Results 21 to 30 of about 1,738 (137)

The Formation of Galaxy Disks

open access: yes, 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
openaire   +3 more sources

THE GROWTH OF THE DISK GALAXY UGC8802 [PDF]

open access: yesThe Astrophysical Journal, 2012
6 pages, 2 figures, accepted by ...
Chang, R. X., Shen, S. Y., Hou, J. L.
openaire   +2 more sources

Circumnuclear Keplerian Disks in Galaxies

open access: yesThe 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
openaire   +4 more sources

Tidal Thickening of Galaxy Disks [PDF]

open access: yes, 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
openaire   +2 more sources

Preserving evidence integrity in full file system extractions: Assessing hash inconsistencies and potential solutions

open access: yesJournal of Forensic Sciences, EarlyView.
Abstract Smartphone manufacturers' enhanced privacy and security measures, such as File‐Based Encryption (FBE), have disrupted traditional data extraction techniques, necessitating the adoption of Full File System Extraction (FFS). FFS requires booting a smartphone, decrypting its UserData partition, and accessing files individually, a process that ...
Sanghyun Yoo, Yunji Park, Doowon Jeong
wiley   +1 more source

Supercomputer simulations of disk galaxies

open access: yesAstronomical & 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
openaire   +2 more sources

A catalog of edge-on disk galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2005
16 pages, 10 figures, accepted by A& ...
Kautsch, Stefan   +3 more
openaire   +5 more sources

The Great Cosmic Silence: What Does the Fermi Paradox Tell About the Future of Humanity?

open access: yesGlobal Policy, EarlyView.
ABSTRACT This article examines how institutional time horizons shape the long‐term survival prospects of human technological civilisation. While research on global catastrophic and existential risks has expanded, the temporal structures of political‐economic institutions remain underexamined.
Heikki Patomäki
wiley   +1 more source

On the Significance of the Thick Disks of Disk Galaxies

open access: yesThe Astrophysical Journal Supplement Series
Abstract Thick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from a few percent to 100% of the disk mass, depending on the galaxy and the measurement method.
Sukyoung K. Yi   +10 more
openaire   +5 more sources

THE OPACITY OF SPIRAL GALAXY DISKS [PDF]

open access: yes, 2007
The opacity of foreground spiral disks can be probed from the number of distant galaxies seen through them. To calibrate this number for effects other than the dust extinction, Gonzalez et al. (1998) developed the "Synthetic Field Method". A synthetic field is an extincted Hubble Deep Field added to the science field.
Holwerda, Benne W.   +3 more
openaire   +1 more source

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