搜索结果: 151-165 共查到“理学 Galaxies”相关记录492条 . 查询时间(0.026 秒)
Extinction law in ultraluminous infrared galaxies at z ~ 1
dust, extinction — galaxies: evolution — galaxies: ISM — galaxies: starburst — infrared: galaxies — supernovae: general
2011/10/17
We analyze the multi-wavelength photometric and spectroscopic data of 12 ultraluminous infrared galaxies (ULIRGs) at z ~ 1 and compare them with models of stars and dust in order to study the extincti...
Galaxy Zoo: Dust lane early-type galaxies are tracers of recent, gas-rich minor mergers
galaxies: evolution — galaxies: interactions — galaxies: active — galax-ies: elliptical and lenticular
2011/10/17
We present the second of two papers concerning the origin and evolution of local early-type galaxies exhibiting dust features. We use optical and radio data to examine the nature of AGN activity in th...
Galaxy Zoo: Dust and molecular gas in early-type galaxies with prominent dust lanes
galaxies: ISM - galaxies: elliptical and lenticular cD - galaxies: peculiar galaxies: interactions - galaxies: formation - galaxies: evolution
2011/10/17
We study dust and associated molecular gas in 352 nearby early-type galaxies (ETGs) with prominent dust lanes. 65% of these 'dusty ETGs' (D-ETGs) are morphologically disturbed, suggesting a merger ori...
Spectroscopy of Luminous Compact Blue Galaxies in Distant Clusters I. Spectroscopic Data
Spectroscopy of Luminous Compact Blue Galaxies in Distant Clusters I. Spectroscopic Data
2011/10/17
We used the DEIMOS spectrograph on the Keck II Telescope to obtain spectra of galaxies in the fields of five distant, rich galaxy clusters over the redshift range 0.5 < z < 0.9 in a search for luminou...
Extreme Emission Line Galaxies in CANDELS: Broad-Band Selected, Star-Bursting Dwarf Galaxies at z>1
Extreme Emission Galaxies CANDELS: Broad-Band Selected Star-Bursting Dwarf Galaxies
2011/10/17
We identify an abundant population of extreme emission line galaxies (EELGs) at redshift z~1.7 in the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS) imaging from Hubble Space Teles...
Very Long Baseline Array Imaging of Parsec-scale Jet Structures in Radio-loud Narrow-line Seyfert 1 Galaxies
Long Baseline Array Imaging Radio-loud Narrow-line Seyfert
2011/10/21
We conducted very long baseline interferometry (VLBI) observations of five radio-loud narrow-line Seyfert 1 (NLS1) galaxies in milliarcsecond resolutions at 1.7 GHz (18 cm) using the Very Long Baselin...
Dust grain growth in the interstellar medium of galaxies at redshifts 4
Dust grain growth interstellar medium galaxies redshifts
2011/10/21
To discriminate between different dust formation processes is a key issue in order to understand its properties. We analysed six submillimeter galaxies at redshifts 4 and nine quasars at 5
Narrow-line Seyfert 1 galaxies: an amasing class of AGN
Masers – Galaxies: active – Galaxies: nuclei – Galaxies: Seyfert – Radio lines: galaxies
2011/10/21
Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that have all the properties of type 1 Seyfert galaxies but show peculiar characteristics, including the narrowest Bal...
The ATLAS3D Project-- VIII: Modelling the Formation and Evolution of Fast and Slow Rotator Early-Type Galaxies within $Λ$CDM
galaxies elliptical and lenticular cD – galaxies formation – galaxies evolution – galaxies structure
2011/10/21
We propose a simple model for the origin of fast and slow rotator early-type galaxies (ETG) within the hierarchical $\Lambda$CDM scenario, that is based on the assumption that the mass fraction of ste...
Nuclear Rings in Galaxies---A Kinematic Perspective
Nuclear Rings Galaxies---A Kinematic Perspective
2011/10/19
We combine DensePak integral field unit and TAURUS Fabry-Perot observations of 13 nuclear rings to show an interconnection between the kinematic properties of the rings and their resonant origin. The ...
Using HST observations of 147 host galaxies of low-mass black holes (BHs), we systematically study the structures and scaling relations of these active galaxies. Our sample is selected to have central...
Velocity Dispersions and Stellar Populations of the Most Compact and Massive Early-Type Galaxies at Redshift ~1
Velocity Dispersions Stellar Populations Most Compact Massive Early-Type Galaxies
2011/10/13
We present Gran-Telescopio-Canarias/OSIRIS optical spectra of 4 of the most compact and massive early-type galaxies in the Groth Strip Survey at redshift z~1, with effective radii Reff=0.5-2.4 kpc and...
Formation and Evolution of the Dust in Galaxies. III. The Disk of the Milky Way
Galaxies - Dust Galaxies – Spirals Galaxies – Milky Way
2011/10/13
Models of chemical evolution of galaxies including the dust are nowadays required to decipher the high-z universe. In a series of three papers we have tackled the problem and set a modern chemical evo...
Formation and Evolution of the Dust in Galaxies. II. The Solar Neighbourhood
Galaxies - Dust Galaxies – Spirals Galaxies – Milky Way
2011/10/13
Over the past decade a new generation of chemical models have included the dust in the treatment of the ISM. This major accomplishment has been spurred by the growing amounts of data on the highly obs...
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...