搜索结果: 1-13 共查到“星系与宇宙学其他学科 Galaxies”相关记录13条 . 查询时间(0.109 秒)
The standard Friedmann model of cosmology is based on the Copernican Principle, i.e. the assumption of a homogeneous background on which structure forms via perturbations. Homogeneity underpins both g...
To explore the properties of extreme outer stellar disks, we obtained ultra-deep V and GALEX UV images of 4 dwarf irregular galaxies and one Blue Compact Dwarf galaxy and ultra-deep B images of 3 of t...
Formation and Evolution of the Dust in Galaxies. I. The Condensation Efficiencies
ISM - dust Galaxies - Dust Stars - AGB Stars - supernovae
2011/10/13
The growing interest in the high-z universe, where strongly obscured objects are present, has determined an effort to improve the simulations of dust formation and evolution in galaxies. Three main ba...
Two fossil groups of galaxies at z~0.4 in the COSMOS: accelerated stellar-mass build-up, different progenitors
X-rays: galaxies: clusters – galaxies: groups: general – galaxies: evolution – galaxies: luminosity function, mass function
2011/10/12
We report on 2 fossil groups of galaxies at z=0.425 and 0.372 discovered in the Cosmic Evolution Survey (COSMOS) area. Selected as X-ray extended sources, they have total masses (M_200) of 1.9(+/-0.41...
The Evolution of Radio Galaxies and X-ray Point Sources in Coma Cluster Progenitors Since z~1.2
Evolution Radio Galaxies Point Sources Cluster Progenitors Since
2011/9/30
Using Chandra imaging spectroscopy and Very Large Array (VLA) L-band radio maps, we have identified radio sources at P_{1.4GHz} >=5x10^{23} W Hz^{-1} and X-ray point sources (XPSs) at L_{0.3-8keV}>=5x...
Photometric redshift requirements for lens galaxies in galaxy-galaxy lensing analyses
requirements lens galaxies'galaxy-galaxy lensing analyses
2011/9/29
Weak gravitational lensing is a valuable probe of galaxy formation and cosmology. Here we quantify the effects of using photometric redshifts (photo-z) in galaxy-galaxy lensing, for both sources and l...
Current studies of the peculiar velocity flow field in the Local Universe are limited by the lack of detection of galaxies behind the Milky Way. The contribution of the largely unknown mass distributi...
The AMIGA sample of isolated galaxies: VIII. The rate of asymmetric HI profiles in spiral galaxies
galaxies: evolution – galaxies: interactions – galaxies: ISM – surveys – HI : galaxies
2011/9/27
(abridged) Measures of the HI properties of a galaxy are among the most sensitive interaction diagnostic at our disposal. We report here on a study of HI profile asymmetries (e.g., lopsidedness) in a ...
Understanding nlr in seyfert galaxies：numerical simulation of jet-cloud interaction
nlr jet-cloud interaction seyfert galaxies
2009/6/5
Understanding nlr in seyfert galaxies：numerical simulation of jet-cloud interaction。
Narrow-line seyfert 1 galaxies：the [O III] λ5007/Hβ ratio and photoionization models for the nlr
seyfert 1 galaxies photoionization models λ5007/Hβ ratio
2009/6/5
Narrow-line seyfert 1 galaxies：the [O III] λ5007/Hβ ratio and photoionization models for the nlr。
X-ray emission from star forming galaxies。
X-ray observations of superbubbles in dwarf galaxies。
Radio Continuum and Far-infrared Emission from the Galaxies in the Eridanus Group
radio continuum radio–FIR correlation galaxies
2009/5/12
The Eridanus galaxies follow the well-known radio–FIR
correlation. The majority (70%) of these galaxies have their star formation
rates below that of the Milky Way. The galaxies that have a signific...