Results 191 to 200 of about 3,055 (216)
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A-Type Horizontal-Branch Stars

1975
Horizontal-branch stars have attracted our attention as conspicuous examples of highly evolved population-II stars. Recent developments in the theoretical calculations of the internal structure of horizontal-branch stars (see Rood, 1970; Demarque and Mengel, 1971; Sweigart and Demarque, 1972) enable detailed studies on the evolutionary tracks ...
openaire   +1 more source

Convective Overshooting in Horizontal Branch Stars

1987
The evolution of horizontal branch stars up to the starting of the thermally pulsing regime of the He-burning shell is investigated with the aid of a non local treatment of the core convection. The formalism follows the overshooting model by Bressan et al (1981) which opposes to the classical, local schemes for overshooting and semiconvection currently
C. Chiosi, G. Bertelli, A. Bressan
openaire   +1 more source

Anomalies in horizontal branch stars of globular clusters and SdB stars

EAS Publications Series, 2005
I review the chemical abundance measurements of blue horizontal branch stars within the theoretical framework of diffusion and radiative levitation. The present observational scenario reports normal abundances for stars cooler than T eff ~ 11 000 K, while largely anomalous abundances for hotter stars are found. In particular, large He depletions and
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Clean catalogues of blue horizontal-branch stars using Gaia EDR3

Astronomy and Astrophysics, 2021
Ingrid D Pelisoli
exaly  

The absolute magnitude of field metal-poor horizontal branch stars

Monthly Notices of the Royal Astronomical Society, 1998
Raffaele G Gratton
exaly  

Evaporation of Jupiter-like planets orbiting extreme horizontal branch stars

Monthly Notices of the Royal Astronomical Society, 2011
Noam Soker
exaly  

MORGOTH: incorporating horizontal branch modelling into star formation history determinations

Monthly Notices of the Royal Astronomical Society, 2018
Alessandro Savino   +2 more
exaly  

Rotation, planets, and the 'second parameter' of the horizontal branch

Monthly Notices of the Royal Astronomical Society, 2000
Noam Soker
exaly  

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