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Is a binary fraction-age relation responsible for the lack of EHB binaries in globular clusters?
(EDP SCIENCES S A, 2008-03)
Context. The recently-discovered lack of close binaries, among extreme horizontal branch (EHB) stars in Galactic globular clusters,
has thus far constituted a major puzzle, in view of the fact that blue subdwarf stars – ...
Lithium on the lower red giant branch of five Galactic globular clusters
(EDP Sciences, 2022-01-01)
Context. Lithium is one of the few elements produced during Big Bang nucleosynthesis in the early universe. Moreover, its fragility makes it useful as a proxy for stellar environmental conditions. As such, the lithium ...
The Globular Cluster NGC 5286. II. Variable Stars2
(2010)
We present the results of a search for variable stars in the globular cluster NGC 5286, which has recently been suggested to be associated with the Canis Major dwarf spheroidal galaxy. 57 variable stars were detected, only ...
Variable Stars in Large Magellanic Cloud Globular Clusters. I. NGC 1466
(2011)
This is the first in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to better understand how the RR Lyrae stars in Oosterhoff-intermediate ...
The Gaia-ESO Survey Mg-Al anti-correlation in iDR4 globular clusters
(EDP SCIENCES S A, 2017)
We use Gaia-ESO (GES) Survey iDR4 data to explore the Mg-Alanti-correlation in globular clusters that were observed as calibrators, as a demonstration of the quality of Gaia-ESO Survey data and analysis. The results compare ...