Intermediate mass stars: updated models [PDF]
, 1999 A new set of stellar models in the mass range 1.2 to 9 $M_{\odot}$ is presented. The adopted chemical compositions cover the typical galactic values, namely $0.0001 \le Z \le 0.02$ and $0.23 \le Y \le 0.28$.
Alessandro Chieffi +37 more
core +2 more sources
Mixing and Magnetic Fields in Asymptotic Giant Branch Stars in the Framework of FRUITY Models
Universe, 2021 In the last few years, the modeling of asymptotic giant branch (AGB) stars has been much investigated, both focusing on nucleosynthesis and stellar evolution aspects. Recent advances in the input physics required for stellar computations made it possible
Diego Vescovi
doaj +1 more source
YONSEI EVOLUTIONARY POPULATION SYNTHESIS (YEPS) MODEL. I. SPECTROSCOPIC EVOLUTION OF SIMPLE STELLAR POPULATIONS [PDF]
The Astrophysical Journal Supplement Series, 2012 We present a series of papers on the year-2012 version of Yonsei Evolutionary Population Synthesis (YEPS) model which is constructed on over 20 years of heritage. This first paper delineates the spectroscopic aspect of integrated light from stellar populations older than 1 Gyr.
Chung, Chul +3 more
openaire +2 more sources
Magnetic Inflation and Stellar Mass. IV. Four Low-mass Kepler Eclipsing Binaries Consistent with Non-magnetic Stellar Evolutionary Models [PDF]
The Astronomical Journal, 2019 Abstract Low-mass eclipsing binaries (EBs) show systematically larger radii than model predictions for their mass, metallicity, and age. Prominent explanations for the inflation involve enhanced magnetic fields generated by rapid rotation of the star that inhibit convection and/or suppress flux from the star via starspots.
Eunkyu Han +2 more
openaire +3 more sources
Linking Circumstellar Disk Lifetimes to the Rotational Evolution of Low-mass Stars
The Astrophysical Journal, 2023 The high-energy radiation emitted by young stars can have a strong influence on their rotational evolution at later stages. This is because internal photoevaporation is one of the major drivers of the dispersal of circumstellar disks, which surround all ...
K. Monsch +4 more
doaj +1 more source
Comparison of Theoretical Starburst Photoionisation Models for Optical Diagnostics [PDF]
, 2019 We study and compare different examples of stellar evolutionary synthesis input parameters used to produce photoionisation model grids using the MAPPINGS V modelling code.
Byler, Nell +7 more
core +2 more sources
Frontiers in Astronomy and Space Sciences, 2021 Theoretical prediction of surface stellar abundances of light elements–lithium, beryllium, and boron–represents one of the most interesting open problems in astrophysics.
E. Tognelli +14 more
doaj +1 more source
Young Populous Clusters in the Magellanic Clouds – Implications for Stellar Evolutionary Models [PDF]
Symposium - International Astronomical Union, 1999 We present new UV, visual and Hα photometry obtained with the WFPC2 of NGC 330, NGC 1818, NGC 2004 and NGC 2100, four young populous clusters in the MCs. We present observational evidence for a degree of convective core overshoot in excess of that currently applied in standard models.
Stefan C. Keller +2 more
openaire +1 more source
A Smaller Radius for the Transiting Exoplanet WASP-10b [PDF]
, 2008 We present photometry of WASP-10 during the transit of its short-period Jovian planet. We employed the novel PSF-shaping capabilities the OPTIC camera mounted on the UH 2.2m telescope to achieve a photometric precision of 4.7e-4 per 1.3 min sample.
Alonso +23 more
core +3 more sources
Comparisons for Esta-Task3: Cles and Cesam [PDF]
, 2006 We present the results of comparing three different implementations of the microscopic diffusion process in the stellar evolution codes CESAM and CLES. For each of these implementations we computed models of 1.0, 1.2 and 1.3 M$_{\odot}$.
Lebreton, Y. +4 more
core +4 more sources