Results 121 to 130 of about 172,368 (310)

Star Formation and Magnetic Field Amplification due to Galactic Spirals

The Astrophysical Journal
We use global MHD galaxy simulations to investigate the effects of spiral arms on the evolution of magnetic fields and star formation within a self-regulated interstellar medium.
Hector Robinson, James Wadsley, J. A. Sellwood, Ralph E. Pudritz   +3 more
doaj   +1 more source

The Formation and Evolution of Field Massive Galaxies [PDF]

Astrophysics and Space Science, 2003
The problem of the formation and evolution of field massive galaxies is briefly reviewed from an observational perspective. The motivations and the characteristics of the K20 survey are outlined. The redshift distribution of Ks<20 galaxies, the evolution of the rest-frame Ks-band luminosity function and luminosity density to z=1.5, the nature and ...
openaire   +2 more sources

Observational Searches for Galaxies at z > 6

, 2016
Although the universe at redshifts greater than six represents only the first one billion years ( 6, with spectroscopically confirmed galaxies out to nearly z = 9.
Finkelstein, Steven L.
core   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Quantifying Bursty Star Formation in Dwarf Galaxies

The Open Journal of Astrophysics
Dwarf galaxy star formation histories are theoretically expected to be bursty, potentially leaving distinct imprints on their chemical evolution. We propose that episodic starbursts with quiescent periods longer than ~100 Myr should lead to discontinuous
Yuan-Sen Ting, Alexander Ji
doaj   +1 more source

Elliptical Galaxies and Bulges of Disk Galaxies: Summary of Progress and Outstanding Issues

, 2015
This is the summary chapter of a review book on galaxy bulges. Bulge properties and formation histories are more varied than those of ellipticals. I emphasize two advances: 1 - "Classical bulges" are observationally indistinguishable from ellipticals ...
A. C. Fabian, A. C. Fabian, A. Cattaneo, A. Cattaneo, A. Cattaneo, A. Dekel, A. Dekel, A. Dekel, A. Dekel, A. Dressler, A. E. Reines, A. Escala, A. Escala, A. Escala, A. F. L. Bluck, A. F. L. Bluck, A. Gould, A. J. Barth, A. J. Barth, A. J. Romanowsky, A. Karim, A. Marconi, A. Rest, A. Sandage, A. Schulze, A. Toomre, A. Toomre, A. V. Filippenko, A. V. Filippenko, A. V. Kravtsov, A. W. Graham, A. W. Graham, B. G. Elmegreen, B. G. Elmegreen, B. G. Elmegreen, B. R. McNamara, B. Tremblay, C. E. Thornton, C. J. Conselice, C. J. Conselice, C. Knobel, C. M. Booth, C. Y. Peng, D. A. Gadotti, D. A. Gadotti, D. B. Fisher, D. B. Fisher, D. B. Sanders, D. B. Sanders, D. C. Shih, D. Ceverino, D. Ceverino, D. Elbaz, D. Kereš, D. M. Elmegreen, D. Merritt, D. Merritt, D. Schiminovich, D. Thomas, D. Thomas, D. Thomas, Debra Meloy Elmegreen, E. Athanassoula, E. Daddi, E. Emsellem, E. Emsellem, E. Floc’h Le, E. Komatsu, E. Laurikainen, E. Laurikainen, E. M. Kirby, E. O’Sullivan, E. Sani, F. Bournaud, F. Combes, F. Governato, F. Salmi, G. D. Bothun, G. D. Quinlan, G. Gavazzi, G. Gavazzi, G. Hinshaw, G. Rodighiero, G. Vaucouleurs de, H. Kuntschner, I. Karachentsev, J. A. Sellwood, J. C. Forbes, J. C. Mihos, J. Cuadra, J. E. Greene, J. E. Greene, J. E. Greene, J. E. Hibbard, J. E. Hibbard, J. E. Hibbard, J. E. Hibbard, J. Falcón-Barroso, J. Hu, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. Kormendy, J. L. Sérsic, J. M. Gabor, J. M. Wrobel, J. Makino, J. P. Ostriker, J. S. Speagle, J. Woo, J.-L. Nieto, K. Chiboucas, K. E. Whitaker, K. Finlator, K. G. Noeske, K. Gebhardt, K. Gebhardt, K. Hayasaki, K. Jahnke, L. A. M. Tasca, L. C. Ho, L. C. Ho, L. Ferrarese, L. Ferrarese, L. J. Tacconi, L. J. Tacconi, L. Makarova, L. Mayer, M. Baes, M. Boylan-Kolchin, M. C. Begelman, M. Cacciato, M. Cappellari, M. Cappellari, M. Cappellari, M. Cappellari, M. Dotti, M. Hilz, M. Hirschmann, M. J. Irwin, M. J. Rees, M. J. Williams, M. Mateo, M. Milosavljević, M. Milosavljević, M. Puech, M. R. Blanton, N. J. McConnell, N. M. Förster Schreiber, N. M. Förster Schreiber, N. M. Förster Schreiber, N. M. Förster Schreiber, P. B. Ivanov, P. F. Hopkins, P. F. Hopkins, P. J. Armitage, P. J. Armitage, P. Lang, P. N. Best, P. N. Best, P. N. Best, P. S. Behroozi, P. Schechter, Planck Collaboration, R. A. Pildis, R. Bender, R. Bender, R. Bender, R. D. Joseph, R. Genzel, R. Genzel, R. Genzel, R. Genzel, R. Genzel, R. J. McLure, R. L. Davies, R. S. Somerville, S. Bergh van den, S. C. Ellis, S. Courteau, S. D. M. White, S. Genel, S. J. Lilly, S. Khochfar, S. M. Faber, S. M. Faber, S. M. Faber, S. M. Fall, S. P. Rusli, S. Pellegrini, S. Pellegrini, S. Ravindranath, S. Tremaine, S. W. Allen, S. Wuyts, S. Wuyts, T. Ebisuzaki, T. M. Heckman, T. Naab, T. R. Lauer, T. R. Lauer, T. R. Lauer, T. R. Lauer, T. R. Lauer, T. S. Albada van, W. E. Baggett, X. Dai, X.-B. Dong, Y. Birnboim, Y.-J. Peng, Y.-J. Peng   +222 more
core   +1 more source

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, EarlyView.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

An Integrated Picture of Star Formation, Metallicity Evolution, and Galactic Stellar Mass Assembly

, 2008
We present an integrated study of star formation and galactic stellar mass assembly from z=0.05-1.5 and galactic metallicity evolution from z=0.05-0.9 using a very large and highly spectroscopically complete sample selected by rest-frame NIR bolometric ...
A. J. Barger, Barbaro G, L. L. Cowie, Madau P., Pagel B. E. J.   +4 more
core   +1 more source

Saving Bambi from the mower? Using a drone with thermal camera to evaluate a low‐tech scaring technique to reduce roe deer fawn mortality during grass harvest

Wildlife Biology, EarlyView.
Roe deer is a species that hides their neonates as an anti‐predator strategy. This may prove efficient against mammalian predators, such as the red fox; however, it might be an ecological trap as large numbers of fawns are killed by tractors with harvesters each year during grass harvest.
Thomas Vogler, Neri H Thorsen, Simen Pedersen   +2 more
wiley   +1 more source