Results 21 to 30 of about 271,788 (231)
, 2014 Galaxy masses play a fundamental role in our understanding of structure formation models. This review addresses the variety and reliability of mass estimators that pertain to stars, gas, and dark matter.
Courteau, Stephane +10 more
core +1 more source
Modeling abundances in galaxies [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractWe reviewed chemical evolution of galaxies using our cosmological simulations.
Chiaki Kobayashi, Philip Taylor
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Does Mother Provide? Re‐Examination of Maternal and Embryonic Microbiomes of Diploptera punctata [PDF]
Ecol EvolThis figure summarizes the compositional differences in the non‐blattabacterial microbiomes of embryonic and adult females of the viviparous, Diploptera punctata. This shows the non‐negligible presence and possibly maternal sources of these bacterial taxa in developing embryos.
Jonas B, Arrowsmith V, Ayayee P.
europepmc +2 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
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Abundance of Substructure in Clusters of Galaxies
The Astrophysical Journal, 2004 It is widely recognized that cold dark matter models predict abundant dark matter substructure in halos of all sizes. Galaxy-galaxy lensing provides a unique opportunity to directly measure the presence and the mass of such substructures in clusters of galaxies.
Natarajan, P., Springel, V.
openaire +3 more sources
ON THE SURVIVAL AND ABUNDANCE OF DISK-DOMINATED GALAXIES [PDF]
The Astrophysical Journal, 2009 We study the formation of disk-dominated galaxies in a Lambda CDM universe. Their existence is considered to be a challenge for the Lambda CDM cosmology, because galaxy mergers isotropize stellar disks and trigger angular momentum transport in gas disks, thus fostering the formation of central stellar spheroids. Here, we postulate that the formation of
Koda, Jun +2 more
openaire +4 more sources
On the oxygen abundance deficiency in irregular galaxies [PDF]
New Astronomy Reviews, 2000 8 pages, 7 figures, accepted for publication in Astronomy and ...
Pilyugin, L. S., Ferrini, F.
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Intermediate‐Element Abundances in Galaxy Clusters [PDF]
The Astrophysical Journal, 2005 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. We determine the abundances of Fe, Si, S, and Ni as a function of cluster temperature (mass) from 1--10 keV, and place strong upper limits on the abundances of Ca and Ar.
Mushotzky, R. +7 more
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Chemical abundances and ionizing clusters of H II regions in the LINER galaxy NGC 4258 [PDF]
, 2000 This is an electronic version of an article published in Monthly Notices of the Royal Astronomical Society. Díaz, A.I., Castellanos, M., Terlevich, E. and M.L. García-Vargas.
García-Vargas, María Luisa +3 more
core +1 more source
Stellar Abundances in Local Group Galaxies [PDF]
Highlights of Astronomy, 2005 AbstractHere we describe some of our latest results from measuring detailed abundances in Local Group dwarf galaxies with the VLT. Combining spectroscopic abundances with Color-Magnitude diagrams allows the effective measurement of detailed chemical evolution with time in these galaxies.
Tolstoy, Eline, Venn, Kim
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