Globular clusters (GCs) exhibit star-to-star variations in specific elements (eg, He, C, N, O,
Na, Al) that bear the hallmark of high-temperature H-burning. These abundance variations …

We review the multiple population (MP) phenomenon of globular clusters (GCs): ie, the
evidence that GCs typically host groups of stars with different elemental abundances and/or …

We identify a low-metallicity () Ly-emitting galaxy at with evidence of a strong Balmer jump,
arising from nebular continuum. While Balmer jumps are sometimes observed in low-redshift …

Gaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for≃
220 million sources in the wavelength range 330 nm≤ λ≤ 1050 nm (XP spectra). Synthetic …

Abstract The Apache Point Observatory Galactic Evolution Experiment (APOGEE), one of the
programs in the Sloan Digital Sky Survey III (SDSS-III), has now completed its systematic …

In this paper we describe a new UV-initiative Hubble Space Telescope project (GO-13297)
that will complement the existing F606W and F814W database of the Advanced Camera for …

Stars lose a significant amount of angular momentum between birth and death, implying that
efficient processes transporting it from the core to the surface are active. Space …

We present a model for the concurrent formation of globular clusters (GCs) and
supermassive stars (SMSs,≳ 103 M⊙) to address the origin of the HeCNONaMgAl …

Ages have been derived for 55 globular clusters (GCs) for which Hubble Space Telescope
Advanced Camera for Surveys photometry is publicly available. For most of them, the …

Recent progress in studies of globular clusters has shown that they are not simple stellar
populations, but rather are made up of multiple generations. Evidence stems both from …