Results 1 to 10 of about 4,904 (241)

Stellar evolutionary models for Magellanic Clouds [PDF]

open access: yesAstronomy and Astrophysics, 2003
11 pages, 9 eps figures, A&A accepted, evolutionary tracks and isochrones available at http://gipsy.cjb.net at the link ``Pisa Evolutionary Library''
V Castellani   +2 more
exaly   +4 more sources

Dynamical Stellar Masses of Pre-main-sequence Stars in Lupus and Taurus Obtained with ALMA Surveys in Comparison with Stellar Evolutionary Models [PDF]

open access: yesAstrophysical Journal, 2021
Abstract We analyzed archival molecular line data of pre-main-sequence (PMS) stars in the Lupus and Taurus star-forming regions obtained with ALMA surveys with an integration time of a few minutes per source. We stacked the data of 13CO and C18O (J = 2–1 and 3–2) and CN (N = 3–2, J = 7/2–5/2) lines to enhance the signal-to-noise ratios ...
TERESA A M Braun   +2 more
exaly   +5 more sources

Flow-based Generative Emulation of Grids of Stellar Evolutionary Models

open access: yesAstrophysical Journal
Abstract We present a flow-based generative approach to emulate grids of stellar evolutionary models. By interpreting the input parameters and output properties of these models as multidimensional probability distributions, we train conditional normalizing flows to learn and predict the complex relationships between grid inputs and ...
Marc Hon, Yaguang Li, Joel Ong
exaly   +5 more sources

Dynamical Masses and Stellar Evolutionary Model Predictions of M Stars [PDF]

open access: yesThe Astrophysical Journal, 2021
Abstract In this era of Gaia and ALMA, dynamical stellar mass measurements, derived from spatially and spectrally resolved observations of the Keplerian rotation of circumstellar disks, provide benchmarks that are independent of observations of stellar characteristics and their uncertainties. These benchmarks can then be used to validate
Jamila Pegues   +11 more
core   +7 more sources

Probing high-mass stellar evolutionary models with binary stars [PDF]

open access: yesProceedings of the International Astronomical Union, 2014
AbstractMass discrepancy is one of the problems that is pending a solution in (massive) binary star research field. The problem is often solved by introducing an additional near core mixing into evolutionary models, which brings theoretical masses of individual stellar components into an agreement with the dynamical ones.
Tkachenko, A.
openaire   +4 more sources

Evolutionary stellar population synthesis with MILES – II. Scaled-solar and α-enhanced models [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
Published in MNRAS,449,1177 (2015) http://adsabs.harvard.edu/abs/2015MNRAS.449.1177V .
A Vazdekis, P Coelho, S Cassisi
exaly   +5 more sources

Evolutionary stellar population synthesis with MILES - I. The base models and a new line index system [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2010
All model predictions, stellar libraries and web-based tools are available at our new website: http://miles.iac ...
A Vazdekis   +2 more
exaly   +6 more sources

On the Use of Blanketed Atmospheres as Boundary Conditions for Stellar Evolutionary Models [PDF]

open access: yesAstrophysical Journal, 2008
54 pages, including 20 figures and 3 tables; accepted (July 2007) for publication in the Astrophysical ...
Don A Vandenberg   +2 more
exaly   +3 more sources

Applications of the k–ω Model in Stellar Evolutionary Models [PDF]

open access: yesAstrophysical Journal, 2017
Abstract The k–ω model for turbulence was first proposed by Kolmogorov. A new k–ω model for stellar convection was developed by Li, which could reasonably describe turbulent convection not only in the convectively unstable zone, but also in the overshooting regions.
exaly   +3 more sources

Evolutionary sequences of stellar models with new radiative opacities. VI. $Z=0.0001$ [PDF]

open access: yesAstronomy and Astrophysics Supplement Series, 1996
We present a large grid of stellar evolutionary models with the initial chemical composition (Z = 0:0001;Y =0 :23). These tracks are conceived to extend the grid of stellar models described in the previous papers of this series, and are computed with the new radiative opacities by Iglesias et al. (1992) and convective overshoot.
Girardi, L.   +4 more
openaire   +2 more sources

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