Browsing by Subject "stars: chemically peculiar"

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Chemodynamical study of two CEMP-no stars from the Hamburg/ESO Survey

Shejeelammal, J; Goswami, A (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)

The Carbon-Enhanced Metal-Poor (CEMP) stars with no enhancement of neutron-capture elements, the so-called CEMP-no stars are believed to be the direct descendants of first-generation stars and provide a unique opportunity ...
Non-local Thermodynamic Equilibrium Abundance Analyses of the Extreme Helium Stars V652Her and HD144941

Pandey, G; Lambert, D. L (IOP Publishing, 2017-10)

Optical high-resolution spectra of V652 Her and HD 144941, the two extreme helium stars with exceptionally low C / He ratios, have been subjected to a non-LTE abundance analysis using the tools TLUSTY and SYNSPEC. De fi ning ...
SALT revisits DY Cen: a rapidly evolving strontium-rich single helium star

Jeffery, C. S; Kameswara Rao, N; Lambert, D. L (Oxford University Press on behalf of the Royal Astronomical Society, 2020-04)

The hydrogen-deficient star DY Cen has been reported as an R CrB-type variable, an extreme helium star (with some hydrogen), and as a single-lined spectroscopic binary. It has been associated with a dramatic change in ...

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