Abundance ratios in dwarf elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We determine abundance ratios of 37 dwarf ellipticals (dEs) in the nearby Virgo cluster. This sample is representative of the early-type population of galaxies in the absolute magnitude range -19.0 < Mr < -16.0. We analyze their absorption line-strength indices by means of index-index diagrams and scaling relations and use the stellar population ...
Şen, Ş. +16 more
openaire +9 more sources
Combining clustering and abundances of galaxy clusters to test cosmology and primordial non-Gaussianity [PDF]
, 2013 We present the clustering of galaxy clusters as a useful addition to the common set of cosmological observables. The clustering of clusters probes the large-scale structure of the Universe, extending galaxy clustering analysis to the high-peak, hig h ...
A. Mana +5 more
semanticscholar +1 more source
Simulations of the galaxy population constrained by observations from z=3 to the present day: implications for galactic winds and the fate of their ejecta [PDF]
, 2012 We apply Monte Carlo Markov Chain (MCMC) methods to large-scale simulations of galaxy formation in a LambdaCDM cosmology in order to explore how star formation and feedback are constrained by the observed luminosity and stellar mass functions of galaxies.
Angulo +110 more
core +2 more sources
Modelling element abundances in semi-analytic models of galaxy formation [PDF]
, 2013 We update the treatment of chemical evolution in the Munich semi-analytic model, L-GALAXIES. Our new implementation includes delayed enrichment from stellar winds, supernovae type II (SNe-II) and supernovae type Ia (SNe-Ia), as well as metallicity ...
R. Yates +5 more
semanticscholar +1 more source
Mapping Metallicity Variations across Nearby Galaxy Disks [PDF]
Astrophysical Journal, 2019 The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled.
K. Kreckel +27 more
semanticscholar +1 more source
ELEMENTAL ABUNDANCES AND THEIR IMPLICATIONS FOR THE CHEMICAL ENRICHMENT OF THE BOÖTES I ULTRAFAINT GALAXY [PDF]
, 2012 We present a double-blind analysis of high-dispersion spectra of seven red giant members of the Boötes I ultrafaint dwarf spheroidal galaxy, complemented with re-analysis of a similar spectrum of an eighth-member star. The stars cover [Fe/H] from −3.7 to
G. Gilmore +5 more
semanticscholar +1 more source
Globular cluster formation and evolution in the context of cosmological galaxy assembly: open questions [PDF]
Proceedings of the Royal Society A, 2018 We discuss some of the key open questions regarding the formation and evolution of globular clusters (GCs) during galaxy formation and assembly within a cosmological framework.
D. Forbes +11 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We investigate the mass–metallicity relationship of star-forming galaxies by analyzing the absorption line spectra of ∼200,000 galaxies in the Sloan Digital Sky Survey.
Eva Sextl +3 more
doaj +1 more source
Dust Masses, PAH Abundances, and Starlight Intensities in the SINGS Galaxy Sample [PDF]
, 2007 Physical dust models are presented for 65 galaxies in SINGS that are strongly detected in the four IRAC bands and three MIPS bands. For each galaxy we estimate (1) the total dust mass, (2) the fraction of the dust mass contributed by PAHs, and (3) the ...
B. Draine +21 more
semanticscholar +1 more source
The abundance of dark galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We show that gas in a large fraction of low mass dark matter halos may form Toomre stable disks, if angular momentum is conserved when the gas contracts. Such halos would be stable to star formation and therefore remain dark. This may potentially explain the discrepancy between the predicted and observed number of dwarf satellites in the Local Group ...
Verde, Licia, Oh, S. Peng, Jimenez, Raul
openaire +2 more sources