搜索结果: 1-13 共查到“天体物理学 Determination”相关记录13条 . 查询时间(0.218 秒)
Determination of a magnetization parameter of the parsec-scale AGN jets
Determination magnetization parameter parsec-scale AGN jets
2011/9/27
The observed shift of the core of the relativistic AGN jets as a function of frequency allows us to evaluate the number density of outflowing plasma and, hence, the magnetization parameter. New analys...
Variation in the frequency separations with activity and impact on stellar parameter determination
Variation frequency separations activity impact
2010/11/15
Frequency separations used to infer global properties of stars through asteroseismology can change depending on the strength and at what epoch of the stellar cycle the p-mode frequencies are measured....
On planetary mass determination in the case of super-Earths orbiting active stars. The case of the CoRoT-7 system
CoRoT-7b CoRoT-7c mass determination exoplanets super-Earths
2010/11/12
Context. Due to the great contribution of the star activity in the measured radial velocities, the masses of CoRoT-7b and CoRoT 7c are very uncertain. Therefore, we are dealing with the typical proble...
Abundance determination in HII regions from spectra without the [OII]3727+3729 line
galaxies abundances – ISM abundances – Hii regions
2010/11/11
We suggest an empirical calibration for determination of oxygen and nitrogen abundances and
electron temperature in Hii regions where the [Oii]3727+3729 line (R2) is not available.
The calibration...
The universal red-giant oscillation pattern; an automated determination with CoRoT data
Stars oscillations - Stars interiors - Methods data analysis - Methods analytical
2010/11/12
Aims. The CoRoT and Kepler satellites have provided thousands of red-giant oscillation spectra. The analysis of these spectra requires efficient methods for identifying all eigenmode parameters.Method...
The Determination of the Water Vapor Content in the Pulkovo VKM-100 Multipass Vacuum Cell Using Polymer Sensors of Humidity
Instrumentation and Methods for Astrophysics (astro-ph.IM)
2011/1/7
In spectral studies of water vapor under laboratory conditions (determination of molecular constants, measurement for spectral transmission functions), the amount of water vapor in the time of the mea...
The Laboratory Complex for the Calibration of Photometers Using the Optical Method for Determination of the Water Vapor Content in the Earth Atmosphere
Instrumentation and Methods for Astrophysics (astro-ph.IM)
2011/1/7
We describe the laboratory complex for the calibration of photometers that are used in weather service to measure the water vapor content in the Earth atmosphere.
Determination of 3D Trajectories of Knots in Solar Prominences Using MSDP Data
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
In this paper we present a new method of restoration of the true thee-dimensional trajectories of the prominence knots based on ground-based observations taken with a single telescope, which is equipp...
Possible density determination of the nebular component Of cataclysmic variables with the n iii 4641/4635 line ratio
nebular component n iii 4641 cataclysmic variables 4635 line ratio
2009/6/17
Possible density determination of the nebular component Of cataclysmic variables with the n iii 4641/4635 line ratio。
VISUAL BINARY ORBIT DETERMINATION. ONE POSSIBLE APPROACH
BINARY ORBIT ONE POSSIBLE APPROACH
2009/4/8
VISUAL BINARY ORBIT DETERMINATION. ONE POSSIBLE APPROACH。
EXPERIMENTAL DIFFICULTIES IN DETERMINATION OF THE SPECTRAL LINE SHAPES EMITTED FROM PLASMA
LINE SHAPES PLASMA
2009/4/8
From the plasma radiation and from spectral line profiles it is possible
to obtain many particulars about the plasma conditions. The particulars are,
for example, concentration of the neutral or cha...
DETERMINATION OF METALLICITY OF THE HR7914 SOLAR-LIKE STAR
Stars abundances–Methods observational–Techniques spectroscopic
2009/3/11
By using the Blackwell program package by R.O. Gray, the metallicity
of the HR7914 solar-like star was determined. The program package utilizes
measured equivalent widths of several chosen neutral i...
Investigation of the Effects of Expectation Values for Radii on the Determination of Transition Probabilities using WBEPM Theory
Neutral nitrogen atomic data transition probabilities WBEPM theory
2010/9/15
Transition probabilities for some excited s–p and p–s transition arrays of neutral nitrogen have been calculated using the weakest bound electron potential model theory (WBEPMT) for the investigation ...