Results 101 to 110 of about 13,442,946 (252)

Magnetic Doppler imaging of early-type stars

open access: yes, 2010
Doppler imaging of early-type magnetic stars is the most advanced method to interpret their line profile variations. DI allows us to study directly a complex interplay between chemical spots, magnetic fields, and the mass loss.
Iosif Romanyuk   +7 more
core   +1 more source

The Kraft Break Sharply Divides Low-mass and Intermediate-mass Stars

open access: yesThe Astrophysical Journal
Main-sequence stars transition at mid-F spectral types from slowly rotating (cooler stars) to rapidly rotating (hotter stars), a transition known as the Kraft Break and attributed to the disappearance of the outer convective envelope, causing magnetic ...
Alexa C. Beyer, Russel J. White
doaj   +1 more source

Coexistence of internal gravity waves and Tayler-Spruit magnetic fields in the radiative cores of low-mass stars

open access: yesAstronomy & Astrophysics
Context. The Tayler-Spruit dynamo (TSD) is capable of generating a small-scale magnetic field in the differentially rotating, stably stratified layers of stars. Its activity was recently observed in numerical simulations.
Amard L., Mathis S.
doaj   +1 more source

Final Evolution of a Low-Mass Star. I

open access: yesThe Astrophysical Journal, 1970
Low mass star evolution from helium burning to white dwarf, describing red giant and mass loss stages in ...
William K. Rose, Richard L. Smith
openaire   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

The Magnetic Activity of Low-Mass Stars [PDF]

open access: yes, 2019
The purpose of this research project is to study magnetically active low mass stars using data obtained with the Kepler space telescope. A sample of low mass stars was identified in the Kepler Objects of Interest (KOI) database by selecting stars with a ...
Mota, Tholang
core  

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

open access: yesFEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise   +5 more
wiley   +1 more source

Nucleosynthesis in low- and intermediate-mass stars: An overview [PDF]

open access: yesTours symposium on nuclear physics III, 1998
An overview of the main phases of the evolution of low- and intermediate-mass stars is presented, and the different types of nucleosynthesis operating from the pre-main sequence up to and including the asymptotic giant branch phase described. The surface abundance modifications brought by each nucleosynthesis process is also briefly discussed.
openaire   +2 more sources

Low Mass Young Stars at Metre Wavelengths

open access: yes, 2018
Presentation slides for a seminar I was invited to give at the National University of Ireland Maynooth on February 2nd, 2018 (https://www.maynoothuniversity.ie/news-events/low-mass-young-stars-metre-wavelengths). Speaker: Dr. Rachael Ainsworth, Research
Ainsworth, Rachael (4928302)   +1 more
core   +1 more source

Detection of abundant solid methanol toward young low mass stars [PDF]

open access: yes, 2003
We present detections of the absorption band at $\rm 3.53~\mu m$ due to solid methanol toward three low-mass young stellar objects located in the Serpens and Chameleon molecular cloud complexes.
Dishoeck, E.F.   +16 more
core   +1 more source

Home - About - Disclaimer - Privacy