Results 191 to 200 of about 1,058 (213)

Automated stellar abundance analysis

Proceedings of the International Astronomical Union, 2013
AbstractThe advent of Milky Way high-resolution spectroscopic surveys has brought our attention to the importance of precise chemical abundance measurements to disentangle the stellar population puzzle of the Galaxy. Moreover, automated stellar parameters are the bedrock of Galactic spectroscopic surveys science.
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Element Abundances in Stellar Coronae

1996
About two years ago, the intrigue of the solar “FIP Effect”—that coronal abundances of elements with a low FIP (≲ 10 eV; e.g Fe, Mg, Si, Ca) are observed to be enhanced relative to those of high FIP elements (≳ 10 eV; e.g. O, Ne, S; see e.g. the review by Meyer 1993)—prompted us to study stellar coronal abundances based on new EUV spectra obtained with
J. J. Drake, J. M. Laming, K. G. Widing
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Abundance measurements in stellar environments

AIP Conference Proceedings, 2014
Most of what we know about stars, and systems of stars, is derived from the analysis of their electromagnetic radiation. This lesson is an attempt to describe to Physicists, without any Astrophysical background, the framework to understand the present status of abundance determination in stellar environments and its limit.
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From Stellar Spectra to Abundances

Astrophysics and Space Science, 2001
The current techniques of stellar abundances determination from high resolution spectra are discussed, and the related uncertainties arising from the analysis are examined. These involve the observational uncertainties but also physical data, and atmosphere models accuracy. This critical assessment is then used to shed light on the controversial [O/Fe]
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Stellar nucleosynthesis and galactic abundances

AIP Conference Proceedings, 2001
Galactic abundances are neither constant in time nor do they evolve in a simple fashion, e.g., by an enrichment of heavy elements in constant relative proportions. Instead, their evolution in space and time reflects the history of star formation and the lifetimes of the diverse contributing stellar objects.
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sMILES SSPs: a library of semi-empirical MILES stellar population models with variable [α/Fe] abundances

Monthly Notices of the Royal Astronomical Society, 2023
Adam T Knowles, A E Sansom, A Vazdekis
exaly  

The Gaia-ESO Survey: Homogenisation of stellar parameters and elemental abundances

Astronomy and Astrophysics, 2023
A Hourihane, P François, L Magrini
exaly  

Stellar abundance

Nature, 1995
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Reliable stellar abundances of individual stars with the MUSE integral-field spectrograph

Monthly Notices of the Royal Astronomical Society, 2022
Michael R Hayden, Sanjib Sharma, Joss Bland-Hawthorn   +2 more
exaly  

Automated derivation of stellar atmospheric parameters and chemical abundances: the MATISSE algorithm

Monthly Notices of the Royal Astronomical Society, 2006
A Recio-Blanco, A Bijaoui, P De Laverny   +2 more
exaly