Results 111 to 120 of about 2,843,859 (384)
The Astrophysical Journal, 2023 We present precise photometric estimates of stellar parameters, including effective temperature, metallicity, luminosity classification, distance, and stellar age, for nearly 26 million stars using the methodology developed in the first paper of this ...
Yang Huang +20 more
doaj +1 more source
PROBING FINAL STAGES OF STELLAR EVOLUTION WITH X-RAY OBSERVATIONS OF SN 2013ej [PDF]
, 2015 Massive stars shape their surroundings with mass loss from winds during their lifetimes. Fast ejecta from supernovae (SNe), from these massive stars, shock this circumstellar medium. Emission generated by this interaction provides a window into the final
S. Chakraborti +10 more
semanticscholar +1 more source
The evolution of the solar–stellar activity [PDF]
Journal of Atmospheric and Solar-Terrestrial Physics, 2020 We present a brief review of observational results contributing to modern ideas on the evolution of stellar activity. Basic laws, derived for both rotation-age and activity-rotation relationships, allow us to trace how the activity of low-mass stars changes with age during their stay on the main sequence.
openaire +3 more sources
Uncertainties in AGB Evolution and Nucleosynthesis
, 2016 We summarise the evolution and nucleosynthesis in AGB and Super-AGB stars. We then examine the major sources of uncertainty, especially mass-loss.Comment: 8 pages, no figures.
Karakas, Amanda, Lattanzio, John
core +1 more source
Decoding the dual role of autophagy in cancer through transcriptional and epigenetic regulation
FEBS Letters, EarlyView.Transcriptional and epigenetic regulation controls autophagy, which exerts context‐dependent effects on cancer: Autophagy suppresses tumorigenesis by maintaining cellular homeostasis or promotes tumor progression by supporting survival under stress. In this “In a Nutshell” article, we explore the intricate mechanisms of the dual function of autophagy ...
Young Suk Yu, Ik Soo Kim, Sung Hee Baek
wiley +1 more source
TESS Asteroseismology of β Hydri: A Subgiant with a Born-again Dynamo
The Astrophysical JournalThe solar-type subgiant β Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been measured directly, it was estimated to be near 27 days.
Travis S. Metcalfe +14 more
doaj +1 more source
Stellar Evolution and Convection in 3D Hydrodynamic Simulations of a Complete Burning Phase
GalaxiesOur understanding of stellar evolution and nucleosynthesis is limited by the uncertainties coming from the complex multi-dimensional processes in stellar interiors, such as convection and nuclear burning. Three-dimensional stellar models can improve this
Federico Rizzuti +8 more
doaj +1 more source
The galactic globular cluster M5 (NGC 5904) as a particle physics laboratory
EPJ Web of Conferences, 2013 Globular clusters have been used for a long time to test stellar evolution theories, and in particular to constrain novel forms of energy loss in low-mass stars.
Redondo J. +4 more
doaj +1 more source
Inflow, Outflow, Yields, and Stellar Population Mixing in Chemical Evolution Models [PDF]
, 2016 Chemical evolution models are powerful tools for interpreting stellar abundance surveys and understanding galaxy evolution. However, their predictions depend heavily on the treatment of inflow, outflow, star formation efficiency (SFE), the stellar ...
B. Andrews +3 more
semanticscholar +1 more source
Autophagy in cancer and protein conformational disorders
FEBS Letters, EarlyView.Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley +1 more source