding
and patchy extinction. This effect is particularly severe for optical surveys such as the …

Thanks to its exceptional near-infrared photometry, JWST can effectively contribute to the
discovery, characterisation, and understanding of multiple stellar populations in globular …

Recent studies of nearby globular clusters have discovered excess dark mass in their cores,
apparently in an extended distribution, and simulations indicate that this mass is composed …

We develop and disseminate effective point-spread functions and geometric-distortion
solutions for high-precision astrometry and photometry with the JWST NIRISS instrument …

The existence of compact stellar remnants in the mass range 2–5 M⊙ has long been
debated. This so-called lower-mass gap (LMG) was initially suggested by the lack of low …