Results 71 to 80 of about 266 (162)

Toward a Comprehensive Grid of Cepheid Models with MESA. III. Evolutionary and Pulsation Relations for Models with Core and Envelope Overshooting

open access: yesThe Astrophysical Journal Supplement Series
Evolutionary tracks for 2–8 M _⊙ models, covering a [Fe/H] = −1.0 ( Z = 0.0014) to [Fe/H] = +0.2 ( Z = 0.02) metallicity range, are computed with Modules for Experiments in Stellar Astrophysics, MESA , to investigate evolutionary and pulsation properties
Radoslaw Smolec   +4 more
doaj   +1 more source

Is Crater II Disrupting?

open access: yesThe Astronomical Journal
Crater II (CraII) is a very intriguing low surface brightness and extended galaxy in the vicinity of our Galaxy. Motivated by its huge area and the number of RR Lyrae stars (RRLSs) detected near to its core, we performed a follow-up campaign to get deep ...
A. Katherina Vivas   +7 more
doaj   +1 more source

Discovery of an Extremely Luminous Type II Cepheid in the Andromeda Giant Stellar Stream: Evidence for a Hierarchical Triple with an Inner Binary Merger

open access: yesThe Astrophysical Journal Letters
We report the discovery of LAMOST J0041+3948, the most luminous post-asymptotic giant-branch (AGB) Type II Cepheid known, located in the Andromeda Giant Stellar Stream.
Pinjian Chen   +9 more
doaj   +1 more source

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

Tumor immune microenvironment of self-identified African American and non-African American triple negative breast cancer. [PDF]

open access: yesNPJ Breast Cancer, 2022
Marczyk M   +15 more
europepmc   +1 more source

Integrated analysis of whole blood oxylipin and cytokine responses after bacterial, viral, and T cell stimulation reveals new immune networks. [PDF]

open access: yesiScience, 2023
Villain E   +15 more
europepmc   +1 more source

The Rotational and Magnetic Properties of Polaris from Long-term Spectropolarimetric Monitoring

open access: yesThe Astrophysical Journal
Polaris is a highly unusual Cepheid with observed properties that are difficult to reconcile with stellar evolutionary models. Since the initial detection of Polaris’ magnetic field in 2020, we have conducted a magnetic monitoring campaign with the ...
James A. Barron   +2 more
doaj   +1 more source

Characterizing advanced breast cancer heterogeneity and treatment resistance through serial biopsies and comprehensive analytics. [PDF]

open access: yesNPJ Precis Oncol, 2021
Li A   +17 more
europepmc   +1 more source

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