搜索结果: 1-15 共查到“理学 Brightness”相关记录18条 . 查询时间(0.055 秒)
Structure of bright 2MASS galaxies: 2D fits to the K-S-band surface brightness profiles
2MASS K-S-band surface brightness profiles
2014/12/24
The unprecedented sky coverage and photometric uniformity of the Two Micron All Sky Survey (2MASS) provides a rich resource for obtaining a detailed understanding of the galaxies populating our local ...
THE "SWARM" MODEL FOR THE AZIMUTHAL BRIGHTNESS VARIATIONS IN SATURN'S RING A
Saturn's rings. Photometry observation ring system The image calibration
2014/12/10
A number of researchers have observed asymmetric azimuthal variations in Saturn's ring A not seen in any other portion of the rings. In order to explore this effect, photometric observations of the ri...
The stellar and gaseous content of massive low surface brightness disk galaxies
Multiple wavelength Subset. Extreme type Galaxy Atomic gas Spiral galaxies
2014/12/9
This dissertation presents a multi-wavelength study of a subset of an extreme type of galaxy, those which have low surface brightnesses large disks, and large amounts of atomic gas, yet which have tot...
The stellar and gaseous content of massive low surface brightness disk galaxies
Multiple wavelength Subset. Extreme type Galaxy Atomic gas Spiral galaxies
2014/12/9
This dissertation presents a multi-wavelength study of a subset of an extreme type of galaxy, those which have low surface brightnesses large disks, and large amounts of atomic gas, yet which have tot...
Brightness and Fluctuation of the Mid-Infrared Sky from AKARI Observations towards the North Ecliptic Pole
Brightness Fluctuation Mid-Infrared Sky AKARI Observations the North Ecliptic Pole
2012/2/21
We present the smoothness of the mid-infrared sky from observations by the Japanese infrared astronomical satellite AKARI. AKARI monitored the north ecliptic pole (NEP) during its cold phase with nine...
The Stability of Low Surface Brightness Disks Based on Multi-Wavelength Modeling
Stability Surface Brightness Disks Based Multi-Wavelength Modeling
2011/10/18
To investigate the structure and composition of the dusty interstellar medium (ISM) of low surface brightness (LSB) disk galaxies, we have used multiwavelength photometry to construct spectral energy ...
High-brightness switchable multi-wavelength remote laser in air
High-brightness switchable multi-wavelength remote laser air
2011/8/5
Abstract: Remote laser in air based on amplified spontaneous emission (ASE) has produced rather well-collimated coherent beams in both backward and forward propagation directions, opening up possibili...
The Faint End of the Luminosity Function and Low Surface Brightness Galaxies
Luminosity Function Low Surface Brightness Galaxies
2011/10/9
SHELS (Smithsonian Hectospec Lensing Survey) is a dense redshift survey covering a 4 square degree region to a limiting R = 20.6. In the construction of the galaxy catalog and in the acquisition of sp...
Context: In addition to the `facular' brightening of active regions, the quiet Sun also contains a small scale magnetic field with associated brightenings in continuum radiation. Aims: To measure the ...
Discontinuity in the Brightness of the Twilight Sky at Different Wavelengths
Discontinuity Brightness of the Twilight Sky at Different Wavelengths
2010/11/15
A search for discontinuity in the sky twilight brightness at different wavelengths and different solar depressions for altitudes 0, 5, 10, 30, 50 & 70 degrees is done. It is found that the logarithmic...
Brightness and color of the integrated starlight at celestial, ecliptic and galactic poles
Brightness color integrated starlight celestial ecliptic galactic poles
2010/11/15
From photoelectric observations of night sky brightness carried out at Abu-Simbel, Asaad et al. (1979) have obtained values of integrated starlight brightness at different Galactic latitudes. These da...
A new scheme for retrieving ocean surface salinity from simulated multi-angular SMOS brightness temperature
SMOS salinity retrieval multi-incidence angle
2009/11/17
The European Space Agency will launch the first salinity satellite for remotely sensing the global soil moisture and ocean salinity (SMOS) at a sun-synchronous orbit in 2009. One of the payloads on th...
Surface-brightness fluctuations in stellar populations
Surface-brightness fluctuations stellar populations
2009/6/30
Surface-brightness fluctuations in stellar populations。
Near-Infrared Surface Brightness Fluctuations as Diagnostics of Unresolved Stellar Populations
Near-Infrared Unresolved Stellar Populations Surface Brightness
2009/6/12
Near-Infrared Surface Brightness Fluctuations as Diagnostics of Unresolved Stellar Populations。
The Mass-Density Profiles of Low Surface Brightness Galaxies
Mass-Density Profiles Low Surface Brightness Galaxies
2009/6/11
The Mass-Density Profiles of Low Surface Brightness Galaxies。