The asteroseismic surface effect from a grid of 3D convection simulations - I. Frequency shifts from convective expansion of stellar atmospheres [PDF]
, 2016 We analyse the effect on adiabatic stellar oscillation frequencies of replacing the near-surface layers in 1D stellar structure models with averaged 3D stellar surface convection simulations.
R. Trampedach +6 more
semanticscholar +1 more source
Inelastic silicon-hydrogen collision data for non-LTE applications in stellar atmospheres [PDF]
, 2014 A. K. Belyaev +2 more
openalex +2 more sources
The Astrophysical Journal, 2023 Previous examinations of fully convective M-dwarf stars have highlighted enhanced rates of nanoflare activity on these distant stellar sources. However, the specific role the convective boundary, which is believed to be present for spectral types earlier
S. D. T. Grant +13 more
doaj +1 more source
Stars in the age of micro-arc-second astrometry [PDF]
, 2007 The understanding and modeling of the structure and evolution of stars is based on statistical physics as well as on hydrodynamics. Today, a precise identification and proper description of the physical processes at work in stellar interiors are still ...
Alecian +17 more
core +2 more sources
Lithium in Stellar Atmospheres: Observations and Theory [PDF]
, 2016 Of all the light elements, lithium is the most sensitive indicator of stellar evolution. This review discusses current data on the abundance of lithium in the atmospheres of A-, F-, G-, and K-stars of different types, as well as the consistency of these ...
L. S. Lyubimkov
semanticscholar +1 more source
2D MODELLING OF THE GAS FLOW STRUCTURE IN THE SYMBIOTIC STAR Z ANDROMEDAE
Odessa Astronomical Publications, 2017 The 2D gasdynamical simulations of gas structure in the symbiotic star Z And have been carried out for different stellar wind regimes. Since the mechanisms of gas acceleration in stellar atmospheres are not well studied, the parametric representation of ...
E. Yu. Kilpio
doaj +1 more source
Improvements to Stellar Structure Models, Based on a Grid of 3D Convection Simulations. I. $T(\tau)$-Relations [PDF]
, 2014 Relations between temperature, T, and optical depth, tau, are often used for describing the photospheric transition from optically thick to optically thin in stellar structure models.
Asplund, Martin +4 more
core +1 more source
The True Nature of the Brightest Local Triple Stellar Candidates within 100 pc in the Galaxy
The Astronomical Journal, 2023 We present a study of a sample of bright ( V ≤ 10 mag) and close ( d ≤ 100 pc) triple–stellar system candidates in the galaxy, consisting of eight systems in total.
Z. T. Yousef +3 more
doaj +1 more source
Spectral Evolution Models for the Next Decade [PDF]
, 2009 Spectral evolution models are a widely used tool for determining the stellar content of galaxies. I provide a review of the latest developments in stellar atmosphere and evolution models, with an emphasis on massive stars.
Claus Leitherer +7 more
core +1 more source
Scaling of the asymptotic entropy jump in the superadiabatic layers of stellar atmospheres [PDF]
, 2016 Stellar structure calculations are able to predict precisely the properties of stars during their evolution. However, convection is still modelled by the mixing length theory; therefore, the upper boundary conditions near the optical surface do not agree
Z. Magic
semanticscholar +1 more source