Results 21 to 30 of about 1,069 (184)
On the scaling relations of disk galaxies [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractThe physical background of scaling laws of disk galaxies is reviewed. The match between analytically derived and observed scaling laws is briefly discussed. Accurate modeling of the fraction of baryons that end up populating a disk, and the conversion efficiency of those into stars, remains a challenging task for numerical simulations.
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, 2008 We present a new set of multi-million particle SPH simulations of the formation of disk dominated galaxies in a cosmological context. Some of these galaxies are higher resolution versions of the models already described in Governato et al (2007). To correctly compare simulations with observations we create artificial images of our simulations and from ...
Governato, F, Mayer, L, Brook, C
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Color dichotomy and gradients in the bulges and disks of EFIGI galaxies along the Hubble sequence
Astronomy & AstrophysicsContext. One of the most outstanding questions in contemporary astrophysics is: What is the significance of galaxy morphology? What physical processes underlie the morphologies we observe and is a galaxy’s internal structure shaping its evolution (nature)
Quilley L. +2 more
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Models of Late-type Disk Galaxies: 1-D Versus 2-D
Open Astronomy, 2014 We investigate the effects of stochasticity on the observed galaxy parameters by comparing our stochastic star formation two-dimensional (2-D) galaxy evolution models with the commonly used one-dimensional (1-D) models with smooth star formation. The 2-D
Mineikis T., Vansevičius V.
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THE GROWTH OF THE DISK GALAXY UGC8802 [PDF]
The Astrophysical Journal, 2012 6 pages, 2 figures, accepted by ...
Chang, R. X., Shen, S. Y., Hou, J. L.
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Circumnuclear Keplerian Disks in Galaxies
The Astrophysical Journal, 1998 In this paper we demonstrate the possibility of inferring the presence of Keplerian gaseous disks using optical ground-based telescopes properly equipped. We have modeled the peculiar bidimensional shape of the emission lines in a sample of five S0-Sa galaxies as due to the motion of a gaseous disk rotating in the combined potential of a central point ...
BERTOLA, FRANCESCO +5 more
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Tidal Thickening of Galaxy Disks [PDF]
, 1997 3 pages, including two PostScript figures, LaTeX (lamuphys.sty). To be published in the proceedings of the "Galaxy Scaling Relations: Origins, Evolution and Applications" Third ESO-VLT Workshop, November 18-20 ...
Reshetnikov, Vladimir, Combes, Francoise
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Supercomputer simulations of disk galaxies
Astronomical & Astrophysical Transactions, 2001 The time evolution of models for an isolated disk of highly flattened galaxies of stars is investigated by direct integration of the Newtonian equations of motion of N=30,000 identical stars over a time span of many galactic rotations. Certain astronomical implications of the simulations to actual disk-shaped (i.e.
Griv, Evgeny +4 more
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A catalog of edge-on disk galaxies [PDF]
Astronomy & Astrophysics, 2005 16 pages, 10 figures, accepted by A& ...
Kautsch, Stefan +3 more
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The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory
Astronomische Nachrichten, EarlyView.ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth +20 more
wiley +1 more source