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14 papers · 2 filters
Activity in galactic nuclei of cluster and field galaxies in the local universe
Ho Seong Hwang, Changbom Park, David Elbaz +1
We study the environmental effects on the activity in galactic nuclei by comparing galaxies in clusters and in the field. Using a spectroscopic sample of galaxies in Abell clusters…
Dependence of Barred Galaxy Fraction on Galaxy Properties and Environment
Gwang-Ho Lee, Changbom Park, Myung Gyoon Lee +1
We investigate the dependence of occurrence of bars in galaxies on galaxy properties and environment. We use a volume-limited sample of 33,391 galaxies brighter than $M_{r}=-19.5+5…
Rest-frame UV--Optically Selected Galaxies at 2.3<z<3.5: Searching for Dusty Star-forming and Passively-Evolving Galaxies
Yicheng Guo, Mauro Giavalisco, Paolo Cassata +17
A new set of color selection criteria (VJL) analogous with the BzK method is designed to select both star-forming galaxies (SFGs) and passively-evolving galaxies (PEGs) at 2.3<z<3.…
Models of Stephan's Quintet: Hydrodynamic Constraints on the Group's Evolution
Jeong-Sun Hwang, Curtis Struck, Florent Renaud +1
We present smoothed particle hydrodynamic models of the interactions in the compact galaxy group, Stephan's Quintet. This work is extension of the earlier collisionless N-body simu…
Measures of Galaxy Environment - I. What is "Environment"?
Stuart I. Muldrew, Darren J. Croton, Ramin A. Skibba +19
The influence of a galaxy's environment on its evolution has been studied and compared extensively in the literature, although differing techniques are often used to define environ…
Mass assembly of galaxies: Smooth accretion versus mergers
Benjamin L'Huillier, Francoise Combes, Benoit Semelin
Galaxies accrete their mass by means of both smooth accretion from the cosmic web, and the mergers of smaller entities. We wish to quantify the respective role of these two modes o…