839 citations · 2.6k across the 17 of their papers we have counts for
17 papers
The complex stellar system M 22: confirming abundance variations with high precision differential measurements
M. McKenzie, D. Yong, A. F. Marino +8
M 22 (NGC 6656) is a chemically complex globular cluster-like system reported to harbour heavy element abundance variations. However, the extent of these variations and the origin…
A Critique of the Spite Plateau, and the Astration of Primordial Lithium
J. E. Norris, D. Yong, A. Frebel +1
We investigate the distribution of the lithium abundances, A(Li), of metal-poor dwarf and subgiant stars within the limits 5500 K < Teff < 6700 K, -6.0 < [Fe/H] < -1.5, and logg >…
Multiple Stellar Populations in Globular Clusters with JWST: a NIRCam view of 47 Tucanae
A. P. Milone, A. F. Marino, A. Dotter +11
We use images collected with the near-infrared camera (NIRCam) on board the James Webb Space Telescope and with the Hubble Space Telescope (HST) to investigate multiple populations…
Constraining the original composition of the gas forming first-generation stars in globular clusters
M. V. Legnardi, A. P. Milone, L. Armillotta +13
Disentangling distinct stellar populations along the red-giant branches (RGBs) of Globular Clusters (GCs) is possible by using the pseudo two-color diagram dubbed chromosome map (C…
Evidence of globular cluster abundance anomalies in the SMC intermediate-age cluster Kron 3
C. Salgado, G. S. Da Costa, D. Yong +5
Using spectra obtained with the VLT/FORS2 and Gemini-S/GMOS instruments we have investigated carbon, nitrogen and sodium abundances in a sample of red giants in the Small Magellani…
R-Process elements from magnetorotational hypernovae
D. Yong, C. Kobayashi, G. S. Da Costa +11
Neutron-star mergers were recently confirmed as sites of rapid-neutron-capture (r-process) nucleosynthesis. However, in Galactic chemical evolution models, neutron-star mergers alo…