Results 1 to 10 of about 948,048 (332)
COMPLETE ELEMENT ABUNDANCES OF NINE STARS IN THE r-PROCESS GALAXY RETICULUM II* [PDF]
, 2016 We present chemical abundances derived from high-resolution Magellan/Magellan Inamori Kyocera Echelle spectra of the nine brightest known red giant members of the ultra-faint dwarf galaxy Reticulum II (Ret II). These stars span the full metallicity range
Alexander P. Ji +7 more
semanticscholar +7 more sources
Intermediate-Element Abundances in Galaxy Clusters [PDF]
The Astrophysical Journal, 2002 We present the average abundances of the intermediate elements obtained by performing a stacked analysis of all the galaxy clusters in the archive of the X-ray telescope ASCA.
W. Baumgartner +6 more
semanticscholar +5 more sources
The oxygen abundance deficiency in irregular galaxies [PDF]
New Astronomy Reviews, 2000 The observed oxygen abundances in a number of irregular galaxies have been compared with predictions of the closed-box model of chemical and photometric evolution of galaxies. Oxygen is found to be deficient with respect to the predicted abundances. This
Ferrini, F., Pilyugin, L. S.
core +4 more sources
APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy [PDF]
, 2017 The Apache Point Observatory Galactic Evolution Experiment provides the opportunity of measuring elemental abundances for C, N, O, Na, Mg, Al, Si, P, K, Ca, V, Cr, Mn, Fe, Co, and Ni in vast numbers of stars.
S. Hasselquist +28 more
semanticscholar +3 more sources
Chemical behavior of the dwarf irregular galaxy NGC6822. Its PN and HII region abundances [PDF]
, 2009 Aims. We aim to derive the chemical behavior of a significant sample of PNe and HII regions in the irregular galaxy NGC 6822. The selected objects are distributed in different zones of the galaxy.
L. Hernández-Martínez +3 more
semanticscholar +3 more sources
Dust Formation in a Galaxy with Primitive Abundances [PDF]
Science, 2009 Interstellar dust plays a crucial role in the evolution of galaxies. It governs the chemistry and physics of the interstellar medium. In the local universe, dust forms primarily in the ejecta from stars, but its composition and origin in galaxies at very early times remain controversial.
G. Sloan +8 more
semanticscholar +5 more sources
Extending Ultra-Diffuse Galaxy Abundances to Milky Way Analogs [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We extend the Ultra-Diffuse Galaxy (UDG) abundance relation, NUDG − M200, to lower halo mass hosts (M200 ∼ 1011.6 − 12.2M⊙). We select UDG satellites from published catalogs of dwarf satellite galaxies around Milky Way analogs, namely the Exploration ...
A. Karunakaran, D. Zaritsky
semanticscholar +1 more source
Chemical abundances in active galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The Sloan Digital Sky Survey (SDSS) has proved to be a powerful resource for understanding the physical properties and chemical composition of star-forming galaxies in the local Universe. The SDSS population of active galactic nuclei (AGNs) remains as of yet less explored in this capacity.
Flury, Sophia R., Moran, Edward C.
openaire +2 more sources
Abundance of field galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 15 pages, 13 figures.
Klypin, Anatoly +3 more
openaire +2 more sources
VLT/FLAMES high-resolution chemical abundances in Sculptor: a textbook dwarf spheroidal galaxy [PDF]
Astronomy & Astrophysics, 2018 We present detailed chemical abundances for 99 red-giant branch stars in the centre of the Sculptor dwarf spheroidal galaxy, which have been obtained from high-resolution VLT/FLAMES spectroscopy.
V. Hill +14 more
semanticscholar +1 more source