Results 11 to 20 of about 992,258 (306)
Solar and Stellar Photospheric Abundances [PDF]
Living Reviews in Solar Physics, 2016 The determination of photospheric abundances in late-type stars from spectroscopic observations is a well-established field, built on solid theoretical foundations.
Carlos Allende Prieto +1 more
exaly +6 more sources
Determining Stellar Elemental Abundances from DESI Spectra with the Data-driven Payne [PDF]
The Astrophysical Journal Supplement SeriesStellar abundances for a large number of stars provide key information for the study of Galactic formation history. Large spectroscopic surveys such as the Dark Energy Spectroscopic Instrument (DESI) and LAMOST take median-to-low-resolution ( R ≲ 5000 ...
Meng Zhang +10 more
doaj +2 more sources
Accuracy and Precision of Industrial Stellar Abundances [PDF]
Annual Review of Astronomy and Astrophysics, 2018 There has been an incredibly large investment in obtaining high-resolution stellar spectra for determining chemical abundances of stars. This information is crucial to answer fundamental questions in astronomy by constraining the formation and evolution ...
P. Jofre, U. Heiter, C. Soubiran
semanticscholar +5 more sources
High-Precision Stellar Abundances of the Elements: Methods and Applications [PDF]
Astronomy and Astrophysics Review, 2018 Efficient spectrographs at large telescopes have made it possible to obtain high-resolution spectra of stars with high signal-to-noise ratio and advances in model atmosphere analyses have enabled estimates of high-precision differential abundances of the
P. Nissen, B. Gustafsson
exaly +2 more sources
THE SENSITIVITY OF CONVECTION ZONE DEPTH TO STELLAR ABUNDANCES: AN ABSOLUTE STELLAR ABUNDANCE SCALE FROM ASTEROSEISMOLOGY [PDF]
The Astrophysical Journal, 2011 The base of the convection zone (CZ) is a source of acoustic glitches in the asteroseismic frequency spectra of solar-like oscillators, allowing one to precisely measure the acoustic depth to the feature. We examine the sensitivity of the depth of the CZ
J. V. van Saders, M. Pinsonneault
semanticscholar +4 more sources
Stellar abundances of beryllium and CUBES [PDF]
Astrophysics and Space Science, 2014 Stellar abundances of beryllium are useful in different areas of astrophysics, including studies of the Galactic chemical evolution, of stellar evolution, and of the formation of globular clusters.
R. Smiljanic
semanticscholar +4 more sources
STELLAR ABUNDANCES IN THE SOLAR NEIGHBORHOOD: THE HYPATIA CATALOG [PDF]
The Astronomical Journal, 2014 We compile spectroscopic abundance data from 84 literature sources for 50 elements across 3058 stars in the solar neighborhood, within 150 pc of the Sun, to produce the Hypatia Catalog.
N. Hinkel +4 more
semanticscholar +4 more sources
Stellar photospheric abundances as a probe of discs and planets [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Protoplanetary disks, debris disks, and disrupted or evaporating planets can all feed accretion onto stars. The photospheric abundances of such stars may then reveal the composition of the accreted material.
A. Jermyn, M. Kama
semanticscholar +4 more sources
Stellar Abundances in the Solar Neighborhood
, 2012 We compile spectroscopic abundance data from 49 literature sources for 46 elements across 2836 stars in the solar e, within 150 pc of the Sun, to produce the Hypatia Catalog. We analyze the variability of the spread in abundance measurements reported for
N. Hinkel
semanticscholar +3 more sources
The Stellar Abundances and Galactic Evolution Survey (SAGES). I. General Description and the First Data Release (DR1) [PDF]
Astrophysical Journal Supplement Series, 2023 The Stellar Abundances and Galactic Evolution Survey (SAGES) of the northern sky is a specifically designed multiband photometric survey aiming to provide reliable stellar parameters with accuracy comparable to those from low-resolution optical spectra ...
Zhou Fan +37 more
semanticscholar +1 more source