Results 11 to 20 of about 250,517 (293)
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
Chemical abundances of the Typhon stellar stream [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy stream Typhon. Typhon stars have apocentres r ≳ 100 kpc, making this the first detailed chemical picture of the Milky Way’s very distant stellar halo.
Alexander P Ji +4 more
openaire +3 more sources
SAGA: Stellar Abundances for Galatic Archeology [PDF]
Proceedings of XII International Symposium on Nuclei in the Cosmos — PoS(NIC XII), 2013 A tutorial for the Stellar Abundances for Galactic Archaeology (SAGA) database is presented. This paper describes the outline of the database, reports the current status of the data compilation and known problems, and presents plans for future updates and extensions.
Suda, Takuma, Takuma Suda
openaire +4 more sources
Stellar abundances and nucleosynthesis [PDF]
, 1974 Stellar abundances are essential parameters for many branches of astronomy. They are also particularly important as tests for theories of nucleosynthesis. Despite the encouraging results from band photometry, detailed spectroscopic analyses are still important in furthering knowledge of physical processes occurring in a variety of stellar objects. This
Ellis, R, Ellis, Richard S.
core +4 more sources
Stellar Abundances in the Solar Neighborhood [PDF]
The Astronomical Journal, 2012 The only elements that were made in significant quantity during the Big Bang were hydrogen and helium, and to a lesser extent lithium. Depending on the initial mass of a star, it may eject some or all of the unique, newly formed elements into the interstellar medium.
Hinkel, Natalie R. +4 more
core +6 more sources
THE RAVE CATALOG OF STELLAR ELEMENTAL ABUNDANCES: FIRST DATA RELEASE [PDF]
The Astronomical Journal, 2011 We present chemical elemental abundances for $36,561$ stars observed by the RAdial Velocity Experiment (RAVE), an ambitious spectroscopic survey of our Galaxy at Galactic latitudes $|$b$|>25^{\circ}$ and with magnitudes in the range 9$
Zwitter, Tomaž +23 more
openaire +7 more sources
Updated opacities from the opacity project [PDF]
, 2005 Using the code autostructure, extensive calculations of inner-shell atomic data have been made for the chemical elements He, C, N, O, Ne, Na, Mg, Al, Si, S, Ar, Ca, Cr, Mn, Fe and Ni.
Bautista, M.A. +7 more
core +4 more sources
LRPayne: Stellar parameters and abundances from low-resolution spectra
Astronomy & AstrophysicsAims. This paper introduces LRPayne, a novel algorithm designed for the efficient determination of stellar parameters and chemical abundances from low-resolution optical spectra, with a primary focus on data from large-scale galactic surveys such as ...
Vernekar Nagaraj +6 more
doaj +2 more sources
The Astrophysical Journal, 2023 Stellar streams in the Galactic halo are useful probes of the assembly of galaxies like the Milky Way. Many tidal stellar streams that have been found in recent years are accompanied by a known progenitor globular cluster or dwarf galaxy.
Keith Hawkins +10 more
doaj +1 more source
The Metallicity and Distance of Leo A from Blue Supergiants
The Astrophysical Journal, 2023 We have obtained high-quality spectra of blue supergiant candidates in the dwarf irregular galaxy Leo A with the Low Resolution Imaging Spectrometer at the Keck I telescope.
Miguel A. Urbaneja +2 more
doaj +1 more source