Results 41 to 50 of about 895,436 (365)
STELLAR ABUNDANCES IN THE SOLAR NEIGHBORHOOD: THE HYPATIA CATALOG [PDF]
, 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 +6 more
semanticscholar +1 more source
Differential stellar population models: how to reliably measure [Fe/H] and [alpha/Fe] in galaxies [PDF]
, 2009 We present differential stellar population models, which allow improved determinations of the ages, iron and alpha-element abundances of old stellar populations from spectral fitting.
A. Gallazzi +39 more
core +1 more source
Stellar abundances and presolar grains trace the nucleosynthetic origin of molybdenum and ruthenium [PDF]
, 2014 This work presents a large consistent study of molybdenum (Mo) and ruthenium (Ru) abundances in the Milky Way. These two elements are important nucleosynthetic diagnostics. In our sample of 71 Galactic metal-poor field stars, we detect Ru and/or Mo in 52
C. Hansen, A. Andersen, N. Christlieb
semanticscholar +1 more source
Planetary nebulae abundances and stellar evolution II [PDF]
, 2010 Context: In recent years mid- and far infrared spectra of planetary nebulae have been analysed and lead to more accurate abundances. It may be expected that these better abundances lead to a better understanding of the evolution of these objects.
Asplund +59 more
core +5 more sources
Prospects for Measuring Abundances of >20 Elements with Low-resolution Stellar Spectra [PDF]
, 2017 Understanding the evolution of the Milky Way calls for the precise abundance determination of many elements in many stars. A common perception is that deriving more than a few elemental abundances ([Fe/H], [α/Fe], perhaps [C/H], [N/H]) requires medium-to-
Yuan-Sen 森 Ting 丁源 +3 more
semanticscholar +1 more source
Stellar photospheric abundances as a probe of discs and planets [PDF]
, 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 +1 more source
Stellar Iron Abundances at the Galactic Center [PDF]
, 2000 We present measurements of [Fe/H] for six M supergiant stars and three giant stars within 0.5 pc of the Galactic Center (GC) and one M supergiant star within 30 pc of the GC. The results are based on high-resolution (lambda / Delta lambda =40,000) K-band
Adam Steed +26 more
core +2 more sources
Abundances in Stellar Populations [PDF]
Symposium - International Astronomical Union, 1976 Stellar abundances are reviewed with emphasis on large-scale effects which may yield clues to galactic structure and evolution. Spectroscopic and indirect photoelectric abundance criteria are discussed, and utilized.The abundance statistics of nearby galactic disk stars, dominated by M dwarfs, but observed at spectral types F and GV and K III, suggest ...
openaire +1 more source
Nitrogen Production in Starburst Galaxies Detected by GALEX [PDF]
, 2007 We investigate the production of nitrogen in star-forming galaxies with ultraviolet (UV) radiation detected by the Galaxy Evolution Explorer Satellite (GALEX).
Barlow, Tom A. +24 more
core +5 more sources
TRACING THE EVOLUTION OF HIGH-REDSHIFT GALAXIES USING STELLAR ABUNDANCES [PDF]
, 2013 This paper presents the first results from a model for chemical evolution that can be applied to N-body cosmological simulations and quantitatively compared to measured stellar abundances from large astronomical surveys. This model convolves the chemical
Brian Crosby +3 more
semanticscholar +1 more source