Cepheid variable stars - Open Access .click

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Toward a Comprehensive Grid of Cepheid Models with MESA. IV. Modest Effects of Rotation on Blue Loops

The Astrophysical Journal Supplement Series
Evolutionary tracks for 2–8 M _⊙ stars, with metallicities of Z = 0.014, 0.006, and 0.002, including rotation, are computed with Modules for Experiments in Stellar Astrophysics ( MESA ).
Radoslaw Smolec, Rajeev Singh Rathour, Vincent Hocdé +2 more
doaj +1 more source

New Hydronephrosis in the Native Kidney Is Associated with the Development of De Novo Urinary Bladder Urothelial Carcinoma in Patients with Post-Kidney Transplantation. [PDF]

Healthcare (Basel), 2023
Ho CJ +7 more
europepmc +1 more source

Toward a Comprehensive Grid of Cepheid Models with MESA. I. Uncertainties of the Evolutionary Tracks of Intermediate-mass Stars

The Astrophysical Journal Supplement Series
Helium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops—the part of the evolutionary track at which the instability strip is crossed.
O. Ziółkowska +5 more
doaj +1 more source

Spatial Age Distribution of Classical Cepheids in Spiral Galaxies: The Cases of M31 and M33

The Astrophysical Journal Letters
Classical Cepheids can be used as age indicators due to well-established period–age and period–age–color relations. G. De Somma et al. refined these relations by including a metallicity term and different mass–luminosity assumptions.
Giulia De Somma +7 more
doaj +1 more source

Study of Nonlinear Models of Oscillatory Systems by Applying an Intelligent Computational Technique. [PDF]