Results 61 to 70 of about 695,772 (397)
Massive Stars in the Tarantula Nebula: A Rosetta Stone for Extragalactic Supergiant HII Regions
Galaxies, 2019 A review of the properties of the Tarantula Nebula (30 Doradus) in the Large Magellanic Cloud is presented, primarily from the perspective of its massive star content.
Paul A. Crowther
doaj +1 more source
First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies [PDF]
, 2017 The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics.
A. Pillepich +10 more
semanticscholar +1 more source
Anisotropic Galaxy-Galaxy Lensing
, 2000 We investigate the weak lensing shear due to dark matter galaxy halos whose mass distributions, as projected on the sky, are nearly elliptical. The shear pattern due to these halos is anisotropic about the lens centers and we quantify the level of anisotropy by comparing the mean shear experienced by sources located closest to the major axes of the ...
Brainerd, T. G., Wright, C. O.
openaire +2 more sources
The Astronomical Journal, 2012 A growing number of low luminosity and low surface brightness astronomical objects challenge traditional notions of both galaxies and star clusters. To address this, we propose a definition of galaxy independent of the cold dark matter model of the universe: A galaxy is a gravitationally bound set of stars whose properties cannot be explained by a ...
Willman, Beth, Strader, Jay
openaire +2 more sources
Joint galaxy–galaxy lensing and clustering constraints on galaxy formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We compare predictions for galaxy–galaxy lensing profiles and clustering from the Henriques et al. public version of the Munich semi-analytical model (SAM) of galaxy formation and the IllustrisTNG suite, primarily TNG300, with observations from KiDS + GAMA and SDSS-DR7 using four different selection functions for the lenses ...
Malin Renneby +7 more
openaire +4 more sources
, 2005 E+A galaxies are characterized as a galaxy with strong Balmer absorption lines but without any [OII] nor H$\alpha$ emission lines. The existence of strong Balmer absorption lines indicates that E+A galaxies have experienced starburst within recent one ...
Abadi +79 more
core +2 more sources
The role of E+A and post-starburst galaxies – I. Models and model results [PDF]
, 2009 ‘The definitive version is available at www3.interscience.wiley.com '. Copyright Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2009.14416.xDifferent compositions of galaxy types in the field in comparison to galaxy clusters as described by the ...
Falkenberg, M.A. +2 more
core +2 more sources
The Role of Starbursts in the Formation of Galaxies & Active Galactic Nuclei
, 1999 Starbursts are episodes of intense star-formation in the central regions of galaxies, and are the sites of roughly 25% of the high-mass star-formation in the local universe.
Buat V. +5 more
core +1 more source
Arc Statistics in Clusters: Galaxy Contribution [PDF]
, 1999 The frequency with which background galaxies appear as long arcs as a result of gravitational lensing by foreground clusters of galaxies has recently been found to be a very sensitive probe of cosmological models by Bartelmann et al. (1998).
Ariyeh H. Maller +14 more
core +2 more sources
The host galaxies and classification of active galactic nuclei [PDF]
, 2006 We present an analysis of the host properties of 85224 emission-line galaxies selected from the Sloan Digital Sky Survey. We show that Seyferts and LINERs form clearly separated branches on the standard optical diagnostic diagrams.
L. Kewley +5 more
semanticscholar +1 more source