Results 21 to 30 of about 3,859 (142)
CUMULATIVE OXYGEN ABUNDANCES OF SPIRAL GALAXIES [PDF]
The Astrophysical Journal, 2012 14 pages, 7 figures, 5 ...
Dack, Stuart, McCall, Marshall L.
openaire +2 more sources
Abundance gradients in elliptical galaxies [PDF]
Astronomy & Astrophysics, 2003 Abundance gradients predicted by dissipative models of galaxy formation are studied with the aid of mass models of spherical galaxies obeying the Sersic R 1=n law in projection. The link between metallicity and stellar binding energies and angular momenta is derived from the "concentration model" by Lynden-Bell (1975) with the addition of a terminal ...
L. Angeletti, P. Giannone
openaire +1 more source
Element Abundances In Nearby Galaxies [PDF]
, 2004 In these lectures I present a highly opinionated review of the observed patterns of metallicity and element abundance ratios in nearby spiral, irregular, and dwarf elliptical galaxies, with connection to a number of astrophysical issues associated with chemical evolution.
openaire +2 more sources
Chemical abundances of LINER galaxies – nitrogen abundance estimations
Monthly Notices of the Royal Astronomical SocietyABSTRACT In this work, we investigated the nitrogen and oxygen abundances in a sample of galaxies with Low Ionization Nuclear Emission Regions (LINERs) in their nucleus. Optical spectroscopic data (3600 – 10 000 Å) of 40 LINERs from the Mapping Nearby Galaxies (MaNGAs) survey were considered.
C B Oliveira +7 more
openaire +3 more sources
Abundance ratios in hierarchical galaxy formation [PDF]
Astrophysics and Space Science, 1999 7 pages, 3 figures, accepted by ...
openaire +5 more sources
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
The galaxy clustering crisis in abundance matching [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Abstract Galaxy clustering on small scales is significantly underpredicted by sub-halo abundance matching (SHAM) models that populate (sub-)haloes with galaxies based on peak halo mass, Mpeak. SHAM models based on the peak maximum circular velocity, Vpeak, have had much better success.
Duncan Campbell +7 more
openaire +2 more sources
Astronomy & Astrophysics, 2023 We present constraints on the flat Λ cold dark matter cosmological model through a joint analysis of galaxy abundance, galaxy clustering, and galaxy-galaxy lensing observables with the Kilo-Degree Survey. Our theoretical model combines a flexible conditional stellar mass function, which describes the galaxy-halo connection, with a cosmological N-body ...
Andrej Dvornik +16 more
openaire +7 more sources
Nebular abundances of nearby southern dwarf galaxies [PDF]
Astronomy & Astrophysics, 2003 The results of optical spectroscopy of H II regions in a sample of southern dwarf irregulars consisting of five dwarf galaxies in the Centaurus A group, four dwarfs in the Sculptor group, and eight additional dwarf galaxies are presented. Oxygen abundances are derived using the direct method where [O III]4363 is detected; otherwise, abundances are ...
Lee, Henry, Grebel, Eva K., Hodge, Paul
openaire +2 more sources
CHEMICAL ABUNDANCES IN CLUSTERS OF GALAXIES
, 1995 25 pages of uuencoded compressed PostScript. 4 PostScript figures and 4 PostScript tables available from http://www-astro.physics.ox.ac.uk/~bkg/gibson.html Accepted for publication in Astronomy & Astrophysics.
MATTEUCCI, MARIA FRANCESCA +1 more
openaire +3 more sources