Results 11 to 20 of about 4,904 (241)

ON THE RELIABILITY OF STELLAR AGES AND AGE SPREADS INFERRED FROM PRE-MAIN-SEQUENCE EVOLUTIONARY MODELS [PDF]

open access: yesAstrophysical Journal, 2011
13 pages, 10 figures, accepted for publication in ...
Takashi Hosokawa   +2 more
exaly   +4 more sources

Chemical element transport in stellar evolution models [PDF]

open access: yesRoyal Society Open Science, 2017
Stellar evolution computations provide the foundation of several methods applied to study the evolutionary properties of stars and stellar populations, both Galactic and extragalactic.
M Salaris, S Cassisi
exaly   +2 more sources

Stellar evolutionary models from the zero-age main sequence to the first thermal pulse

open access: yesAstrophysical Journal, Supplement Series, 1991
Detailed numerical tabulations of 32 stellar evolutionary sequences extending from either the zero-age main sequence (ZAMS) or the zero-age horizontal branch (ZAHB), and through to the occurrence of thermal pulses on the asymptotic giant branch, are presented. The models span a range of 1-3 M ○. (except for one 4 M ○. and one 5 M ○. model) and cover
John C Lattanzio
exaly   +2 more sources

Evolutionary sequences of stellar models with semiconvection and convective overshoot. I. Z=0.008.

open access: yes, 1993
We present two grids of evolutionary stellar models covering the phases of core H- and He-burning for stars having masses in the range 0.6M. to 100M. with composition (Y = 0.25 and Z = 0.008). The computations were performed for two different mixing schemes in the convective regions, i.e.
Alongi, M.   +6 more
openaire   +2 more sources

HR-pypopstar : high-wavelength-resolution stellar populations evolutionary synthesis model [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We present the HR-pyPopStar model, which provides a complete set (in ages) of high-resolution (HR) spectral energy distributions of Single Stellar Populations. The model uses the most recent high-wavelength-resolution theoretical atmosphere libraries for main-sequence, post-AGB/planetary nebulae and Wolf–Rayet stars.
I Millán-Irigoyen   +5 more
openaire   +2 more sources

From theoretical stellar spectra to realistic models of the Milky Way : a never ending Odyssey [PDF]

open access: yes, 2007
The last chapter is dedicated to the compilation of the results and the discussion about the success of - but also about the problems that have arisen during - and in part also survived - this work. The main goal of this thesis was, firstly, to convert
Ammon, Karin
core   +1 more source

Stellar models grids White Dwarfs, 0.2 to 8.0 Msun [Dataset]

open access: yes, 2023
One of the most reliable means of studying the stellar interior is through the apsidal motion in double line eclipsing binary systems since these systems present errors in masses, radii, and effective temperatures of only a few per cent.
Claret, A.
core   +1 more source

Eclipsing binary stars as tests of stellar evolutionary models and stellar ages

open access: yesProceedings of the International Astronomical Union, 2008
AbstractEclipsing binary stars provide highly accurate measurements of the fundamental physical properties of stars. They therefore serve as stringent tests of the predictions of evolutionary models upon which most stellar age determinations are based.
Stassun, Keivan G.   +3 more
openaire   +2 more sources

Evolutionary sequences of stellar models with very high metallicity. V. Z=0.1

open access: yes, 1994
We present detailed tabulations of a large grid of stellar models with initial chemical compositions [Y = 0.475, Z = 0.1] computed with the radiative opacities by Huebner et al. (1977) and convective overshoot. This choice of the opacity is due to the high metallicity in use, because the Livermore Library of radiative opacities (Iglesias et al.
Fagotto, F.   +3 more
openaire   +2 more sources

Early assembly of the most massive galaxies [PDF]

open access: yes, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins   +53 more
core   +1 more source

Home - About - Disclaimer - Privacy