Results 21 to 30 of about 1,811,299 (294)

Light Elements in the Universe

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Due to their production sites, as well as to how they are processed and destroyed in stars, the light elements are excellent tools to investigate a number of crucial issues in modern astrophysics: from stellar structure and non-standard processes at work
Sofia Randich, Laura Magrini
doaj   +1 more source

Synthetic stellar populations: single stellar populations, stellar interior models and primordial protogalaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
We present a new set of stellar interior and synthesis models for predicting the integrated emission from stellar populations in star clusters and galaxies of arbitrary age and metallicity. This work differs from existing spectral synthesis codes in a number of important ways, namely (1) the incorporation of new stellar evolutionary tracks, with ...
Jimenez, Raul   +4 more
openaire   +2 more sources

Constraining planet structure from stellar chemistry : the cases of CoRoT-7, Kepler-10, and Kepler-93 [PDF]

open access: yes, 2015
This work was supported by Fundação para a Ciência e a Tecnologia (FCT) through the research grant UID/FIS/04434/2013. P.F., N.C.S., and S.G.S. also acknowledge support from FCT through Investigador FCT contracts of reference IF/01037/2013, IF/00169/2012,
Mortier, Annelies   +31 more
core   +3 more sources

Looking into dark matter with asteroseismology

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Dark matter remains as an elusive component of modern Cosmology. According to previous research, stellar physics observables can be affected by the presence of hypothetical dark matter particles, which can be produced or accreted into the stars.
Adrián Ayala
doaj   +1 more source

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

Multiple Populations in Star Clusters

open access: yesUniverse, 2022
We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams.
Antonino P. Milone, Anna F. Marino
doaj   +1 more source

Astroserver – Research Services in the Stellar Webshop

open access: yesOpen Astronomy, 2017
A quick look at research and development in astronomy shows that we live in exciting times. Exoplanetary systems, supernovae, and merging binary black holes were far out of reach for observers two decades ago and now such phenomena are recorded routinely.
Németh Péter
doaj   +1 more source

Stellar populations of shell galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
Submitted to MNRAS.
Carlsten, S., Hau, G. K. T., Zenteno, A.
openaire   +2 more sources

Stellar populations in HII galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
We analyse the stellar content of a large number of HII galaxies from the continua and absorption features of their spectra using population synthesis methods, in order to gain information about the star formation histories of these objects. We find that all galaxies of our sample contain an old stellar population (>= 1 Gyr) that dominates the ...
Westera, P.   +3 more
openaire   +3 more sources

STEllAR-GROUP/octotiger: Kokkos kernels

open access: yes, 2021
What's Changed Branch by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/341 Add Zenodo DOI by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/342 Docu by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/347 Add ...
Biddiscombe, John   +21 more
core   +1 more source

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