منابع مشابه
Some Current Issues in Galaxy Formation
I describe recent challenges in hierarchical galaxy formation theory, including the formation of disk galaxies and of ellipticals. Problems with cold dark matter are summarized, and possible solutions are presented. I conclude with a description of the prospects for observing one of the most important ingredients in galaxy formation theory, namely cold dark matter. 1 Challenges of galaxy format...
متن کاملSome Current Issues in Banking
As supervisor of the banks, the Reserve Bank has been likened to the shepherd tending his flock. Keeping the flock intact over the past decade, after the regulatory fences came down, has had its moments. A couple have wandered off, and a couple have lost more than their tails. But no carcasses litter the landscape. Indeed, the flock today is looking stronger and healthier than it has for some t...
متن کاملElliptical Galaxy Dynamics: the Issues Pertaining to Galaxy Formation
How elliptical galaxy dynamics relate to galaxy structure, stellar populations, spiral galaxies and environment are reviewed. The evidence assembled shows that most, if not all, galaxies originally classified as gE contain disks within them. Taken together, the existing evidence are most consistent with the gravitational, hierarchical, clustering, merging (HCM) concept that all galaxies, includ...
متن کاملThe Current Status of Galaxy Formation!
• One of the most important processes for galaxy formation and evolution ! • Big questions! – When and how does star formation occur ?! – How is it related to the evolution of galaxy properties?! – What are the physical processes that drive star formation ?! • star formation occurs (at least in spirals at low z) almost exclusively associated with molecular clouds! – what is the rate at which st...
متن کاملSome Current Issues in Haptics Research
This is a survey of research issues for haptic and locomotion interfaces. A key issue is the workspace and dexterity of haptic devices. In the simulation of real environments, interactive geometric computations on complex models are a fundamental problem. Haptic rendering of forces of contact are increasingly based on measurements on real environments. Scientific visualization is another promis...
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ژورنال
عنوان ژورنال: Publications of The Korean Astronomical Society
سال: 2010
ISSN: 1225-1534
DOI: 10.5303/pkas.2010.25.3.053