45 citations · 116 across the 6 of their papers we have counts for
6 papers
On the AGB stars of M 4: A robust disagreement between spectroscopic observations and theory
B. T. MacLean, S. W. Campbell, A. M. Amarsi +7
Several recent spectroscopic investigations have presented conflicting results on the existence of Na-rich asymptotic giant branch (AGB) stars in the Galactic globular cluster M4 (…
AGB subpopulations in the nearby globular cluster NGC 6397
B. T. MacLean, S. W. Campbell, G. M. De Silva +5
It has been well established that Galactic Globular clusters (GCs) harbour more than one stellar population, distinguishable by the anti-correlations of light element abundances (C…
NGC 6752 AGB Stars Revisited: I. Improved AGB temperatures remove apparent overionisation of Fe I
S. W. Campbell, B. T. MacLean, V. D'Orazi +5
A recent study reported a strong apparent depression of Fe I, relative to Fe II, in the AGB stars of NGC 6752. This depression is much greater than that expected from the neglect o…
An extreme paucity of second population AGB stars in the normal globular cluster M4
B. T. MacLean, S. W. Campbell, G. M. De Silva +4
Galactic Globular clusters (GCs) are now known to harbour multiple stellar populations, which are chemically distinct in many light element abundances. It is becoming increasingly…
Towards 21st Century Stellar Models: Star Clusters, Supercomputing, and Asteroseismology
S. W. Campbell, T. N. Constantino, V. D'Orazi +8
Stellar models provide a vital basis for many aspects of astronomy and astrophysics. Recent advances in observational astronomy -- through asteroseismology, precision photometry, h…
O, Na, Ba and Eu abundance patterns in open clusters
B. T. MacLean, G. M. De Silva, J. Lattanzio
Open clusters are historically regarded as single-aged stellar populations representative of star formation within the Galactic disk. Recent literature has questioned this view, ba…