Results 61 to 70 of about 3,339,915 (332)

The stellar take on lithium

open access: yes, 2013
This is a non-exhaustive review of what we have learned from 10+ years of cluster studies with multi-object spectrographs at 10 m-class telescopes about what stars do with their birth-cloud lithium.
A.J. Korn, Korn, Andreas,
core   +1 more source

The γ Dor stars as revealed by Kepler: A key to reveal deep-layer rotation in A and F stars

open access: yesEPJ Web of Conferences, 2017
The γ Dor pulsating stars present high-order gravity modes, which make them important targets in the intermediate-and low-mass main-sequence region of the Hertzsprung-Russell diagram. Whilst we have only access to rotation in the envelope of the Sun, the
Salmon S. J. A. J.   +4 more
doaj   +1 more source

parsec: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code [PDF]

open access: yes, 2012
We present the updated version of the code used to compute stellar evolutionary tracks in Padova. It is the result of a thorough revision of the major in put physics, together with the inclusion of the pre‐main sequence phase, not present in our previous
A. Bressan   +6 more
semanticscholar   +1 more source

Stellar Flare Statistics - Physical Consequences [PDF]

open access: yesInternational Astronomical Union Colloquium, 1989
AbstractThe observational data permit us to establish clear statistical correlations between different parameters of stellar flare activity and the characteristics of quiet stars. These relations are: (i)between energies and frequencies of flares on stars of different luminosities;(ii)between total radiation energies of flares and quiet stars both in X-
openaire   +1 more source

Turbulence-supported Massive Star Envelopes

open access: yesThe Astrophysical Journal Letters, 2023
The outer envelopes of massive ( M ≳ 10 M _⊙ ) stars exhibit large increases in opacities from forests of lines and ionization transitions (particularly from iron and helium) that trigger near-surface convection zones. One-dimensional (1D) models predict
William C. Schultz   +2 more
doaj   +1 more source

Nucleosynthesis in Massive Stars with Improved Nuclear and Stellar Physics [PDF]

open access: yes, 2001
We present the first calculations to follow the evolution of all stable nuclei and their radioactive progenitors in stellar models computed from the onset of central hydrogen burning through explosion as Type II supernovae. Calculations are performed for
T. Rauscher   +3 more
semanticscholar   +1 more source

TOI-1333Ab is on a well-aligned orbit

open access: yesAstronomy & Astrophysics
Context. Spin-orbit obliquity measurements of hot-Jupiter systems constrain giant planet migration and tidal evolution. In binary systems, combining stellar obliquities with the orbit-orbit angle (γ) between the planetary and stellar companion orbits ...
Knudstrup E.   +4 more
doaj   +1 more source

GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-spin Black Hole Coalescences [PDF]

open access: yesAstrophysical Journal Letters
We report the observation of gravitational waves from two binary black hole coalescences during the fourth observing run of the LIGO–Virgo–KAGRA detector network, GW241011 and GW241110.
A. Abac   +499 more
semanticscholar   +1 more source

First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies [PDF]

open access: yes, 2017
The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics.
A. Pillepich   +10 more
semanticscholar   +1 more source

Physics of Rotation in Stellar Models [PDF]

open access: yes, 2009
32 pages, 7 figures, lectures, CNRS school, will be published by ...
openaire   +2 more sources

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