Results 81 to 90 of about 54,114 (300)

Simulating Subhalos at High Redshift: Merger Rates, Counts, and Types

, 2008
Galaxies are believed to be in one-to-one correspondence with simulated dark matter subhalos. We use high-resolution N-body simulations of cosmological volumes to calculate the statistical properties of subhalo (galaxy) major mergers at high redshift (z ...
Allgood, Andrew R. Wetzel, Barnes, Bell, Benson, Berlind, Berrier, Binney, Blain, Blumenthal, Bower, Boylan-Kolchin, Boylan-Kolchin, Carlberg, Cohn, Cohn, Cohn, Conroy, Conroy, Cooper, Cooray, Coppin, Cox, Davis, De Lucia, Dekel, Diemand, Diemand, Dubinski, Evrard, Fakhouri, Faltenbacher, Gao, Gao, Gawiser, Genel, Gerke, Ghigna, Ghigna, Giavalisco, Giocoli, Gnedin, Gottlöber, Guo, Harker, Hopkins, Hopkins, Hopkins, J. D. Cohn, Jiang, Kampczyk, Kartaltepe, Kauffmann, Kitzbichler, Klypin, Komatsu, Kravtsov, Lacey, Lacey, Li, Lin, Lotz, Lotz, Madau, Maller, Martin White, Maulbetsch, McIntosh, Mo, Moore, Murali, Naab, Navarro, Neto, Noguchi, Ouchi, Patton, Peacock, Percival, Reed, Robertson, Sanders, Saro, Seljak, Sheth, Smoot, Somerville, Springel, Springel, Springel, Steidel, Stewart, Tacconi, Taylor, Tegmark, Thacker, Toomre, Tormen, Tormen, Vale, van den Bosch, Wang, Wang, Wetzel, Wetzel, White, White, White, Yamauchi, Yang, Yoshida, Zentner, Zhang   +112 more
core   +3 more sources

Numerical simulations of dwarf galaxy merger trees [PDF]

, 2014
We investigate the evolution of dwarf galaxies using N -body/SPH simulations that incorporate their formation histories through merger trees constructed using the ex- tended Press-Schechter formalism.
Cloet-Osselaer, Annelies, De Rijcke, Sven, Koleva, Mina, Schroyen, Joeri, Vandenbroucke, Bert, Verbeke, Robbert   +5 more
core   +3 more sources

Measuring the Cosmic Web

Open Astronomy, 2011
A quantitative study of the clustering properties of the cosmic web as a function of absolute magnitude and color is presented using the SDSS Data Release 7 galaxy survey. Mark correlations are included in the analysis.
Müller Volker, Hoffmann Kai, Nuza Sebastián E.   +2 more
doaj   +1 more source

The Millennium Galaxy Catalogue: The connection between close pairs and asymmetry; implications for the galaxy merger rate

, 2007
We compare the use of galaxy asymmetry and pair proximity for measuring galaxy merger fractions and rates for a volume limited sample of 3184 galaxies with -21 < M(B) -5 log h < -18 mag.
Alister W. Graham, Christopher J. Conselice, Conselice C. J., David R. Patton, Jochen Liske, Paul D. Allen, Roberto De Propris, Simon P. Driver   +7 more
core   +1 more source

The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage [PDF]

, 2019
We present the first chemical evolution model for Enceladus, alias the Gaia Sausage, to investigate the star formation history of one of the most massive satellites accreted by the Milky Way during a major merger event.
Aguirre, Victor Silva, Calura, Francesco, Cescutti, Gabriele, Matteucci, Francesca, Miglio, Andrea, Spitoni, Emanuele, Vincenzo, Fiorenzo   +6 more
core   +4 more sources

Star Formation Properties in Barred Galaxies(SFB). I. Ultraviolet-to-Infrared Imaging and Spectroscopic Studies of NGC 7479

, 2011
Large-scale bars and minor mergers are important drivers for the secular evolution of galaxies. Based on ground-based optical images and spectra as well as ultraviolet data from the Galaxy Evolution Explorer and infrared data from the Spitzer Space ...
Aguerri, Alongi, Athanassoula, Athanassoula, Athanassoula, Barazza, Bell, Bressan, Calzetti, Calzetti, Calzetti, Chabrier, Chen Cao, Conselice, Conselice, Conselice, de Vaucouleurs, Elmegreen, Eskridge, Fagotto, Fagotto, Fazio, Fazio, Fisher, Fisher, Gadotti, Gadotti, Gadotti, Genzel, Gil de Paz, Helou, Higdon, Ho, Ho, Hong Wu, Hüttemeister, Jogee, Jogee, Kartaltepe, Kennicutt, Kormendy, Kormendy, Laine, Laine, Laine, Lee, Leitherer, Makishima, Marinova, Martin, Martin, Martin, Mazzuca, Meng, Moustakas, Muñoz-Mateos, Pahre, Regan, Reynaud, Rieke, Romano-Díaz, Sandage, Schade, Sellwood, Sellwood, Sheth, Sheth, Shumakova, Skrutskie, Strateva, Wang, Werner, Wu, Wu, Wu, Xian-Min Meng, Zaritsky, Zhi-Min Zhou, Zhu, Zhu, Zurita   +80 more
core   +1 more source

Enhanced Star Formation and Black Hole Accretion Rates in Galaxy Mergers in IllustrisTNG50

The Astrophysical Journal
Many theoretical and observational studies have suggested that galaxy mergers may trigger enhanced star formation or active galactic nucleus activity.
Aimee L. Schechter, Shy Genel, Bryan Terrazas, Julia M. Comerford, Abigail Hartley, Rachel S. Somerville, Rebecca Nevin, Joseph Simon, Erica Nelson   +8 more
doaj   +1 more source

Stellar populations in gas-rich galaxy mergers I. Dependence on star formation history

, 1998
We investigate the nature of stellar populations of major galaxy mergers between late-type spirals considerably abundant in interstellar medium by performing numerical simulations designed to solve both the dynamical and chemical evolution in a self ...
Bekki, Kenji, Shioya, Yasuhiro
core   +1 more source

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source

Galaxy evolution in the post-merger regime. II -- Post-merger quenching peaks within 500 Myr of coalescence

The Open Journal of Astrophysics
Mechanisms for quenching star formation in galaxies remain hotly debated, with galaxy mergers an oft-proposed pathway. In Ellison et al. (2022) we tested this scenario by quantifying the fraction of recently and rapidly quenched post-starbursts (PSBs) in
Sara Ellison, Leonardo Ferreira, Vivienne Wild, Scott Wilkinson, Kate Rowlands, David R. Patton   +5 more
doaj   +1 more source