Results 91 to 100 of about 52,179 (329)

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

Formation of a Spiral Galaxy in a Major Merger [PDF]

The Astrophysical Journal, 2005
submitted to ApJL, 4 ...
Springel, Volker, Hernquist, Lars
openaire   +4 more sources

Leading Regenerative Transformation: Cognitive Frame Characteristics Shaping Leaders' Approaches to Organizational Development

Business Strategy and the Environment, EarlyView.
ABSTRACT As the urgency to address global crises such as climate change and inequality intensifies, the concept of regenerative development has emerged as a transformative approach going beyond sustainability to actively restore and enhance both ecological and social systems.
Leonie Paul, Juha Väätänen, Hardik Bhimani, Anne‐Laure Mention   +3 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

Cosmo-Paleontology: Statistics of Fossil Groups in a Gravity-Only Simulation

The Open Journal of Astrophysics, 2022
We present a detailed study of fossil group candidates identified in "Last Journey", a gravity-only cosmological simulation covering a $(3.4\, h^{-1}\mathrm{Gpc})^3$ volume with a particle mass resolution of $m_p \approx 2.7 \times 10^9\, h^{-1}\mathrm{M}
Aurora Cossairt, Michael Buehlmann, Eve Kovacs, Xin Liu, Salman Habib, Katrin Heitmann   +5 more
doaj   +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

Sersic properties of disc galaxy mergers [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
Sersic parameters characterising the density profiles of remnants formed in collision-less disc galaxy mergers are obtained; no bulge is included in our simulations. For the luminous component we find that the Sersic index is n ~ (1.5,5.3) with ~ 3 +/- 1 and an effective radius of R_e ~ (1.6,12.9) kpc with ~ 5 +/- 3 kpc.
Hector Aceves, Héctor Velázquez, Fidel Cruz   +2 more
openaire   +3 more sources

LGBTQ+ Affirmative Care Training in Counselor Education: A Community‐Based Inquiry

Counselor Education and Supervision, EarlyView.
ABSTRACT Counselor educators, counselors‐in‐training, and LGBTQ+ community members engaged in a community‐based qualitative inquiry exploring LGBTQ+ affirmative care education. Findings revealed counselor educators’ components and delivery of content, developmental implications for applying LGBTQ+ affirmative care, and gaps between education and LGBTQ+
Nancy E. Thacker Darrow, Kamden K. Strunk, Thea L. Racelis   +2 more
wiley   +1 more source

Powerful Radio-loud Quasars Are Triggered by Galaxy Mergers in the Cosmic Bright Ages

The Astrophysical Journal
While supermassive black holes are ubiquitous features of galactic nuclei, only a small minority are observed during episodes of luminous accretion. The physical mechanism(s) driving the onset of fueling and ignition in these active galactic nuclei (AGN)
Peter Breiding, Marco Chiaberge, Erini Lambrides, Eileen T. Meyer, S. P. Willner, Bryan Hilbert, Martin Haas, George Miley, Eric S. Perlman, Peter Barthel, Christopher P. O’Dea, Alessandro Capetti, Belinda Wilkes, Stefi A. Baum, Duccio F. Macchetto, William Sparks, Grant Tremblay, Colin Norman   +17 more
doaj   +1 more source