Results 41 to 50 of about 2,825,202 (304)

Formation and Evolution of Disk Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1999
We have developed a semianalitical approach to study galaxy formation and evolution in the cosmological context. Disk galaxies (dark matter halo+luminous disk) are considered to be formed through an extended process of gravitational collapse, whose character is determined by the statistical properties of the density fluctuation field assumed here to be
C. Firmani, Vladimir Avila-Reese
openaire   +2 more sources

Numerical simulations of the chemical evolution of complex gravitating disk and dwarf galaxies system

open access: yesВісник Астрономічної школи, 2004
In this work we have simulated the evolution of disk and dwarf galaxies gravitating system, using our viscosity algorithm. We investigated changes in disk galaxy chemical abundance due to minor merger of dwarf galaxy with lower abundance of heavy ...
T. A. Shumakova, P. P. Berczik
doaj   +1 more source

Stochastic 2-D Models of Galaxy Disk Evolution. The Galaxy M33

open access: yesOpen Astronomy, 2014
We have developed a fast numerical 2-D model of galaxy disk evolution (resolved along the galaxy radius and azimuth) by adopting a scheme of parameterized stochastic self-propagating star formation.
Mineikis T., Vansevičius V.
doaj   +1 more source

Galaxy Formation and Chemical Evolution

open access: yesInternational Journal of Astronomy and Astrophysics, 2014
14 pages, 5 ...
openaire   +4 more sources

The Physics of Galaxy Formation and Evolution

open access: yes, 2016
The theoretical studies about galaxy formation and evolution are the subject of this Chapter. They started with the recognition that the Hubble sequence is not a simple morphological description of galaxies, but a possible scheme separating and characterizing the physical processes that bring galaxies to their present form.
D'ONOFRIO, MAURO   +13 more
openaire   +2 more sources

Low-Mass Cluster Galaxies: A Cornerstone of Galaxy Evolution [PDF]

open access: yesAstrophys.Space Sci. 284 (2003) 631-634, 2002
Low-mass cluster galaxies are the most common galaxy type in the universe and are at a cornerstone of our understanding of galaxy formation, cluster luminosity functions, dark matter and the formation of large scale structure. I describe in this summary recent observational results concerning the properties and likely origins of low-mass galaxies in ...
arxiv   +1 more source

Addressing persistent challenges in digital image analysis of cancer tissue: resources developed from a hackathon

open access: yesMolecular Oncology, EarlyView.
Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran   +16 more
wiley   +1 more source

Galaxy formation and evolution: low-surface-brightness galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1998
We investigate in detail the hypothesis that low surface brightness galaxies (LSB) differ from ordinary galaxies simply because they form in halos with large spin parameters. We compute star formation rates using the Schmidt law, assuming the same gas infall dependence on surface density as used in models of the Milky Way.
Raul Jimenez   +3 more
openaire   +3 more sources

Simultaneous inhibition of TRIM24 and TRIM28 sensitises prostate cancer cells to antiandrogen therapy, decreasing VEGF signalling and angiogenesis

open access: yesMolecular Oncology, EarlyView.
TRIM24 and TRIM28 are androgen receptor (AR) coregulators which exhibit increased expression with cancer progression. Both TRIM24 and TRIM28 combine to influence the response of castrate‐resistant prostate cancer (CRPC) cells to AR inhibitors by mediating AR signalling, regulation of MYC and upregulating VEGF to promote angiogenesis. Castrate‐resistant
Damien A. Leach   +8 more
wiley   +1 more source

Merger Induced Globular Cluster Formation and Galaxy Evolution [PDF]

open access: yes, 2008
Based on the earlier work of Gunn and McCrea we model the formation of globular clusters in merging galaxies. Neutral hydrogen observations of dwarf irregular galaxies as well as more luminous systems are used to provide the key parameters of the model ...
Hartwick, F. D. A.
core   +1 more source

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