Results 81 to 90 of about 22,483 (180)

A Detailed Analysis of the Milky Way Warp Based on Classical Cepheids

open access: yesThe Astrophysical Journal
Classical Cepheids (CCs) are important probes for the large-scale warp structure of the Milky Way. Using Gaia Data Release 3 CCs, we establish an optimal time-dependent warp model, where the warp height increases with radius following a power law, the ...
Xiaoyue Zhou   +5 more
doaj   +1 more source

Concluding Henrietta Leavitt's Work on Classical Cepheids in the Magellanic System and Other Updates of the OGLE Collection of Variable Stars [PDF]

open access: green, 2017
I. Soszyński   +11 more
openalex   +1 more source

ULTRA-LOW AMPLITUDE VARIABLES IN THE LARGE MAGELLANIC CLOUD—CLASSICAL CEPHEIDS, POP. II CEPHEIDS, RV TAU STARS, AND BINARY VARIABLES [PDF]

open access: bronze, 2009
J. Robert Buchler   +5 more
openalex   +1 more source

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. VII. Classical Cepheids in the Small Magellanic Cloud [PDF]

open access: green, 2010
I. Soszyński   +8 more
openalex   +3 more sources

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

open access: yesThe 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

open access: yesThe 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

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