Results 61 to 70 of about 112,697 (340)
, 2003 In this paper, we present the results of 3-dimensional collapse simulations of rotating stars for a range of stellar progenitors. We find that for the fastest spinning stars, rotation does indeed modify the convection above the proto-neutron star, but it
Chris L. Fryer +5 more
core +1 more source
FEBS Open Bio, EarlyView.Two biomarkers of Alzheimer's disease, amyloid β‐peptide (Aβ) and tau, induce the transformation of U‐251 and other glioblastoma cell lines into neurotoxic A1‐like reactive astrocytes. This transformation is produced by cytokines and is followed by upregulation of PMCA activity and isoform expression, and is closely associated with inflammation, as ...
María Berrocal +2 more
wiley +1 more source
The Relationship of Stellar Radius Inflation to Rotation and Magnetic Starspots at 10–670 Myr
The Astrophysical Journal LettersActive, low-mass stars are widely observed to have radii that are larger than predicted by standard stellar models. Proposed mechanisms for this radius inflation generally involve stellar magnetism, either in the form of added pressure support in the ...
Lyra Cao, Keivan G. Stassun
doaj +1 more source
Starspot Activity without Pulsation in the Binary System KIC 5444392 Revisited
Universe, 2023 We revisited the short-period (∼1.5 days) binary system KIC 5444392, which shows quasi-period modulated light variations. Previous studies indicated that these variations might be caused by stellar pulsations.
Mengqi Jin +3 more
doaj +1 more source
Stellar Rotation in UCL/LCC with TESS
, 2021 In recent years, we have been using K2's high precision photometry to probe stellar variability and stellar rotation to lower masses and lower amplitudes than has ever been done before. Younger stars are generally more rapidly rotating and have larger star spots than older stars of similar masses.
Rebull, L. M. +3 more
openaire +4 more sources
, 2016 The recent discovery of double main sequences in the young, massive star cluster NGC 1856 has caught significant attention. The observations can be explained by invoking two stellar generations with different ages and metallicities or by a single ...
de Grijs, Richard +3 more
core +2 more sources
The evolution of single B-type stars with a large angular momentum content [PDF]
, 2014 The database of intermediate mass rotating stellar models presented in the past years by the Geneva Stellar Evolution Group can be used to build synthetic stellar populations that fully account for the effects of stellar rotation.
Granada, Anahí, Haemmerlé, Lionel
core +1 more source
The impact of frailty syndrome on skeletal muscle histology: preventive effects of exercise
FEBS Open Bio, EarlyView.Frailty syndrome exacerbates skeletal muscle degeneration via increased ECM deposition and myofiber loss. This study, using a murine model, demonstrates that endurance exercise attenuates these histopathological alterations, preserving muscle integrity. Findings support exercise as a viable strategy to counteract frailty‐induced musculoskeletal decline
Fujue Ji +3 more
wiley +1 more source
A study of stellar population of intermediate-age globular cluster NGC 2249
Results in Physics, 2020 The Large Magellanic Cloud (LMC) star cluster NGC 2249 has been found to exhibit an extended main-sequence turn-off (eMSTO) in the color-magnitude diagram (CMD) derived from the data of the Hubble Space Telescope (HST).
Zhongmu Li +4 more
doaj
Living with a Red Dwarf: The Rotation–Age Relationships of M Dwarfs
The Astrophysical Journal Letters, 2023 Age is a fundamental stellar property, yet for many stars, it is difficult to reliably determine. For M dwarfs, it has been notoriously so. Due to their lower masses, core hydrogen fusion proceeds at a much slower rate in M dwarfs than it does in more ...
Scott G. Engle, Edward F. Guinan
doaj +1 more source